Databases Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Databases Interview Questions

Questions Answers Views Company eMail

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

Accenture,

2 7170

what is the difference between table and view

1 3299

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?????

1890

plss anybody specify tha constrian management system in dbms

Police Constable,

2151

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 5329

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 9946

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 3805

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

Amazon,

1 5043

.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 6135

How to genrate automaticlly empid like gt001

4 5722

. 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 6351

when normalization is required

HCL,

3 7792

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 5801

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?

2620

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?

2122

Un-Answered Questions { Databases }

Explain what is cte (common table expression)?

1131

how to do daily transactions with out sql* loader control file regesterd in apps?

1687

What is the use of mysqli_connect in php?

902

What are two difference between sql azure and azure tables?

159

How to get the number of affected rows?

1006

Can you explain different types of joins?

935

What is the maximum rows in csv?

920

What is command parameter in ssrs?

161

What is not null in mysql?

998

How can I see all tables in sql?

1077

How do you enter data in pgadmin4?

855

what are the tools used for oracle 10g in real time.

2441

Are stored procedures faster than dynamic sql?

1040

Explain ranking functions?

1047

How do we display rows from the table without duplicates?

972

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