informatica dumps 9.1

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Informatica Certification Questions/Dump

Mapplet definition

Refer to the mapping illustrated below. Assume that the mapplet definition is valid and that the individual

transformation expressions are valid. Select the statement that is correct.

Choose Answer

(A)The mapping will be valid as it is.

(B)

The mapping is valid because the third mapplet output group, Update Changes, does not have any output

ports connected to a transformation or Target definition.

(C)

The mapping is invalid because you cannot concatenate two or more data flow paths together into one

mapplet input group.

(D)

The mapplet is invalid because the number of output ports in each output group does not match.

Input transformation in mapplet

Select the statement below that is true.

Choose Answer

(A)

A mapplet that does not contain an Input transformation is always an active mapplet.

(B)

A mapplet that does not contain an Input transformation is an active mapplet only if it contains at least

one active transformation.

(C)

A passive mapplet can be made into an active mapplet by adding one or more Joiner transformations to

the mapplet.

(D)

A passive mapplet can be made into an active mapplet by adding one or more Lookup transformations to

the mapplet.

Output transformations in a mapplet

How many Output transformations can be placed in a mapplet?

Choose Answer

(A)

One

(B)

One or more

(C)

One or more unless there is at least one Target definition in the mapplet, in which case zero Output

transformations are permitted.

(D)

Any number

Homogeneous Source Definitions

How many homogeneous Source Definitions can be placed in a Mapplet?


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Choose Answer

(A)

One

(B)

One for each Source Qualifier transformation.

(C)Zero to one if the mapplet does not contain an Input or ERP Source Qualifier transformation.

(D)

Unlimited

Difference between the Router and Filter transformations

A major difference between the Router and Filter transformations is that filtered rows can be captured in

the Router. (T/F)

Choose Answer

(A)

True

(B)

False

Filter transformation

A Filter transformation contains the following condition: ITEM_COST > 100.00. The value for

ITEM_COST for a specific row is 35. What will happen to that row?

Choose Answer

(A)

It is dropped from the mapping flow.

(B)

It is dropped from the mapping flow and written to the appropriate reject (bad) file.

(C)

It is dropped from the mapping flow and written to the appropriate reject (bad) file if the Filter property

"Forward Filtered Rows" is set to True.

(D)

If the Filter property "Forward Filtered Rows" is set to True, the row is sent to downstream

transformations, if any, but not written to the target table.

Router transformation that has three groups defined

Specify which statement below best describes the behavior of a Router transformation that has three

groups defined.

Choose Answer

(A)

The condition for each group will be evaluated for each row, and the first group that evaluates to a "true"

result will pass the row out of the transformation through that group's output ports. If no group evaluates

to a "true" result, the row will pass out of the transformation through the Default group output ports.

(B)

The condition for each group will be evaluated for each row, and each group that evaluates to a "true"




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each row as insert, delete or reject. It is desired to count ALL rows that pass through the Aggregator,

regardless of how they are tagged. Assume that the other parts of the mapping are finished and that the

Update Strategy transformation property Forward Rejected Rows is set to True. Select the statement that

is true.

Choose Answer

(A)

The mapping will work as desired without any further changes.

(B)

The mapping will work as desired only if the Aggregator transformation is moved to be upstream of the

Update Strategy transformation.

(C)

The mapping will work as desired only if it is redesigned to use a Router transformation in place of the

Update Strategy transformation, and the row operation for each row (insert, delete, or reject) is set by an

individual Update Strategy transformation for each flow, and then counted by an individual Aggregator

transformation for each flow.

(D)

The mapping will work as desired only if the Update Strategy transformation tags each row only as insert

or delete (no rows tagged as reject). Any rows that are not desired in the target table can then be

removed from the flow by adding a Filter transformation DOWNSTREAM of the Aggregator

transformation, and setting the Filter condition to be logically equivalent to the condition that was used in

the Update Strategy transformation to tag the rows as reject.

"Treat source rows as" session property

A user sets the "Treat source rows as" session property to "Update". What is the effect of making this

selection?

Choose Answer

(A)

All records processed by the session will be treated as update statements on the target table(s).

(B)

All records processed by the session will be treated as update statements on the target table(s), provided

that a primary key constraint exists on the corresponding target table definition(s).

(C)

This selection allows the use of the Update Strategy transformation, provided that one or more Update

Strategy transformations are present in the mapping run by the session.

(D)


Strategy transformations are present in the mapping run by the session, and provided that a primary key

constraint exists on the corresponding target table definition(s).

Case-sensitive string comparison

Can the Joiner transformation perform a case-sensitive string comparison as part of the join condition?

Choose Answer

(A)


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Yes, always

(B)

No, the comparison is never case sensitive.

(C)

Yes when the Informatica server is running on the Unix operating system, no when it is running on a

Windows operating system.(D)

Yes, when the database that is being used for the join supports case-sensitive string comparisons.

Full outer join

A developer is using a Joiner transformation to join two data streams (sources), and a full outer join is

desired. Select the statement below that is true.

Choose Answer

(A)

A Joiner transformations may perform a full outer join under all conditions.

(B)

A Joiner transformation may perform a full outer join only when one or more sides of the join are from a

relational database.

(C)

A Joiner transformation may perform a full outer join only when all sides of the join or iginate from

relational databases, and one or more of those databases support outer joins.

(D)

A Joiner transformation may perform a full outer join only when no file sources are involved in the join

(both sides are relational).

3 or more data sources connected to a Joiner

Choose Answer

(A)

The mapping is valid as it is.

(B)

The mapping is invalid because there is an active transformation between SQ_ITEMS and the Joiner

transformation. If the Aggregator transformation was eliminated or replaced with a passive transformation,

the mapping would be valid.

(C)

The mapping is valid only if the SQ_ITEMS side of the join is designated as the master side in the Joiner

transformation.

(D)

The mapping is invalid because it is not permitted to have three or more data sources connected to a

Joiner transformation under any circumstances.

Joiner

Refer to the diagram below, which shows part of a mapping. Assume that each individual transformation

and transformation expression in the mapping is valid, and that the part of the mapping that is not visible

(downstream of the Joiner) is valid. Select the statement that is true.


