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ICS Computer Science Chapter-1+2 part-2 BISE

 Important Question for ICS Computer Science Part-2

Chapter-01+ 02(Data Basics + Basic concepts and Terminologies of Databases)

Q-1: Chose the correct option.

1x14=141 The process of arranging data in a logical sequence is

called.

Sorting Summarizing Data capturing classifying

2 A collection of related fields is

File Record Database None

3 DPMS stands for:

Databasemodeling

system

DatabaseManagement

System

Data businessmodel system

Databusiness

Managementservices

4 Which of the following is handled by DBMS?

Data integrity Data security Dataindependence

 All

5 The major components of DBMS is called

Databasemanager 

File manager Data manager All

6 SQL is a (n)

Unstructuredlanguage Structuredlanguage Objectorientedprogramming

Software

7 DBA stands for:

Databaseadministrator 

Data basic Administration

Database Application

Databaseauthority

8 A primary key that consists of more than one attribute iscalled a:

Foreign key Composite key Multimedia key Global key

9 Which of the following describes the primary key?It must beunique

It helps inindexing of alarge database

It makessorting quicker 

 All

10 An attribute is also known as :

Table Relation Row Field

11 A relation is also known as:

Table Tuple Relationship Attribute

12 SQL is used for:Datadefinition

Datamanipulation

Data definitionandmanipulation

Searchingrecords

13 An index can be used to:

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Improve theperformanceof thedatabase

Document thestructure of thedatabase itself 

Reduce datadependenceyfor applicationprogram

 All

14 A key that is used strictly for data retrieval purposes:

Secondarykey

Candidate key Composite key Primary key

Q-2: Write short answers any TEN, each question carry 2 marks. 2x10=20

 

i. 

Define Database.

 

ii. 

Who is data administrator?

  iii.  What you know about foreign key.

 

iv. 

Define Candidate key / alternate key?

 

v. 

What is primary key.

  vi.   Write the names of different keys which use in database, 

vii. 

What is entity? Give an example.

 

viii. 

What is secondary key?

 

ix. 

Write 3 advantages of DBMS.

  x.   Define consistency constraints?

 

xi. 

What is DBMS?

 

xii. 

Describe Data manipulation.

 

xiii. 

Define Data processing.

Q-3: Write detail answers of the following questions. 2x8=16

  i.  What is a key? Describe different types of keys used in databases. 

ii. 

What is DBMS? Briefly describe the advantages and disadvantages of DBMS.