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 a Join and explain its types?

1 1173

What is the user of Primary key?

1 1043

How does index makes search faster?

QuestPond,

1 1036

How can we delete Duplicate row in table?

Wipro,

1 1133

How would you use user_constraints table in DB?

Wipro,

1 1082

Why do we backup Active Directory ?

1 1108

What is normalization? Describe its different types.

Wipro,

1 1175

What is the difference between DATETIME2 and DATETIME?

Infosys,

1 1143

What do you mean by the term 'normalization'?

Tech Mahindra,

1 1316

What is the difference between clustered and a non-clustered index?

NA,

1 1090

What is the difference between TRUNCATE and DROP?

1 1217

What are the disadvantages of using querystrings to send data from one page to another?

1 1112

What is the difference between ddl,dml and dcl commands?

BirlaSoft, Verifone,

1 1176

Explain DBCC?

QuestPond,

1 1026

Explain what role entity and relationship play in an ER diagram.

1 1135

Un-Answered Questions { Databases }

How to write a left outer join with the where clause in oracle?

1142

Equi join and non equi join is possible with sql server?

1117

Can you tell me about your experience with the administration of COTS system..? Also, how do you set up seed data..?

2694

what is the age limit for groups1 examination

2330

what is spatial nonclustered index

1050

What is in place upgrade in sql server?

1118

Can delete statement be rollbacked?

1046

what is bcp? When does it used? : Sql dba

1051

what ASIS BUSINESS PROCESS IN ORACLE FINANCE

2343

What is normalization and what are the advantages of it?

1050

how to start mysql server? : Sql dba

1257

Where can you add custom error messages to sql server?

1197

How can you append an identity column to a temporary table?

1062

What versions of clipper does netlib support?

1070

What is sql or structured query language?

1211

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