KAASHIV INFOTECH

The Asia, India, Tamil Nadu Book Of Record Holders

SQL SERVER –Booklet 12- Gives you the interview tips in SQL Server

SQL SERVER Interview Questions-2014

KAASHIV INFOTECH

Welcomes you to the Expert Voice Corner

Mr.J.Venkatesan PrabuVenkatesan Prabu Jayakantham (venkat) has more than 8 years experience in the Microsoft Technologies such as VB.Net, ASP.Net, C#.net, SSIS, SSAS, ADO.Net, etc., He is the Managing Director of KAASHIVINFOTECH (http://www.kaashivinfotech.com/),a software company in Chennai. Before that, he worked in HCL Technologies (India and Australia) for six years as Project Lead. As a service motive, Venkat contributed more than 700 articles which is read by the developers in 170 countries (400 developers per day) (http://venkattechnicalblog.blogspot.com/). Aligned with KaaShiv InfoTech’s mission,he met more than 20,000 young minds and spreaded Microsoft Technologies / Career guidance programs. Venkat won many awards in his career, which includes Prestigious Microsoft MVP (Most Valuable Professional) award for the years 2008,2009,2010,2011,2012,2013 and won many awards. List of other awards in his career,

Microsoft certified Smart .Net Candidate in 2004

Most valuable member for dotnetspider site in 2007

HCL SQL Subject Matter expert (SME - SQL Server) for the year (2008,2009)

HCL Special contribution award winner on Dotnet skills for year(2008) HCL SQL

Knowledge Champion for the year 2009

Mind Cracker MVP on SQLServer –2010 for the year 2010,2011

INETA champion - Gold Member – 2010 for the year 2010 HCL Service Contribution

Award for the year 2010

Leading Lights "Rising Star" award from Common Wealth Bank, Australia for the year

2010

TECHNICAL CERTIFICATION

Cisco certified Network Associate (CCNA) – 2004

Microsoft Certified Application Developer (MCAD) – 2005

ACKNOWLEDGEMENT

I would like to thank my family members for their support and encouragement. Without their support it would be impossible for me to publish this e-book. I would also like to thank my KaaShiv InfoTech team for their support to publish this e-book.

DISCLAIMER

All rights reserved. No part of this book may be copied, adapted, abridged or stored in any retrieval system, computer system, photographic or other system or transmitted in any form or by any means without the prior written permission of the copyright holders. Any breach will entail legal action and permission without further notice.    

1. What is Cross Join? A cross join that does not have a WHERE clause produces the Cartesian product of the tables involved in the join. The size of a Cartesian product result set is the number of rows in the first table multiplied by the number of rows in the second table. The common example is when company wants to combine each product with a pricing table to analyze each product at each price..2. How do SQL server 2000 and XML linked? Can XML be used to access data?FOR XML (ROW, AUTO, EXPLICIT) You can execute SQL queries against existing relational databases to return results as XML rather than standard rowsets. These queries can be executed directly or from within stored procedures. To retrieve XML results, use the FOR XML clause of the SELECT statement and specify an XML mode of RAW, AUTO, or EXPLICIT.OPENXML OPENXML is a Transact-SQL keyword that provides a relational/rowset view over an in-memory XML document. OPENXML is a rowset provider similar to a table or a view. OPENXML provides a way to access XML data within the Transact-SQL context by transferring data from an XML document into the relational tables. Thus, OPENXML allows you to manage an XML document and its interaction with the relational environment.

3.What command do we use to rename a db? sp_renamedb ‘oldname’ , ‘newname’ If someone is using db it will not accept sp_renmaedb. In that case first bring db to single user using sp_dboptions. Use sp_renamedb to rename database. Use sp_dboptions to bring database to multi user mode. 4. What are the different types of replication? Explain.The SQL Server 2000-supported replication types are as follows:TransactionalSnapshotMergeSnapshot replication distributes data exactly as it appears at a specific moment in time and does not monitor for updates to the data. Snapshot replication is best used as a method for replicating data those changes infrequently or where the most up-to-date values (low latency) are not a requirement. When synchronization occurs, the entire snapshot is generated and sent to Subscribers.Transactional replication, an initial snapshot of data is applied at Subscribers, and then when data modifications are made at the Publisher, the individual transactions are captured and propagated to Subscribers.Merge replication is the process of distributing data from Publisher to Subscribers, allowing the Publisher and Subscribers to make updates while connected or disconnected, and then merging the updates between sites when they are connected. 