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Choose Answer

(A)


(B)

The mapping is invalid because a Joiner transformation must be the first transformation after the Source

Qualifier, and in this mapping there are two transformations between SQ_ITEMS and the Joinertransformation.

(C)

The mapping will be valid only if the SQ_ITEMS side of the join is designated as the detail side in the

Joiner transformation.

(D)

The mapping will be valid only if the SQ_ITEMS side of the join is designated as the master side in the



and transformation expression is valid. Select the statement that is true.Joiner transformations

It is desired to join together a database table, a flat file and an XML file. All three sources have a single

common field called CUSTOMER_ID. What is the minimum number of Joiner transformations that are

needed to join these sources?

Choose Answer

(A)

One

(B)

Two

(C)Three

(D)

One if the flat file and the XML file are located in the same directory, two if they are located in different

directories.

Set a Lookup condition

A developer is attempting to set a Lookup condition and finds that the New Condition button is disabled,

making it impossible to set a condition. Assume that it is a connected Lookup. What is a possible reason

for this?

Choose Answer

(A)

There are no designated Lookup ports in the ports tab section.

(B)

There are no designated Input ports in the ports tab section.

(C)

There are no ports with compatible data types.


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(D)

At least one Output port has not been connected to another transformation.

Override the SQL of a non-shared, uncached Lookup transformation

It is desired to override the SQL of a non-shared, uncached Lookup transformation in order to add aWHERE clause. Select the action below that MUST be taken to allow the session to run as designed.

Assume that the session has already been tested prior to the override and it is satisfactory.

Choose Answer

(A)

Cache the Lookup

(B)

Include an ORDER BY clause in the SQL that sorts the lookup field(s) in descending order.

(C)

Generate a default query after the override SQL has been entered.

(D)

Validate the override SQL on the actual database table.

Lookup transformation where cache is persistent

Select the Lookup transformation scenario below which is not supported. Assume that the Lookup cache

is persistent, it is shared and named, and there is only one Lookup transformation used in the mapping or

mapplet.

Choose Answer

(A)

Static cacheCondition: sales_amt > sales_amt1Unconnected

(B)

Static cacheCondition: sales_amt = sales_amt1 Unconnected

(C)

Dynamic cacheCondition: sales_amt > sales_amt1Connected

(D)

Dynamic cacheCondition: sales_amt = sales_amt1Connected

Dynamic lookup cache

Select the statement below that most accurately describes how a dynamic lookup cache is designed to

function.

Choose Answer


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(A)

The Informatica server compares the target data to the cache data as each row is passed to the target

and updates the cache as required.

(B)

The Informatica server inserts rows into the cache or updates rows in the cache as it passes rows to the

target.

(C)

The Informatica server updates the cache as the target table data changes.

(D)

The Informatica server inserts, updates or deletes rows in the cache as it passes rows to the target.

Source Type Lookup transformation

What type of data sources are supported in the Source Type Lookup transformation property?

Choose Answer

(A)

Database

(B)

Database and flat file

(C)

Database, flat file, and COBOL file

(D)

Database, flat file, COBOL file, and XML file

Unconnected Lookup transformation

What is one disadvantage of using an unconnected (sometimes called function mode) Lookup

transformation?

Choose Answer

(A)

If there is no match in the Lookup condition, the Informatica server returns a transformation error.

(B)

A reusable unconnected Lookup can not have more than one instance in a mapping.

(C)

An unconnected Lookup transformation does not support user-defined default values.


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(D)

An unconnected Lookup transformation does not support a static lookup cache.

NEXTVAL port of a Sequence Generator

Can the NEXTVAL port of a Sequence Generator transformation be connected to the PRIMARY KEY

column of two different target table definitions in a mapping? Assume that the two definitions represent

different physical tables on the database server.

Choose Answer

(A)

Yes, always.

(B)

Yes, but only if the two tables share a primary - foreign key (referential integrity) relationship.

(C)

No, because the Sequence Generator produces unique values (within the selected range) and this would

result in a unique constraint error (duplicate key values) in one or both of the tables.

(D)

No, this is not allowed in the Mapping Designer.

Sequence Generator transformation

What is the difference between the NEXTVAL and the CURRVAL ports of the Sequence Generator

transformation? Assume that they are both connected to the input ports of another transformation.

Choose Answer

(A)

The Informatica server generates a sequence of numbers for NEXTVAL, and CURRVAL is set to

NEXTVAL plus one.

(B)


NEXTVAL minus one.

(C)

The Informatica server generates a sequence of numbers for CURVALL, and NEXTVAL is set to

CURRVAL plus one.

(D)


CURRVAL plus the integer value set for the "Increment By" Sequence Generator property.


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Active transformations

Why is the sorter transformation considered an active transformation?

Choose Answer

(A)

When the Case Sensitive property is set to true (checked), rows that do not meet the case criteria in the

sort may be discarded.

(B)

When more than one sort key is selected, nested sorts may result in a single input row being outputted

more than one time within multiple sort sequences.

(C)

When the Distinct Output Rows property is set to true (checked), duplicate rows are discarded.

(D)

When the sort direction properties are not the same for all sort keys (not all ascending or all descending),

a single input row may be outputted more than one time.

Sort a very large data set

When using the sorter transformation to sort a very large data set, additional RAM resources may be

required to accommodate the data. Which machine would provide this RAM?

Choose Answer

(A)

The Informatica server machine.

(B)

The source database server machine.

(C)

The target database server machine.

(D)

The source database server machine when reading from a relational source, or the target database

server machine when reading from a flat file, COBOL or XML source.


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(A)

The session would fail when the Aggregator begins processing data.

(B)

The session would fail when the data RAM cache exceeds 2 Mbytes.

(C)

The Informatica server would automatically expand the data RAM cache to accommodate the additional

data (provided the RAM is available on the machine).

(D)

The Informatica server would automatically page the data to a file on the local disk.

Aggregator data cache size.

