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)
Apache CouchDB (44)
Firebird (5)

Database Management (1411)
Databases AllOther (288)

Databases Interview Questions

Questions Answers Views Company eMail

Is left join faster than join?

992

Does inner join remove duplicates?

901

Can we rollback after truncate?

993

Can we create a trigger on view?

850

Does truncate release storage space?

1024

Are views faster than queries?

935

Can we perform dml on view?

982

How does a trigger work?

998

Can we insert delete data in view?

903

How does a covering index work?

913

Can we have two clustered index on a table?

976

How many types of primary keys are there?

989

Can we insert data into view?

854

How do you define a foreign key?

945

Can we join tables without foreign key?

915

Un-Answered Questions { Databases }

How is data stored in dbms?

893

Why is mongodb?

How can I get data from a database on another server?

939

What is the purpose of database management system?

999

what is the difference between join and union? : Sql dba

1041

Why do we use triggers?

923

If you are not sure what command does a particular unix function what is the best way to determine the command?

522

What are the benefits of ms access?

800

How to loop through a cursor variable?

1029

How is data stored in sql?

1008

What is advantage of dbms?

969

What is mutating trigger?

982

Can we create table in function?

917

Is sql dba a good career? : SQL DBA

949

Define "correlated subqueries".

878

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