5. What are the OS services that the SQL Server installation adds?MS SQL SERVER SERVICE, SQL AGENT SERVICE, DTC (Distribution transac co-ordinator) 6. What are three SQL keywords used to change or set someone’s permissions?GRANT, DENY, and REVOKE.7. What does it mean to have quoted identifier on? What are the implications of having it off? When SET QUOTED_IDENTIFIER is ON, identifiers can be delimited by double quotation marks, and literals must be delimited by single quotation marks. When SET QUOTED_IDENTIFIER is OFF, identifiers cannot be quoted and must follow all Transact-SQL rules for identifiers. 8. What is the STUFF function and how does it differ from the REPLACE function?  STUFF function to overwrite existing characters. Using this syntax, STUFF(string_expression, start, length, replacement_characters), string_expression is the string that will have characters substituted, start is the starting position, length is the number of characters in the string that are substituted, and replacement_characters are the new characters interjected into the string. REPLACE function to replace existing characters of all occurance. Using this syntax REPLACE(string_expression, search_string, replacement_string), where every incidence of search_string found in the string_expression will be replaced with replacement_string.

9. How many rows are returned by these two select statements? 2 and 2 Each select statement actually returns 2 rows. You can use this script to check this: create table mytable( id int identity(1,1), mychar varchar(20))goinsert mytable select nullinsert mytable select ''insert mytable select ' 'goset ansi_nulls onset ansi_null_dflt_on onselect * from mytablewhere mychar is not nullselect * from mytablewhere mychar <> '' and mychar is not nullselect * from mytablewhere mychar <> ' ' and mychar is not nullselect * from mytable where mychar = ''select * from mytable where mychar = ' 'set ansi_null_dflt_on offset ansi_nulls offgodrop table mytable

10. If you run this, what does it return? select applock_mode('public', 'SalesApp', 'Transaction')The type of lock being held by an application that requested it. This command returns the lock mode held by an application that was requested with the sp_getapplock procedure. 

insert mytable select ''insert mytable select ' 'select * from mytable where mychar = ''select * from mytable where mychar = ' '

11. How will you map objects to a relational database ? How will you map class inheritance to relational data model ?Due to impedance mismatch between object and relational technology you need to understand the process of mapping classes (objects) and their relationships to tables and relationships between them in a database. Classes represent both behavior and data whereas relational database tables just implement data. Database schemas have keys (primary keys to uniquely identify rows and foreign keys to maintain relationships between rows) whereas object schema does not have keys and instead use references to implement relationships to other objects.

12. What is a view ? Why will you use a view? What is an aggregate function ?View is a precompiled SQL query, which is used to select data from one or more tables. A view is like a table but it doesn’t physically take any space (i.e. not materialized).Views are used forProviding inherent security by exposing only the data that is needed to be shown to the end user. Enabling re-use of SQL statements.Allows changes to the underlying tables to be hidden from clients, aiding maintenance of the database schema (i.e. encapsulation)Views with multiple joins and filters can dramatically degrade performance because views contain no data and any retrieval needs to be processed. The solution for this is to use materialized views or create de-normalized tables to store data. This technique is quite handy in overnight batch processes where a large chunk of data needs to be processed. Normalized data can be read and inserted into some temporary denormalized table and processed with efficiency.13. What is a database trigger ?A trigger is a fragment of code that you tell to run before or after a table is modified. There are typically three triggering EVENTS that cause trigger to 'fire':INSERT event (as a new record is being inserted into the database).UPDATE event (as a record is being changed). DELETE event (as a record is being deleted).Triggers can restrict access to specific data, perform logging, or audit access to data.

INTERNSHIP IN KAASHIV INFOTECH-Best internship provider in ChennaiWeb Application DesigningProject DocumentationLive Inhouse Application DevelopmentWindows ADO.NET ApplicationTemplate Designing-Live Template Designing, CSS

INTERNSHIP IN KAASHIV INFOTECH-Best internship provider in ChennaiWeb Application DesigningProject DocumentationLive Inhouse Application DevelopmentWindows ADO.NET ApplicationTemplate Designing-Live Template Designing, CSS

14. How can you keep track of all your database changes ?If you want to keep track of all changes to a particular record, such as who modified the record, what kind of modification took place, and when the record modification occurred then you can use triggers because you can capture every action that occurred on a particular table. For example, an INSERT trigger would fire when a particular database table has a record inserted. 15. What is the difference between “Stored Procedure” and “Function”?A procedure can have both input and output parameters, but a function can only have input parameters.Inside a procedure we can use DML (INSERT/UPDATE/DELETE) statements. But inside a function we can't use DML statements.

KaaShiv InfoTech Offers Best Inpant Training in Chennai. 

The training at KAASHIV INFOTECH focus on developing the technical oriented concepts that turn graduates into employable assets. Handled only by professionals from MNC companies, we know how to equip you with strong technologies fundamentals.

