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 is the difference between indexing and hashing?

1234

What is difference between rownum and rowid?

960

What is a document index?

1080

What is difference between joins and subqueries?

1175

What is a rownum?

1068

What is the difference between count () and rowcount ()?

1083

What is the difference between clustered index and primary key?

976

What is a non clustered primary key?

978

What is the process of indexing?

1064

What is the difference between row_number and dense_rank?

941

What is the difference between count and distinct count?

935

What is the datatype of rowid?

974

What is a natural primary key?

1115

What is an inner join?

1050

What is an example of a primary key?

1044

Un-Answered Questions { Databases }

Assuming today is Monday, how would you use the DBMS_JOB package to schedule the execution of a given procedure owned by SCOTT to start Wednesday at 9AM and to run subsequently every other day at 2AM.

2225

What is the schema of a table?

948

What is where clause in oracle?

1082

Explain what is public role in sql server?

1197

What is a candidate key in dbms?

1148

How to create a local temporary stored procedure?

1052

Explain what are the database objects? : sql server architect

985

Is mongodb relational database?

Can two tasks be assigned to the same partition in sybase?

862

Explain DBCC?

1020

Explain what are tp-lite and tp-heavy monitors?

968

What methods do you follow to protect from sql injection attack?

1078

What is difference sql and mysql?

1040

Explain in brief about Microsoft SQL server?

1184

Which is the most used database?

989

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