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

What do you mean by e-r model?

1063

Explain all codd's rules for relational database system?

995

What is data independence and also explain its types?

982

Explain the advantages of rdbms?

989

What is normalization and why it is used?

1194

What do you mean by super key, primary key, foreign key and candidate key?

1027

What do you mean by denormalization?

1103

What do you mean by conflict serializability in dbms?

976

What do you mean by dml compiler?

1130

What is the difference between delete and truncate command in dbms?

1070

What do you mean by buffer manager?

1106

What is acid property in dbms?

1029

What is database management system(dbms) and why it is used?

1089

What is bcnf standard form in dbms?

1093

Explain the difference between dbms and rdbms?

1002

Un-Answered Questions { Databases }

How can you determine the number of sqlnet users logged in to the unix system?

615

11. Display the client number and name and the client number and name of the person who referred that client.

2399

What stored by the msdb? : sql server database administration

1061

Why is rdbms important?

934

What are the different editions available in sql server 2000?

1128

What happens if null values are involved in string operations?

1036

What is a mutating table error and how can you get around it?

1133

how to remove the duplicate in odi?

673

Is a primary key unique?

1041

What is an inconsistent dependency?

1092

Explain the informix instance.

Can we join more than 2 tables in sql?

1100

What is pl sql record in oracle?

1098

Explain the use of analyse option in exp command.

1207

How to count rows with the count(*) function in ms sql server?

1073

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