INPLANT TRAINING SCHEDULE FOR CSE/IT/MCA STUDENTS

Day Programme

 Day 1 BigData (Practical Demos)

Day 2Windows 8 App Development (Practical Demos)

Day 3Ethical Hacking (Facebook Hack,Server/Website Hacking(20 Attacks)

Day 4Cloud Computing (Live Server Demo,Live Pjt Implementation)

Day 5CCNA (-Networking-Router Configurations Practical Demo)

INPLANT TRAINING SCHEDULE FOR ELECTRONIC/ELECTRICAL/EIE STUDENTS:

Day Programme

Day 1 Embedded System  (Embedded Program Designing ,Chip Burning)

Day 2Wireless System  (Device Designing,Controlling Fans with Wireless Sensors)

Day 3 CCNA  (-Networking-Router Configurations Practical Demo)

Day 4Ethical Hacking  (Facebook Hack,Server/Website Hacking(20 Attacks)

Day 5Matlab  (Capture Image,Processing, Animate Images-Practical Demos)

MECHANICAL/CIVIL INPLANT TRAINING SCHEDULE:

Day Programme

Day 1 Aircraft Designing

Day 2 Vehicle Movement in Airports

Day 3 3D Packaging Designs

Day 4 3D Modeling

Day 5 3D Window Shading

Tags: inplanttraining in chennai,Best inplanttraining Program in Chennai

Anna Nagar,Best and Effective inplanttraining Program in Chennai at Anna Nagar ,inplanttraining Program for Engineering Students , inplanttraining Program for Arts and Science Students , inplanttraining Program for BE Students , inplanttraining Program for Information Technology Students ,inplanttraining Program in Chennai , Best and Effective inplanttraining Program in Chennai,Best and good inplanttraining Program in Chennai,inplanttraining Program for Computer Science Students, inplanttraining Program for Electronics and Communication Students,inplanttraining Program for Electrical and Electronics Students , inplanttraining Program for Engineering Studentsin anna nagar , inplanttraining Program for Arts and Science Students in anna nagar,Effective inplanttraining Program,Effective and Free inplanttraining Program,best inplanttraining in chennai near rountana,best inplanttraining for engineering students in chennai,best inplanttraining in anna nagar,inplanttraining for arts and science students in tamil nadu,best inplanttraining for arts and science students in anna nagar near rountana,best inplanttraining for ug graduates,best inplanttraining for pg graduates,best inplanttraining for b.e/b.tech students,best inplanttraining for ug graduates in chennai,best inplanttraining for ug graduates in anna nagar,best inplanttraining for ug graduates in tamil nadu,best inplanttraining for pg graduates in chennai,

best inplanttraining for pg graduates in anna nagar,best inplanttraining for pg graduates in tamil nadu,inplanttraining for cse students,inplanttraining for it students,inplanttraining for ece students,inplanttraining for eee students,inplanttraining on android in chennai,inplanttraining on java in chennai,inplanttraining on embedded systems in chennai,inplanttraining on matlab in chennai,inplanttraining on .net in chennai,inplanttraining on android in anna nagar,inplanttraining on java in anna nagar,inplanttraining on embedded systems in anna nagar,inplanttraining on matlab in anna nagar,inplanttraining on .net in anna nagar,best summer inplanttraining for arts and science ug graduates in chennai,best summer inplanttraining for arts and science pg graduates in chennai,best summer inplanttraining for engineering ug graduates in chennai,best summer inplanttraining for engineering pg graduates in chennai,best summer inplanttraining for arts and science ug graduates in anna nagar,best summer inplanttraining for arts and science pg graduates in anna nagar,best summer inplanttraining for engineering ug graduates in anna nagar,best summer inplanttraining for engineering pg graduates in anna nagar,best inplanttraining for mba graduates in chennai,best inplanttraining fo mca graduates in chennai,best inplanttraining for mba graduates in anna nagar,best inplanttraining for mca graduates in anna nagar,best summer inplanttraining for mba graduates in chennai,best summer inplanttraining for mca graduates in chennai,best summer inplanttraining for mba graduates in anna nagar, best summer inplanttraining for mba graduates near rountana,best summer inplanttraining for mca graduates near rountana

Address: KAASHIV INFO TECHShivanantha Building,X41, 5th Floor,2nd Avenue,(Near Ayyappan Temple)Anna Nagar, Chennai = 600040.Send Us Your Request Email To arun@kaashivinfotech.com,kaashiv.info@gmail.com,venkat@kaashivinfotech.comContact Number : 9840678906 ;; 9003718877 ;; 9962345637 ;

Visit our other websites:http://inplanttrainingchennai.com/ - Inplant Training Portalhttp://inplanttrainingchennai.com/ - Internship Portaljobsanddumps.com – Job Portalhttps://plus.google.com/u/0/108546120202591604585 https://plus.google.com/u/0/b/110228862465265998202/dashboard/overview

https://plus.google.com/u/0/b/117408505876070870512/dashboard/overview

https://plus.google.com/u/0/b/104468163439231303834/dashboard/overview https://plus.google.com/u/0/b/117640664472494971423/dashboard/overview

KaaShiv InfoTech Facebook Page https://www.facebook.com/KaaShivInfoTech Inplant Training Program in Chennai https://www.facebook.com/pages/Inplant-Training-Program-in-Chennai/1402097696706380

Internship in Chennai

https://www.facebook.com/pages/Internship-in-Chennai-KaaShiv/1446147235603704

Inplant Training

https://www.facebook.com/pages/Inplant-Training/256116284550327