An Aggregator transformation will process 50 million rows per session, and the width of each row is 3

KBytes. There are two group-by ports, MONTH and CUSTOMER. Assuming that the data set contains

two years worth of data, and that there are 500 customers who are represented for each month in the

data set, estimate the required data cache size.

Choose Answer

(A)

6 MBytes

(B)

12 MBytes

(C)

18 MBytes

(D)

36 MBytes

Aggregate cache

The aggregate cache always consists of

Choose Answer

(A)

An index and data cache in RAM, and an index and data file on the local disk.

(B)

An index and data cache in RAM, and an index and data cache on the local disk if the RAM caches

cannot contain all of the intermediate results in the data set.


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(C)

An index and data cache in RAM, and an index and data file on the local disk if the file names and

directory (or Server Variable) have been specified as an Aggregator property.

(D)

An index and data cache in RAM, and an index and data file on the local disk if the Incremental

Aggregation property has been set to true when the session runs.

Sorted Input in Aggregator transformation

An Aggregator transformation has two group-by ports: CUSTOMER_ID and ORDER_DATE, in that order.

The Sorted Input property is set to true. The Order By clause in the SQL for the Source Qualifier contains

this syntax: ORDER BY CUSTOMER_ID, ORDER_DATE, MANF_ID. Assuming that the sort order on the

database server matches the sort order of the session and everything else is valid, what would happen

when this session started?

Choose Answer

(A)

The session would run normally.

(B)

The session would fail, because the columns in the ORDER BY clause in the SQL do not exactly match

the group-by ports in the Aggregator transformation.

(C)

The session would fail, because when the Sorted Input property is set to true, no more than one group-by

port is allowed.

(D)

The session would run, but sorted data would not be used because the columns in the ORDER BY clause

in the SQL does not exactly match the group-by ports in the Aggregator transformation, and this may

adversely affect performance.

Aggregator transformation variable port

What type of expressions can be used in an Aggregator transformation variable port?

Choose Answer

(A)

Aggregate or non-aggregate expressions, provided they are not used together in a single variable port.

(B)

Aggregate and non-aggregate expressions, together in the same variable port.


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(C)

Aggregate, non-aggregate and conditional expressions, together in the same variable port, provided that

the variable port is also made a "group-by" port.

(D)

Non-aggregate and conditional expressions only.

Aggregator transformation

What type of expressions can be used in an Aggregator transformation output port?

Choose Answer

(A)

Aggregate or non-aggregate expressions, provided they are not used together in a single output port.

(B)

Aggregate and non-aggregate expressions, together in the same output port.

(C)

Aggregate, non-aggregate and conditional expressions, together in the same output port.

(D)

Aggregate only.

Outer join

Can a Source Qualifier be used to perform an outer join when joining two database tables?

Choose Answer

(A)

Yes, but it requires that the user modify the join SQL by hand.

(B)

Yes, but it requires that the user select left or right outer join as the Source Qualifier Join Type property.

(C)

No, because this may produce null values in ports and the Source Qualifier does not support default

values.

(D)

No, this function is not supported by the Source Qualifier- a Joiner transformation would need to be used.


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Join two relational sources

A user desires to join two relational sources with a single Source Qualifier. The sources and the Source

Qualifier have been correctly imported into the mapping. Next, she must establish a primary / foreign key

relationship between two ports in the source definitions. Assuming that the relationship does not currently

exist on the database server, what are the required steps to do this?

Choose Answer

(A)

Use the Source Analyzer to establish the primary / foreign key relationship and save the repository.

(B)

Use the Source Analyzer to establish the primary / foreign key relationship, save the repository, and run

the appropriate SQL statement on the database tables to create the actual primary / foreign key

relationship.

(C)

Use the Source Analyzer to establish the primary / foreign key relationship, open the SQL Editor in the

Source Qualifier and generate the join statement, modify the join statement if required, and save the

repository.

(D)

Use the Source Analyzer to establish the primary / foreign key relationship, regenerate the Source

Qualifier SQL using the SQL Editor, press the Okay button, and save the repository.

Data source(s)

What type of data source(s) can be read with the Source Qualifier transformation?

Choose Answer

(A)

Relational databases

(B)

Relational databases and flat files

(C)

Relational databases, flat files and Cobol

(D)

Relational databases, flat files, Cobol and certified ERP sources such a Peoplesoft and SAP/R3.

Override the default Source Qualifier join

Under what circumstances should a user override the default Source Qualifier join?


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Choose Answer

(A)

The datatypes of the columns used in the join condition do not match.

(B)

The Source Qualifier is being used to join two tables located on different database servers (a

heterogeneous join).

(C)

The Source Qualifier is being used to join two or more flat files.

(D)

The order of the Source Qualifier ports has been changed since the mapping was first saved.

Generate a default query

A user finds that she is unable to generate a default query in the Source Qualifier SQL Editor. What is a

possible reason for that?

Choose Answer

(A)

The datatypes in the Source Qualifier do not match the corresponding datatypes in the source

definition(s) for each field and port.

(B)

The Source Qualifier does not have one or more ports connected to another transformation or target in

the mapping.

(C)

The Source Qualifier property "Allow default query" is unchecked (set to false).

(D)

The Source Qualifier is not connected to the source database.

Alter the datatypes in the Source Qualifier

Under what circumstances is it desirable to alter the datatypes in the Source Qualifier?

Choose Answer

(A)

When the precision required by the mapping is less than the precision of the data stored in the table or

flat file being read by the Source Qualifier.


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(B)

When the precision required by the mapping is greater than the precision of the data stored in the table or


(C)

To alter the way the source database binds data when it is imported into the mapping.

(D)

Never. The datatypes in the Source Qualifier and the corresponding source(s) must match.

Informatica expression reserved word

Can a port in an Expression transformation be given the name DISTINCT ?

Choose Answer

(A)

Yes

(B)

No, because DISTINCT is an ANSI SQL reserved word.

(C)

No, because DISTINCT is an Informatica expression reserved word.

(D)

No, because DISTINCT is both an ANSI SQL and an Informatica expression reserved word.

