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)
InfluxDB (0)
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Firebird (5)

Database Management (1411)
Databases AllOther (288)

Databases Interview Questions

Questions Answers Views Company eMail

Is inner join same as self join?

1119

Does group by remove duplicates?

1046

Is inner join faster than left join?

1191

Is primary key always clustered index?

1023

Is primary key clustered index?

951

Can we rollback truncate?

1001

Can delete statement be rollbacked?

989

Can we use distinct and group by together?

1057

Do we need to rebuild index after truncate?

1036

What is the basic form of sql query?

947

Is sql sequential or random?

1039

Why truncate is used in sql?

1008

How many types of indexes are there in sql?

985

What are sql procedures?

1029

What is dense_rank in sql?

988

Un-Answered Questions { Databases }

How to disable stored procedure sql server?

1609

How do I install mysql on windows 7?

997

What is substitution variable in pl sql?

1051

How index is implemented in oracle database?

1006

Define atomicity and aggregation.

1037

What is the use of RDBMS?

1007

Write steps for neo4j installation?

What is a query?

881

Oracle Data Integrator Interview Questions and answers?

654

What the default privileges which get assigned ?

940

What are the elements of a database?

919

Explain the types of exception?

1146

What data structure does mysql use?

1020

Is foreign key should be unique?

767

Explain encryption of entire databases without the need for application changes in sql server 2008?

1047

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