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

Oracle (3253)
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

Can unique keys be null?

949

Does truncate need commit?

1005

How do you create a unique index?

1092

How do I create an index in word?

1074

Do we need commit after truncate?

1136

How many unique keys can a table have?

1068

Does indexing improve query performance?

1 1330

Does normalization improve performance?

1103

How can you tell the difference between an index and a view?

977

Do we need to create index on primary key?

966

How many columns should be in an index?

1015

How is indexing done in search engines?

1023

How many subqueries can be nested in a statement?

1039

How many clustered indexes can you have?

1037

How do you explain an index?

1331

Un-Answered Questions { Databases }

what is sql? : Sql dba

1071

Explain prerequisites and post activities of oracle database installation

2185

explain the storage models of olap? : Sql server database administration

1014

How to stop database server in postgresql?

1018

Explain the uses of control file.

1100

Please explain oracle left join with an example?

1095

What can I use microsoft access for?

866

What is 5nf in normalization form?

1045

What advantages does DBMS have over traditional file systems?

1081

Determine if oracle date is on a weekend?

1089

What are the differences between clustered and non-clustered index?

1077

What are the similarities between a function and a procedure?

959

How to convert binary strings into integers in ms sql server?

1081

Can you lock more than one database at the same time in mongodb?

Does QTP Support the Propjects which are running in Dot Net? As we are starting with new project in Dot net need to use automation tool?Please advice & let me know what would be the best.

2103

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