Informatica Test functions

The following are valid Informatica Test functions:

Choose Answer

(A)

ISNULL, IS_DATE, IS_NUMBER, IS_SPACES

(B)

ISNOTNULL, ISDATE, ISHERE

(C)

IS NULL, ISANUMBER, ISADATE, ISADECIMAL

(D)

NO_DOUBT, IS_LIVE, ISILDOR, ISENGARD


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Interpreting expression

A user enters the following expression into an Expression transformation:( PRICE - COST ) QUANTITY.

The Expression transformation is part of a mapping with a relational database source definition.

Assuming that the expression is valid, when the mapping runs as part of a session, how will the

Informatica server treat the above expression?

Choose Answer

(A)

It will interpret the expression directly.

(B)

It will embed the expression into the designated source code file for the session and then compile it so

that it can be executed.

(C)

It will include the statement in the SQL select statement that will be submitted to the source database.

(D)

It will embed the expression into the primary session stored procedure script that will be executed on

either the source database or another database that was specified by the user.

LTRIM

For a row where the value of the port LAST_NAME is equal to the string 'Damato' what would be the

return value of the expression LTRIM ( LAST_NAME, 'A' )?

Choose Answer

(A)

Dmato

(B)

Dmto

(C)

amato

(D)

Damato

Mapping validity

Which situation would always cause a mapping to be invalid?

Choose Answer


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(A)

A target definition with no data flowing into it

(B)

Two ports with different data types connected together

(C)

Two active transformations connected to the same transformation

(D)

A Source Qualifier with port names that do not match a field name in the corresponding Source definition.

Data types

A developer wishes to connect two ports that have different data types. Is this allowed?

Choose Answer

(A)

Yes, always

(B)

Yes, provided that the data types are compatible. The Informatica server will automatically convert the

original type to match the destination type.

(C)

Yes, provided that the data types are compatible, and the developer writes a valid conversion function to

convert the original type to match the destination type.

(D)

No, never.

Working with Expressions

A transformation has the following ports: Port_1: String, Input port; Port_2: String, Input port; Port_3:

String, Output port. Which of the expressions shown below would be valid? Assume that it is associated

with Port_3 and that the string ENDSTRING is not a parameter or mapping variable.

Choose Answer

(A)

Port_1 Port_2 'ENDSTRING'

(B)

Port_1 Port_2 "ENDSTRING"

(C)

Port_1 Port_2 ENDSTRING


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(D)

CONCAT(Port_1, CONCAT(Port_2, "ENDSTRING"))

Posted by ghostrider30 at 12:16 PM 0 comments

Transformation expressions

A transformation has the following ports: Port_1: Decimal, Input port; Port_2: Decimal, Input port; Port_3:

String, Input port; Port_4: Decimal, Output port; Port_5: Decimal, Output port. Which of the expressions

shown below would be invalid? Assume it is associated with Port_4.

Choose Answer

(A)

IIF ( Port_1 > 5, Port_2 10, Port_2 15 )

(B)

IIF ( Port_1 > 5, Port_1 10 )

(C)


(D)


Session Task

Whether or not a Session Task can be considered to have heterogeneous targets is determined by

Choose Answer

(A)

The Mapping properties alone.

(B)

The Session Task properties alone.

(C)

Either the Mapping properties or the Session Task properties.

(D)

Either the Mapping properties or the Workflow properties.

Editing Target definition

Under what circumstances can a Target definition be edited from the Mapping Designer, within the

mapping where that Target definition is being used?

Choose Answer


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(A)

When the Target definition is not shared (not a shortcut).

(B)

When the Target definition is not shared (not a shortcut) and when the user has write permission on the

folder where the mapping is stored.

(C)

Always

(D)

Neve

Target definitions

What types of Target definitions are supported in a mapping?

Choose Answer

(A)

Relational

(B)

Relational and XML

(C)

Relational, XML and flat file

(D)

Relational, XML, flat file and COBOL

Flat File Wizard

A developer has used the Flat File Wizard to create a fixed-width flat file source definition. This source

definition is used in several mappings. The next day, she discovers that the actual flat file that will be

accessed by the Informatica server will be comma delimited. What action, if any, should be taken?

Choose Answer

(A)

No action need be taken provided the new file format is valid.

(B)

Edit the Source definition properties to make them correct and save the changes to the repository.

(C)

Launch the Flat File Wizard using the Source definition and edit the properties to make them correct.

Save the changes to the repository.

(D)

Delete the Source definition, save the repository, re-import it using the Flat File Wizard and define the

properties to make them correct. Add the new Source definition to the affected mappings and save the


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changes to the repository.


Primary and foreign key relationship

Can a developer manually define a primary and foreign key relationship between two columns in two

different relational Source definitions?

Choose Answer

(A)

Yes, always.

(B)

Yes, provided that the data types and precision matches between the two columns.

(C)

Yes, provided that the data types and precision matches between the two columns and the relationship

exists on the physical database tables when the session runs.

(D)

Yes, provided that the data types and precision matches between the two columns. The relationship can

be set between the Source definitions regardless of whether the relationship exists on the physical

database tables, but if the relationship does not exist in the database, the session may fail if referential

integrity is faulty.

Tasks on a port level

Which tasks can be performed on a port level (using one specific port)?

Choose Answer

(A)

Enter expressions, define port variables, override default values

(B)

Enter expressions, define port and Mapping variables, override default values

(C)

Define local and Mapping variables, define parameters, override default values

(D)

Enter expressions, define port and Mapping variables, define parameters


Supported transformation ports

What types of transformation ports are supported?

Choose Answer


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(A)

Input, Output, Variable

(B)

Input, Output, Input / Output, Variable

(C)

Input, Output, Variable, Aggregate

(D)

Input, Output, Input / Output, Variable, Parameter

link a port

A user is attempting to link a port on the left to another port in a different transformation on the right. The

Designer will not establish the connector link (blue arrow). What are the possible reasons for this?

