Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Oracle (3259)
SQL Server (4518)
MS Access (429)
MySQL (1402)

Postgre (483)
Sybase (267)
DB Architecture (141)
DB Administration (291)

DB Development (113)
SQL PLSQL (3330)
MongoDB (502)
IBM Informix (50)

Neo4j (82)
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Firebird (5)

Database Management (1411)
Databases AllOther (288)

Databases Interview Questions

Questions Answers Views Company eMail

Explain about Normalization?

Infosys,

1066

What are triggers? How do you invoke a trigger on demand?

Hexaware,

1318

Explain about Joins?

Infosys,

990

What are the purpose of Normalisation?

HCL,

1050

Difference between group by clause and having clause in SQL?

Flextronics,

971

What are the types of subscriptions in SQL Server replication?

HCL,

1035

Â Explain what is sql override for a source taLle in a mapping?

Informatica,

1012

What are the characteristics of modern DBMS?

Ericsson,

1092

How to change the system date and time from SQL Plus Terminal ?

MCN Solutions,

1221

Define DML and DCL statements?

Hexaware, NIIT,

1 1661

What is function of ROLLUP ?

HCL,

1084

Where do we generally create INDEX?

Ernst Young, Thomson Reuters,

1 3141

What do you mean by 'normalization'?

Ernst Young, Thomson Reuters,

1060

Define Unique Key?

HCL,

1004

Difference between aggregate functions of sql?

EXL,

1103

Un-Answered Questions { Databases }

How to execute postgres function in pgadmin?

1054

What are different types of joins used in?

1110

Is mysql server free?

929

What are user defined functions in ms sql server?

999

Why do we need unique key in a table?

957

How do I view views in sql server?

1005

What are the main differences between the two?

892

What security features are available for stored procedure?

1036

What is difference between inner join and full join?

1067

Explain isolation levels that sql server supports?

1039

Explain about a primary key?

983

What are the operating modes in which database mirroring runs? : sql server DBA

1188

How connect excel to sql server?

995

Can we use pl sql in sql server?

1081

What is openedge translation manager?

1077

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