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

Can somebody helps me to arrange these into ascending order depending on their sizes: 1)OLTP 2)ODS 3)DWH 4)DATA MART

Wipro,

2 5894

What is the maximum number of triggers,can apply to a single table?

2 8772

What packages(if any) has oracle provided for use by developers?

1 5735

What's dateware house and what's clustor with practicle example

2140

what's query optimization and without use of IN AND Exist can we get another way data from query

2097

What is tablespace in oracle? how can we create? how is it manage? . . . Thnx 2 All in Advnc....:)

3 5116

Simple example for difference between select and cursor in sql

1 4519

can we drop dual table

Metric Stream,

7 15917

25.67,-1 Trunc = 20 Round= 30 HOW????

Karrox,

2 7619

I want to make a query where I want to eliminate the duplicate rows from the table. For example : Input : Table : NAME Column1 Column2 India USA USA India UK India India UK The desired output that I want to eliminate the duplicates Output India USA UK India Thanks

Sun Life,

2 5156

i have a customer table. trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output. trans_id trans_amt debit_credit_indicator i want get highest credit amount and lowest credit amount and highest debit amount and lowest debit amount for each trans_id.

Oracle,

2 6108

trans_id trans_date trans_amt debit_credit_indicator 001 01-JAN-13 1099 cr 001 12-JAN-13 500 db 002 24-FEB-13 400 db 002 23-MAR-13 345 cr 001 18-APR-13 800 cr 002 15-MAR-13 600 db 001 12-FEB-13 200 cr i want like this output trans_id trans_date trans_amt debit_credit_indicator 001 JAN 1599 cr no.of trans 2 i want trans_id and trans_date like 'JAN' or 'FEB' etc, trans_amt i want all credit amount - debit amount per each trans_id. and debit_credit_indicator and no.of transactions in a month.

Oracle,

1 5286

I Have A Table Like This. Cityno Cityname Mails 1 Bangalore 8km 2 Hsr Layout 20km 3 Mejistic 30km 4 Jayadeva 55km 5 Itpl 80km 6 Hebbal 115km I Have Data Like This I Want O/p Like This Distance No.ofcity 0-50km 3 51-100km 2 101-150km 4 And So On

DELL, HCL, Oracle,

6 13089

3 5986

i have a table like this. cityno cityname mails 1 BANGALORE 8KM 2 HSR LAYOUT 20KM 3 MEJISTIC 30KM 4 JAYADEVA 55KM 5 ITPL 80KM 6 HEBBAL 115KM I HAVE DATA LIKE THIS I WANT O/P LIKE THIS DISTANCE NO.OFCITY 0-50KM 3 51-100KM 2 101-150KM 4 AND SO ON pls give me answer. i want urgent

6 8463

Un-Answered Questions { Databases }

Tell me what is sql profiler?

992

difference between anonymous blocks and sub-programs.

1087

explain the options of myisamchk to improve the performance of a table. : Sql dba

963

What do you mean by an execution plan?

1063

How do I get sql certification?

933

i have windows-xp processor with P4 system. whenever I tried to download foxpro for windows 2.6 on windows XP, my operating system failed to install foxpro for windows 2.6.please. how could i download , install & run foxpro for windows 2.6 easily on windows XP ?

1999

What is an oracle tablespace?

995

First round ------------------- - Procedure - Packages - Views - Virtual tables - Can we use dcl with in function? - Joins and few scenarios - Triggers and its type - Pragma, type and its functionality - How to create db link in oracle - Materialized view - How to find duplicate values from table? - Cursor and its functionality - Write a script to display friday and its date from a entire year. - Exception Handling Second round ------------------------ Gave a scenario like. Need to write a function to perform. When user try to change a password. It must not be last five password and a given password can be combination of characters, symbols, upper and lower case.

1552

What is a transact-sql statement batch in ms sql server?

962

How to use regular expression in pattern match conditions in oracle?

982

What do you mean by cardinality and its types?

894

What is dbms pdf?

1020

How to present flrehird.log file from filling up the disk partition?

What are the sql commands?

1115

What is oracle rownum?

897

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