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

Why are indexes and views important to an organization?

972

Which join is default?

969

What is before and after trigger?

976

Can I call a procedure inside a function?

1037

Which is better join or subquery?

1161

What is the difference between instead of trigger and after trigger?

1023

Why we use cross join?

978

Why indexing is needed?

1001

Why is normalization important?

1044

Which is faster subquery or join?

1240

Why do we need unique key in a table?

973

Which is the correct statement about truncate and delete?

1134

Why is a trigger used?

960

Why query optimization is needed?

936

Why use truncate instead of delete?

1031

Un-Answered Questions { Databases }

How to Recover a MySQL root password. Stop the MySQL server process. Start again with no grant tables. Login to MySQL as root. Set new password. Exit MySQL and restart MySQL server.

1037

How to count duplicated values in a column in ms sql server?

1109

How can check sql version from command line?

1098

What is foreign key sql?

1001

What do you understand by pl/sql records?

1029

What is mongodb config server?

Does postgres automatically index primary key?

812

CAN AUNIVERSE BE LINKED TO MORE THAN ONE DATASOURCE?

2088

HI, Please let me know the syllabus for Oracle OCA and OCP Certification

2518

What is mysql uuid?

941

What are the methods of filing?

963

Is microsoft access user friendly?

857

What is heap table in mysql?

983

What is difference between mysqli and pdo?

964

How to generate create view script on an existing view?

995

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