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 7071

what is the difference between table and view

1 3237

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?????

1854

plss anybody specify tha constrian management system in dbms

Police Constable,

2102

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 5232

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 9768

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 3738

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

Amazon,

1 4978

.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 6005

How to genrate automaticlly empid like gt001

4 5593

. 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 6223

when normalization is required

HCL,

3 7683

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 5656

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?

2584

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?

2081

Un-Answered Questions { Databases }

How to implement if-then-else in a select clause in sybase?

759

How do you structure an access database?

896

How do I add one column in postgresql?

785

What is PL/SQL ?

1936

What is inline table-value user-defined function?

1043

What are stored procedures used for?

972

Which normal form is best?

909

Explain system views?

1035

What is fill factor and pad index?

968

Explain features of analysis services?

942

Explain the use of Merge statement in oracle 11g

989

What is pgadmin 4 written in?

742

What is a table called in database?

930

How do I connect to postgresql remotely?

806

What do you mean by DBMS?

934

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