Choose Answer

(A)

Link columns mode not set, or left port not an output port

(B)

Link columns mode not set, or left port not an output port, or data type mismatch

(C)

Link columns mode not set, or left port not an input port, or right port not an output port, or data type

mismatch

(D)

Link columns mode not set, or left port not an output port, or right port not an input port, or data type

mismatch

Copy a Source Definition from a shared folder to a non-shared folder

A user desires to copy a Source Definition from a shared folder to a non-shared folder. Assuming that the

user has write permission on the non-shared folder, what must be done in order for this operation to work

as intended?

Choose Answer

(A)

The Source Analyzer must be active and the non-shared folder must be open.

(B)

The Source Analyzer must be active, the non-shared folder must be open, and the user must hold down

the Ctrl key while dragging.

(C)

The Source Analyzer must be active and the shared folder must be open.


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(D)

The Source Analyzer must be active, the shared folder must be open, and the user must hold down the

Ctrl key while dragging.

Designer option cannot be set locally

Specify which Designer option cannot be set locally (differently for each client machine).

Choose Answer

(A)

Whether to display column names or business names for all Source Qualifiers

(B)

Whether to import primary keys when importing a target definition

(C)

Whether to import data type lengths and precisions for Source Definitions

(D)

Whether to display targets grouped by database in the Navigator Window


"Find" search tool

The Designer includes a "Find" search tool as part of the standard toolbar. What can it be used to find?

Choose Answer

(A)

Column or port names in any transformation, source or target definition

(B)

Column or port names in any transformation, source or target definition, and strings in any of the output

windows

(C)

Column or port names in any transformation, source or target definition, strings in any of the output

windows, and expressions in any transformation

(D)


windows, expressions in any transformation, and descriptive text

Mapplet definition



Choose Answer

(A)

The mapping will be valid as it is.

(B)


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(C)



(D)




Choose Answer

(A)


(B)



(C)


the mapplet.

(D)


the mapplet.



Choose Answer

(A)

One

(B)

One or more

(C)

One or more unless there is at least one Target definition in the mapplet, in which case zero Output

transformations are permitted.

(D)

Any number

Homogeneous Source Definitions

How many homogeneous Source Definitions can be placed in a Mapplet?

Choose Answer

(A)

One

(B)

One for each Source Qualifier transformation.

(C)

Zero to one if the mapplet does not contain an Input or ERP Source Qualifier transformation.


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to a "true" result, the row will pass out of the transformation through the Default group output ports only if

those ports are connected to another transformation.

Update Strategy transformation

It is desired to run a session where every row that is processed by the session updates the target table

based on the primary key value. Assume that the target table definition has a primary key, and all other

session and mapping properties are left to their defaults. Select the statement below that is true.

Choose Answer

(A)

The only action that is necessary is to set the Treat Source Rows As session property to Update.

(B)

At least one Update Strategy transformation must be present in the mapping, and the update expression

condition must be written to be true for all rows that are desired to update the target table.

(C)


condition must be written to be true for all rows that are desired to update the target table, and the Treat

Source Rows As session property must be set to Update.

(D)



Source Rows As session property must be set to Data Driven.

Expressions used in an Update Strategy

What type of expressions can be used in an Update Strategy transformation?

Choose Answer

(A)

Immediate If ( IIF)

(B)

Immediate If (IIF) or DECODE

(C)

Immediate If (IIF), DECODE, or IF THEN ELSE

(D)

Any valid non-aggregate expression that is supported by the transformation language.

Forward Rejected Rows in Update Strategy

Refer to the diagram below. The Update Strategy transformation contains an expression that may tag




is true.

Choose Answer

(A)



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(B)



(C)





(D)








selection?

Choose Answer

(A)


(B)



(C)


Strategy transformations are present in the mapping run by the session.

(D)


Strategy transformations are present in the mapping run by the session, and provided that a primary key

constraint exists on the corresponding target table definition(s).

Case-sensitive string comparison

Can the Joiner transformation perform a case-sensitive string comparison as part of the join condition?

Choose Answer

(A)

Yes, always

(B)

No, the comparison is never case sensitive.

(C)

Yes when the Informatica server is running on the Unix operating system, no when it is running on a

Windows operating system.

(D)

Yes, when the database that is being used for the join supports case-sensitive string comparisons.


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Full outer join

A developer is using a Joiner transformation to join two data streams (sources), and a full outer join is

desired. Select the statement below that is true.

Choose Answer

(A)

A Joiner transformations may perform a full outer join under all conditions.

(B)

A Joiner transformation may perform a full outer join only when one or more sides of the join are from a

relational database.

(C)

A Joiner transformation may perform a full outer join only when all sides of the join originate from

relational databases, and one or more of those databases support outer joins.

(D)

A Joiner transformation may perform a full outer join only when no file sources are involved in the join

(both sides are relational).

3 or more data sources connected to a Joiner

Choose Answer

(A)


(B)

The mapping is invalid because there is an active transformation between SQ_ITEMS and the Joiner

transformation. If the Aggregator transformation was eliminated or replaced with a passive transformation,

the mapping would be valid.

(C)


transformation.

(D)



Joiner




Choose Answer

(A)


(B)


Qualifier, and in this mapping there are two transformations between SQ_ITEMS and the Joiner

transformation.

(C)



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(D)




and transformation expression is valid. Select the statement that is true.

Joiner transformations




Choose Answer

(A)

One

(B)

Two

(C)

Three

(D)


directories.




for this?

Choose Answer

(A)


(B)


(C)


(D)



It is desired to override the SQL of a non-shared, uncached Lookup transformation in order to add a

WHERE clause. Select the action below that MUST be taken to allow the session to run as designed.


Choose Answer

(A)

Cache the Lookup


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(B)


(C)


(D)





mapplet.

Choose Answer

(A)


(B)


(C)


(D)




function.

Choose Answer

(A)



(B)


target.

(C)



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(D)




Choose Answer

(A)

Database

(B)


(C)


(D)


Unconnected Lookup transformation

What is one disadvantage of using an unconnected (sometimes called function mode) Lookup

transformation?

Choose Answer

(A)

If there is no match in the Lookup condition, the Informatica server returns a transformation error.

