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 does `(+)` do in a where clause?

1 1542

Is there an oracle sql query that aggregates multiple rows into one row?

999

Why does oracle 9i treat an empty string as null?

1086

what is the dual table in oracle?

1016

Is there any function in oracle similar like group_concat of mysql?

1073

What is oracle update statement with inner join ?

1085

How to upsert (update or insert into a table)?

1018

How to convert csv to table in oracle?

1022

What is the string concatenation operator in oracle?

1203

How to compare dates in oracle sql?

1126

What is the sql query to concatenate column values from multiple rows in oracle?

1083

How to handle a single quote in oracle sql?

1076

Is there a function to split a string in plsql?

1083

How to speed up webrick?

1099

How can I get column names from a table in oracle?

1070

Un-Answered Questions { Databases }

How to use linked server?

1220

How can you see the connection used by mongos?

Explain unique key in sql.

1033

What are the four objects in a database?

1083

What type of join is sql join?

999

How exception is different from error?

1036

Who is the founder of database?

1138

What is a concurrency problem in dbms?

996

Disadvantages of the indexes?

1151

Can you tell the difference between ereg_replace() and eregi_replace()?

1051

what is database white box testing? : Mysql dba

1019

what information is maintained within the msdb database? : Sql server administration

989

what is dbms? : Sql dba

1011

What is load plan and types of load plans in ODI?

644

How does a covering index work?

982

For More Un-Answered { Databases } Questions Click Here