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

You loss one datafile and DB is running in ARCHIVELOG mode. You have full database backup of 1 week old and partial backup of this datafile which is just 1 day old. From which backup should you restore this file?

2 4478

what is architecture of your datastage project??? i came across this question many times in interviews in specific what can i answer plz help me

IBM,

1 4254

can i create trigger on synonym is it possible or not please help me

CGI,

4 11168

Can I recover a damaged SQL Server 2008 database with the undamaged .mdb and .ldf files?

Apple,

3 6907

I Defined SP1, Sp2 (sp=StoreProcedures)In Package Specification but I Implemented Sp1, sp2, sp3, sp4, sp5 then What type of Error You will find????

Infosys,

3 11815

If i insert record in table A and these record should update in table B by using Trigger.How to achieve this.

Saama Tech, TCS,

4 10875

Can we create SP inside SP ? If no Y ? If yes Y ? Explain with an example ?

IBM, L&T,

3 7224

In the below query i have performed the commit transaction statement but still the values after the save are not saved. Can you please let me know why are the statements after save are rolled back even after commiting the data. help me with the understanding declare @trans2 varchar(10)='transaction2' begin transaction @trans2 insert into emp values(100,'xy',600); save transaction @trans2 insert into emp values(200,'pq',700); insert into emp values(300,'pq',800); commit transaction @trans2 rollback tran @trans2

AllState,

1 3535

What are joins, explain all types of joins?

Bravura Solutions,

2360

Do you know about aggregate functions? What is row num function? Can it be used all databases?

Bravura Solutions, Cap Gemini,

1 4604

Write query to fetch second maximum salary from employee table.

Bravura Solutions, HCL,

4 7627

What is your daily office routine?

Data Vision,

2315

What is difference between Sql server and MySql database? It may be silly question but i really dont know.

2171

Suppose database is running slow, what will you do?

2568

what is scan listener.

2283

Un-Answered Questions { Databases }

What are the two characteristics of a primary key?

1032

What is first normal form in dbms?

1046

How to generate create function script on an existing function?

1179

What is the name of query language used by neo4j?

What is a DBMS, query, SQL?

1095

Why do we need different type of parameter?

1108

List the different types of columns in oracle reports.

1048

What is the rdl file?

141

What are page splits? : sql server architect

950

Which commands you use to lock the database in mongodb?

What is the default port no on which sql server listens? : sql server DBA

1216

In what script is "snap$" created? In what script is the "scott/tiger" schema created?

2497

Where is the mongodb data stored?

What is rowid and rownum in oracle?

1069

What is sql data?

1034

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