(B)

A reusable unconnected Lookup can not have more than one instance in a mapping.

(C)

An unconnected Lookup transformation does not support user-defined default values.

(D)

An unconnected Lookup transformation does not support a static lookup cache.


NEXTVAL port of a Sequence Generator

Can the NEXTVAL port of a Sequence Generator transformation be connected to the PRIMARY KEY

column of two different target table definitions in a mapping? Assume that the two definitions represent

different physical tables on the database server.

Choose Answer


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(A)

Yes, always.

(B)

Yes, but only if the two tables share a primary - foreign key (referential integrity) relationship.

(C)

No, because the Sequence Generator produces unique values (within the selected range) and this would

result in a unique constraint error (duplicate key values) in one or both of the tables.

(D)

No, this is not allowed in the Mapping Designer.

Sequence Generator transformation

What is the difference between the NEXTVAL and the CURRVAL ports of the Sequence Generator

transformation? Assume that they are both connected to the input ports of another transformation.

Choose Answer

(A)


NEXTVAL plus one.

(B)


NEXTVAL minus one.

(C)


CURRVAL plus one.

(D)





Choose Answer

(A)



(B)


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(C)


(D)






Choose Answer

(A)


(B)


(C)


(D)




Sorter transformation

When a sorter transformation is included in a Mapping that is run in a Workflow, when does the data sort

occur?

Choose Answer

(A)

Before the Workflow runs.

(B)

After the Workflow runs.

(C)

Either before or after the Workflow runs, depending on the sorter properties.

(D)

During the time the Workflow runs (Session Task run time).


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Choose Answer

(A)

The Sorter transformation must be used immediately downstream of a Source Qualifier transformation.

(B)

The Sorter transformation must be used immediately downstream of a Source Qualifier transformation

that reads from a relational source.

(C)

The Sorter transformation supports multiple sort levels, so any sort key can have a secondary sort

associated with it.

(D)

The user is allowed to modify the ORDER BY clause generated by the Sorter transformation.

Aggregator data RAM cache

By default, the Aggregator data RAM cache size is 2 Mbytes, and the index RAM cache is 1 Mbyte. What

would happen if a user ran a session that required a data RAM cache of 3 Mbytes and the data cache

size was left at the default?

Choose Answer

(A)

The session would fail when the Aggregator begins processing data.

(B)

The session would fail when the data RAM cache exceeds 2 Mbytes.

(C)

The Informatica server would automatically expand the data RAM cache to accommodate the additional

data (provided the RAM is available on the machine).

(D)

The Informatica server would automatically page the data to a file on the local disk.

Aggregator data cache size.

An Aggregator transformation will process 50 million rows per session, and the width of each row is 3

KBytes. There are two group-by ports, MONTH and CUSTOMER. Assuming that the data set contains


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two years worth of data, and that there are 500 customers who are represented for each month in the

data set, estimate the required data cache size.

Choose Answer

(A)

6 MBytes

(B)

12 MBytes

(C)

18 MBytes

(D)

36 MBytes

Aggregate cache

The aggregate cache always consists of

Choose Answer

(A)

An index and data cache in RAM, and an index and data file on the local disk.

(B)

An index and data cache in RAM, and an index and data cache on the local disk if the RAM caches

cannot contain all of the intermediate results in the data set.

(C)

An index and data cache in RAM, and an index and data file on the local disk if the file names and

directory (or Server Variable) have been specified as an Aggregator property.

(D)

An index and data cache in RAM, and an index and data file on the local disk if the Incremental

Aggregation property has been set to true when the session runs.

Sorted Input in Aggregator transformation

An Aggregator transformation has two group-by ports: CUSTOMER_ID and ORDER_DATE, in that order.

The Sorted Input property is set to true. The Order By clause in the SQL for the Source Qualifier contains

this syntax: ORDER BY CUSTOMER_ID, ORDER_DATE, MANF_ID. Assuming that the sort order on the

database server matches the sort order of the session and everything else is valid, what would happen

when this session started?


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Choose Answer

(A)

The session would run normally.

(B)

The session would fail, because the columns in the ORDER BY clause in the SQL do not exactly match

the group-by ports in the Aggregator transformation.

(C)

The session would fail, because when the Sorted Input property is set to true, no more than one group-by

port is allowed.

(D)

The session would run, but sorted data would not be used because the columns in the ORDER BY clause

in the SQL does not exactly match the group-by ports in the Aggregator transformation, and this may

adversely affect performance.


Aggregator transformation variable port

What type of expressions can be used in an Aggregator transformation variable port?

Choose Answer

(A)

Aggregate or non-aggregate expressions, provided they are not used together in a single variable port.

(B)

Aggregate and non-aggregate expressions, together in the same variable port.

(C)

Aggregate, non-aggregate and conditional expressions, together in the same variable port, provided that

the variable port is also made a "group-by" port.

(D)

Non-aggregate and conditional expressions only.

Aggregator transformation

What type of expressions can be used in an Aggregator transformation output port?

Choose Answer

(A)

Aggregate or non-aggregate expressions, provided they are not used together in a single output port.

(B)

Aggregate and non-aggregate expressions, together in the same output port.

(C)


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Aggregate, non-aggregate and conditional expressions, together in the same output port.

(D)

Aggregate only.

Outer join

Can a Source Qualifier be used to perform an outer join when joining two database tables?

Choose Answer

(A)

Yes, but it requires that the user modify the join SQL by hand.

(B)

Yes, but it requires that the user select left or right outer join as the Source Qualifier Join Type property.

(C)

No, because this may produce null values in ports and the Source Qualifier does not support default

values.

(D)

No, this function is not supported by the Source Qualifier- a Joiner transformation would need to be used.

Join two relational sources

A user desires to join two relational sources with a single Source Qualifier. The sources and the Source

Qualifier have been correctly imported into the mapping. Next, she must establish a primary / foreign key

relationship between two ports in the source definitions. Assuming that the relationship does not currently

exist on the database server, what are the required steps to do this?

Choose Answer

(A)

Use the Source Analyzer to establish the primary / foreign key relationship and save the repository.

