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

How many primary keys can a table have?

1009

Does truncate remove indexes?

1035

How can we find duplicate records in a table?

948

Can we insert data in view?

967

How do I remove all records from a table?

1075

Why truncate is faster than delete?

1114

Are subqueries faster than joins?

1022

Does truncate free space?

1012

Can a foreign key be null?

1091

How do you respond to dementia behavior?

971

Can we create clustered index without primary key?

965

How many types of index are there?

1042

Is primary key an index?

992

How do you optimize a query?

1003

Is natural join same as inner join?

943

Un-Answered Questions { Databases }

In which language it is written?

950

Explain transaction server distributed transaction?

982

Explain intellisense for query editing

1029

How do I install microsoft access 2010?

935

Hi my program is accesing data from two db2 databases.what is the bind card for this program to genarate plan? how to specify the two owners and two qualifiers in bind card

2168

Explain meant by 3-tier architecture?

947

How is image stored in database?

1044

What is the use of file param in imp command?

1165

What are the drawback of rdbms?

942

What is row?

1085

What is meant by sharding?

931

What is redo log?

1067

Explain autonomous transaction.

1157

What causes mysql too many connections?

962

Explain the functionalities that views support?

1117

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