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 do you understand by recovery catalog?

575

What do you understand by the term 'system change number (scn)'?

599

What is the difference between a database and instance?

704

What do you mean by oracle dba?

574

What is the meaning of database backup?

631

What do you understand by the term 'normalization'?

678

Explain the various modes of normalization?

546

What is the relation between database and instance?

648

What is the difference between sga and pga?

626

What do you mean by oracle database?

580

What are the important tasks of common oracle dba?

566

What is the difference between a database and instance? What is the relation between them?

594

What are the possible ways to gain information regarding the control file?

577

What is the difference between cold backup and hot backup?

588

What are the various ingredients of sga?

577

Un-Answered Questions { Databases }

between cast and convert which function would you prefer and why?

970

How to use fetch statement in a loop?

1035

Is json a nosql?

987

How do I connect to oracle?

1040

What is backup in Oracle?

1015

What if we write return in procedure?

1442

How do I open a .db file?

1052

if no size is defined while creating the database, what size will the database have? : Sql server administration

1019

What plvcmt and plvrb does in pl/sql?

1331

explain the term ‘attribute’?

961

How you can change a cross join into an inner join?

993

How to convert numeric expression data types using the cast() function?

1079

Explain unique key in sql server?

1021

What are the non-standard sql commands supported by 'mysql'?

1004

What is data types in database?

989

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