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

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Sybase (267)
DB Architecture (141)
DB Administration (291)

DB Development (113)
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Database Management (1411)
Databases AllOther (288)

Databases Interview Questions

Questions Answers Views Company eMail

hi friends please answer this question ASAP:- how to count the no. of employee in a each department or no. of employee in each location by using emp/dept table

Indecomm,

7 8067

write a sql query following source looking like below column1 column2 101,102,103 abc,def,ghi 1001,1002,1003 a,b,c i want the output column1 column1 101 abc 102 def 103 ghi 1001 a 1002 b 1003 c

KPIT,

1 4445

write sql query following source are EmpID, Salary 101 1000 102 2000 103 3000 I want the output format like following empid,sal,composite_sal 101 1000 1000 102 2000 3000 103 3000 6000

TCS,

4 6867

what is the diffrence between core dba and apps dba?

Cap Gemini,

2510

Display the order number and the number of months since the order was shipped for all orders that have been shipped in the last year (365 days). (Hint: Unshipped orders will have a null value).

1 3844

i have xml source. xml source having lacks of records. i want extract/retrive xml source data using sql query. please tell me how to write query.

TCS,

4 8132

how to get last monday of a month?

Multifonds,

2 6361

Explain the statement?? ALTER TABLE TABLE_NAME MOVE; What it the use of above statement??

BirlaSoft,

1 5788

I just want to maintain data like an employee can belongs to 3 or more departments . We can resolve this by using composite key but it avoids normalization rules. So Can anyone tell me how can I maintain data.

IBM,

2130

i have table T!. A B C D NULL 1 2 3 4 NULL 5 6 7 8 NULL 9 10 11 12 NULL. I WANT COUNT OF NULL VALUES IN TABLE. WRITE A QUERY.

iGate, Wipro,

14 21639

write a query to remove duplicate records without using primary key column?

ABCO,

2 9268

What Is The Difference Between Primary Key & Super Key

Accenture,

3 7313

I have a table Events Events containing cardno,time,id,name--each id has a cardno my requirement is every day each employee swipe the card several times i want to calculate first and last time of each card the output should be name 1 2 6 7 in out in out holiday holiday xxx 09:30 06:30 09:40 06:45 where 1,2...... are dates for example january 1,2, etc. 6 and 7 are saturday and sunday how it is posssible

HCL, Wipro,

2179

I have a table emp. There is only one column in the table. In that , there are only three rows in that column. The value in the first row is 'A' and the value in the second row is 'B' and the third row is 'C'. Now, my question is , How will you write a select query to display the output as B C A Note: order by cannot be used coz it gives us output as CBA. But the output should be BCA.

4 6374

what is d diff between grant,commit,rollback n savepoint

1 8272

Un-Answered Questions { Databases }

What is a primary key called that is made up of more than one field?

1282

What is the powerful database utility that can be used for building, executing and processing queries upon PostgreSQL databases?

1543

Is access faster than excel?

725

Why cursor variables are easier to use than cursors?

1019

What is the easiest database to learn?

839

What do you understand by lov and how can it be used?

1012

What is procedure explain with example?

893

What is normalization and its types?

962

What is mongodb sharding?

How to fine-tune reports?

247

What is a field in a database?

1004

What is the use of stored procedures?

974

What are the types of database model?

1023

Is mysql still popular?

869

Can anybody give me link for BOXI R3.1 Key please

2540

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