(B)

Use the Source Analyzer to establish the primary / foreign key relationship, save the repository, and run

the appropriate SQL statement on the database tables to create the actual primary / foreign key

relationship.

(C)

Use the Source Analyzer to establish the primary / foreign key relationship, open the SQL Editor in the

Source Qualifier and generate the join statement, modify the join statement if required, and save the

repository.

(D)


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Use the Source Analyzer to establish the primary / foreign key relationship, regenerate the Source

Qualifier SQL using the SQL Editor, press the Okay button, and save the repository.

Data source(s)

What type of data source(s) can be read with the Source Qualifier transformation?

Choose Answer

(A)

Relational databases

(B)

Relational databases and flat files

(C)

Relational databases, flat files and Cobol

(D)

Relational databases, flat files, Cobol and certified ERP sources such a Peoplesoft and SAP/R3.

Override the default Source Qualifier join

Under what circumstances should a user override the default Source Qualifier join?

Choose Answer

(A)

The datatypes of the columns used in the join condition do not match.

(B)

The Source Qualifier is being used to join two tables located on different database servers (a

heterogeneous join).

(C)

The Source Qualifier is being used to join two or more flat files.

(D)

The order of the Source Qualifier ports has been changed since the mapping was first saved.

Generate a default query

A user finds that she is unable to generate a default query in the Source Qualifier SQL Editor. What is a

possible reason for that?


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Choose Answer

(A)

The datatypes in the Source Qualifier do not match the corresponding datatypes in the source

definition(s) for each field and port.

(B)

The Source Qualifier does not have one or more ports connected to another transformation or target in

the mapping.

(C)

The Source Qualifier property "Allow default query" is unchecked (set to false).

(D)

The Source Qualifier is not connected to the source database.


Alter the datatypes in the Source Qualifier

Under what circumstances is it desirable to alter the datatypes in the Source Qualifier?

Choose Answer

(A)

When the precision required by the mapping is less than the precision of the data stored in the table or


(B)

When the precision required by the mapping is greater than the precision of the data stored in the table or


(C)

To alter the way the source database binds data when it is imported into the mapping.

(D)

Never. The datatypes in the Source Qualifier and the corresponding source(s) must match.

Informatica expression reserved word

Can a port in an Expression transformation be given the name DISTINCT ?

Choose Answer

(A)

Yes

(B)

No, because DISTINCT is an ANSI SQL reserved word.

(C)

No, because DISTINCT is an Informatica expression reserved word.


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LTRIM

For a row where the value of the port LAST_NAME is equal to the string 'Damato' what would be the

return value of the expression LTRIM ( LAST_NAME, 'A' )?

Choose Answer

(A)

Dmato

(B)

Dmto

(C)

amato

(D)

Damato

Mapping validity

Which situation would always cause a mapping to be invalid?

Choose Answer

(A)

A target definition with no data flowing into it

(B)

Two ports with different data types connected together

(C)

Two active transformations connected to the same transformation

(D)

A Source Qualifier with port names that do not match a field name in the corresponding Source definition.

Data types

A developer wishes to connect two ports that have different data types. Is this allowed?

Choose Answer

(A)

Yes, always

(B)

Yes, provided that the data types are compatible. The Informatica server will automatically convert the

original type to match the destination type.


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(C)

Yes, provided that the data types are compatible, and the developer writes a valid conversion function to

convert the original type to match the destination type.

(D)

No, never.

Working with Expressions

A transformation has the following ports: Port_1: String, Input port; Port_2: String, Input port; Port_3:

String, Output port. Which of the expressions shown below would be valid? Assume that it is associated

with Port_3 and that the string ENDSTRING is not a parameter or mapping variable.

Choose Answer

(A)

Port_1 Port_2 'ENDSTRING'

(B)

Port_1 Port_2 "ENDSTRING"

(C)

Port_1 Port_2 ENDSTRING

(D)

CONCAT(Port_1, CONCAT(Port_2, "ENDSTRING"))


Transformation expressions

A transformation has the following ports: Port_1: Decimal, Input port; Port_2: Decimal, Input port; Port_3:

String, Input port; Port_4: Decimal, Output port; Port_5: Decimal, Output port. Which of the expressions

shown below would be invalid? Assume it is associated with Port_4.

Choose Answer

(A)


(B)

IIF ( Port_1 > 5, Port_1 10 )

(C)


(D)



Session Task

Whether or not a Session Task can be considered to have heterogeneous targets is determined by


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Choose Answer

(A)

The Mapping properties alone.

(B)

The Session Task properties alone.

(C)

Either the Mapping properties or the Session Task properties.

(D)

Either the Mapping properties or the Workflow properties.


Editing Target definition

Under what circumstances can a Target definition be edited from the Mapping Designer, within the

mapping where that Target definition is being used?

Choose Answer

(A)

When the Target definition is not shared (not a shortcut).

(B)

When the Target definition is not shared (not a shortcut) and when the user has write permission on the

folder where the mapping is stored.

(C)

Always

(D)

Neve


Target definitions

What types of Target definitions are supported in a mapping?

Choose Answer

(A)

Relational

(B)

Relational and XML

(C)

Relational, XML and flat file

(D)

Relational, XML, flat file and COBOL


Flat File Wizard


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A developer has used the Flat File Wizard to create a fixed-width flat file source definition. This source

definition is used in several mappings. The next day, she discovers that the actual flat file that will be

accessed by the Informatica server will be comma delimited. What action, if any, should be taken?

Choose Answer

(A)

No action need be taken provided the new file format is valid.

(B)

Edit the Source definition properties to make them correct and save the changes to the repository.

(C)

Launch the Flat File Wizard using the Source definition and edit the properties to make them correct.

Save the changes to the repository.

(D)

Delete the Source definition, save the repository, re-import it using the Flat File Wizard and define the

properties to make them correct. Add the new Source definition to the affected mappings and save the

changes to the repository.


Primary and foreign key relationship

Can a developer manually define a primary and foreign key relationship between two columns in two

different relational Source definitions?

