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 byte Unique integers does OIDs in PostgreSQL have?

1314

What is the command that can be used to allocate memory in postgreSQL?

1408

Why Update is too slow

1406

What does the option psql -l of PostgreSQL display?

1447

What is the operator that is used for case-insensitive regular expression searches in PostgreSQL?

1269

What is the option that can be used in PostgreSQL to find out how the query optimizer is evaluating the query given?

1316

What is the option used in PostgreSQL to increase the number of shared memory buffers shared among the backend processes

1325

What is the powerful database utility that can be used for building, executing and processing queries upon PostgreSQL databases?

1602

Does PostgrSQL support Column constraints? If so how is it done?

1280

Explain what is PostgreSQL?

1 2054

State some of the advanced features of PostgreSQL?

1 2296

Explain about Write Ahead logging?

1 2383

Explain about Multi version concurrency control?

1 2203

How to start the database server?

1 2046

How to stop the database server?

1 2150

Un-Answered Questions { Databases }

Explain about query and reporting.

2090

What is clr ddl trigger?

966

how to overcome kernel isssues

1625

When using replication, can some members use journaling and others not?

Is mysqli faster than mysql?

927

What is recompile sql server?

1038

What is java sql package?

1096

Why do we need database?

912

What are the different types of DBMS architecture?

1081

What is the blob data type?

796

What does sharding mean?

1000

How do you know if a relationship is 2nf?

944

Is left join same as join?

993

How do I run a pl sql program?

1128

What is a Phantom Deadlock?

981

For More Un-Answered { Databases } Questions Click Here