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

how many non clustered index in sql server 2008,2010,2012

Accenture,

2 7048

what is the difference between table and view

1 3214

I have a task regarding access database. I and my organization is using access database to maintain my access files in well mannered way. But due to varied reasons access file showing error message Error 3112: Your access database got corrupted will not be able to show the database. Due to this error message I will not be able to access my access database. I don't have any idea how to recover access database or how to fix access database errors without affecting my original database????? Is there any relevant solution to repair access database?????

1843

plss anybody specify tha constrian management system in dbms

Police Constable,

2082

In table a 1lakh data is present,in table b 20 thousand data is present, to get unique data from table a and b which join to be considered. whether right outer join or left inner join.

GE,

2 5206

I have 2 table A and B. In A 1 lakh record is present. In b 20 thousand data is present. To get the unique data from table A and B which join we should prefer left inner join or right outer join. Please answer.

GE,

4 9718

if table named a is there and 4 records are there then how to swap (1 and 3) and (2 and 4) records at a time

1 3721

The use of LAST_VALUE() AND FIRST_VALUE() with an example

Amazon,

1 4956

.dbf file corrupted Dear Friends, I am using DBF file in Foxpro. DBF file corrupt and show message "Not a database file" Waiting for your reply. With regards!

3 5975

How to genrate automaticlly empid like gt001

4 5557

. have a tablle like this: cust acc ----------- a 1 b 2 b 3 c 4 c 5 c 6 I Want below o/p: cust acc --------------- a 1 b 2|3 c 4|5|6 Please any one can you have any ideas share me. I have urgent requirement. CUST ACC a dv b fg b bh c mk c cl c so result:- A B c dv fg mk bh cl so

3 6203

when normalization is required

HCL,

3 7639

I have a table like this Table Name:Products Productid Price 1 10 1 10 2 20 3 30 3 30 But i want to output like this. productid price 2 20. please replay me.

TCS,

3 5638

I have 2 tables with 1 million rows each. I have updated 1 row in first and 1 million update on second table. Now I commit both the updates. Which one will commit fast and Why?

2574

There are 100 datafiles, numbered from 1 to 100. File number 10 is deleted and it has 500 MB of data. The database is working in archive log mode. How can be the database recovered ? While doing recovery the archive logs applied are from nos 1 to 100, but 50 gets corrupted. What do we do? Can we proceed further? If so how?

2069

Un-Answered Questions { Databases }

Define join and enlist its types.

984

Define master database?

991

What are the types of containers in ssis?

1095

Give a example to search fr a string in all stored procedure in sql server.

915

What is relational database with example?

899

What is scaling in mongodb?

Can sql servers linked to other servers?

976

How to use null as conditions in oracle?

1003

How will you make an attribute not process? : sql server analysis services, ssas

1011

1843

How to avoid using cursors?

1042

Do stored procedures prevent sql injection?

920

What is the difference between multiload and fastload interms of performance?

892

who developed informix?

What is the sql*loader? : aql loader

1006

For More Un-Answered { Databases } Questions Click Here