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

What is the purpose of self join?

988

What is the maximum length of an alert name?

1016

What is a primary index?

939

What is query optimization process?

1028

What is a non equi join?

991

What is a db view?

915

What is the use of commit?

1011

What is a covering index?

1001

What is difference between count (*) and count 1?

940

What is normalization process?

1188

What is difference between rownum and row_number?

985

What is meant by indexing files?

1058

What is candidate key with example?

1001

What is the purpose of optimization?

1014

What is the full form of ddl?

946

Un-Answered Questions { Databases }

Define self join in sql server joins?

969

How many sql statements are used?

1033

Explain the dbcc pintable command when would you use it?

931

What is 1nf in the dbms?

1064

Can we protect our pl/sql source code?

1059

Explain about normal forms?

1063

What is catalog views?

1084

What is a relational database management system?

1137

What is the difference between Delete, Truncate and Drop in Oracle?

1147

What is used to replicate sessions between instances in coldfusion clusters?

1087

what are all the different types of indexes? : Sql dba

1065

Where does mongodb store data ubuntu?

What is mongodb architecture?

What is dba in dbms?

1078

What is the purpose of using ifnull() function?

1004

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