Choose Answer

(A)

Yes, always.

(B)

Yes, provided that the data types and precision matches between the two columns.

(C)

Yes, provided that the data types and precision matches between the two columns and the relationship

exists on the physical database tables when the session runs.

(D)

Yes, provided that the data types and precision matches between the two columns. The relationship can

be set between the Source definitions regardless of whether the relationship exists on the physical

database tables, but if the relationship does not exist in the database, the session may fail if referential

integrity is faulty.

Tasks on a port level

Which tasks can be performed on a port level (using one specific port)?


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Choose Answer

(A)

Enter expressions, define port variables, override default values

(B)

Enter expressions, define port and Mapping variables, override default values

(C)

Define local and Mapping variables, define parameters, override default values

(D)

Enter expressions, define port and Mapping variables, define parameters


Supported transformation ports

What types of transformation ports are supported?

Choose Answer

(A)

Input, Output, Variable

(B)

Input, Output, Input / Output, Variable

(C)

Input, Output, Variable, Aggregate

(D)

Input, Output, Input / Output, Variable, Parameter

link a port

A user is attempting to link a port on the left to another port in a different transformation on the right. The

Designer will not establish the connector link (blue arrow). What are the possible reasons for this?

Choose Answer

(A)

Link columns mode not set, or left port not an output port

(B)

Link columns mode not set, or left port not an output port, or data type mismatch

(C)

Link columns mode not set, or left port not an input port, or right port not an output port, or data type

mismatch

(D)


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Link columns mode not set, or left port not an output port, or right port not an input port, or data type

mismatch

Copy a Source Definition from a shared folder to a non-shared folder

A user desires to copy a Source Definition from a shared folder to a non-shared folder. Assuming that the

user has write permission on the non-shared folder, what must be done in order for this operation to work

as intended?

Choose Answer

(A)

The Source Analyzer must be active and the non-shared folder must be open.

(B)

The Source Analyzer must be active, the non-shared folder must be open, and the user must hold down

the Ctrl key while dragging.

(C)

The Source Analyzer must be active and the shared folder must be open.

(D)

The Source Analyzer must be active, the shared folder must be open, and the user must hold down the

Ctrl key while dragging.

Designer option cannot be set locally

Specify which Designer option cannot be set locally (differently for each client machine).

Choose Answer

(A)

Whether to display column names or business names for all Source Qualifiers

(B)

Whether to import primary keys when importing a target definition

(C)

Whether to import data type lengths and precisions for Source Definitions

(D)

Whether to display targets grouped by database in the Navigator Window

"Find" search tool

The Designer includes a "Find" search tool as part of the standard toolbar. What can it be used to find?

Choose Answer


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(A)

Column or port names in any transformation, source or target definition

(B)

Column or port names in any transformation, source or target definition, and strings in any of the output

windows

(C)


windows, and expressions in any transformation

(D)


windows, expressions in any transformation, and descriptive text

Mapplet definition



Choose Answer

(A)

The mapping will be valid as it is.

(B)



(C)



(D)




Choose Answer

(A)


(B)



(C)


the mapplet.

(D)


the mapplet.




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transformations, if any, but not written to the target table.

Router transformation that has three groups defined

Specify which statement below best describes the behavior of a Router transformation that has three

groups defined.

Choose Answer

(A)




(B)




(C)





(D)





Update Strategy transformation

It is desired to run a session where every row that is processed by the session updates the target table

based on the primary key value. Assume that the target table definition has a primary key, and all other

session and mapping properties are left to their defaults. Select the statement below that is true.

Choose Answer

(A)

The only action that is necessary is to set the Treat Source Rows As session property to Update.

(B)


condition must be written to be true for all rows that are desired to update the target table.

(C)



Source Rows As session property must be set to Update.

(D)



Source Rows As session property must be set to Data Driven.

Expressions used in an Update Strategy


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What type of expressions can be used in an Update Strategy transformation?

Choose Answer

(A)

Immediate If ( IIF)

(B)

Immediate If (IIF) or DECODE

(C)

Immediate If (IIF), DECODE, or IF THEN ELSE

(D)

Any valid non-aggregate expression that is supported by the transformation language.

Forward Rejected Rows in Update Strategy

Refer to the diagram below. The Update Strategy transformation contains an expression that may tag




is true.

Choose Answer

(A)


(B)



(C)





(D)








selection?

Choose Answer

(A)


(B)




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(C)


transformation.

(D)



Joiner




Choose Answer

(A)


(B)


Qualifier, and in this mapping there are two transformations between SQ_ITEMS and the Joiner

transformation.

(C)



(D)




and transformation expression is valid. Select the statement that is true.

Joiner transformations




Choose Answer

(A)

One

(B)

Two

(C)

Three

(D)


directories.



54/72



for this?

Choose Answer

(A)


(B)


(C)


(D)



It is desired to override the SQL of a non-shared, uncached Lookup transformation in order to add a

WHERE clause. Select the action below that MUST be taken to allow the session to run as designed.


Choose Answer

(A)

Cache the Lookup

(B)


(C)


(D)





mapplet.

Choose Answer

(A)


(B)


(C)



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(D)




function.

Choose Answer

(A)



(B)


target.

(C)


(D)




Choose Answer

(A)

Database

(B)


(C)


(D)



56/72


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(A)


NEXTVAL plus one.

(B)


NEXTVAL minus one.

(C)


CURRVAL plus one.

(D)





Choose Answer

(A)



(B)



(C)


(D)






Choose Answer

(A)



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(B)


(C)


(D)





When a sorter transformation is included in a Mapping that is run in a Workflow, when does the data sort

occur?

Choose Answer

(A)

Before the Workflow runs.

(B)

After the Workflow runs.

(C)

Either before or after the Workflow runs, depending on the sorter properties.

(D)

During the time the Workflow runs (Session Task run time).



Choose Answer

(A)

The Sorter transformation must be used immediately downstream of a Source Qualifier transformation.

(B)

The Sorter transformation must be used immediately downstream of a Source Qualifier transformation

that reads from a relational source.

(C

informatica dumps 9.1

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