DB2 Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

DB2 Interview Questions

Questions Answers Views Company eMail

Could anyone clearly explain the diference between sub query and correlated sub query?

3 5596

which is the most efficient tablespace?? a.simple tablespace. b.partitioned tablespace. c.segmented tablespace. d.none of the above. please post answer with the reason.?

3 6005

db2 maintains information about the data... a.in tables. b.in a set of tables known as db2 catalog. c.in db2 database. d.none of the above.

1 3767

database DSNDB01 means a.db2 catalog b.db2 directory c.BSDS d.active logs answer with reason please

1 5585

WHAT IS NULL INDICATOR ? WERE IS THIS USED? AND IF IT IS USED IN FILES CONCEPT? HOW DO WE USE IT?

IBM,

2 6612

what is cursor stability?

IBM,

2 5835

how do we solve soc 7 and soc4 ?

Tech Mahindra,

3 9966

Hi Dude,this is Ram.could any one tell me aboue CURRENT OF clause in DB2. Thanks in advance.......

2 4828

how to check the table is empty or not?

IBM,

3 11080

what is the difference between where clause and having clause

IBM,

2 8503

In cobol+DB2program if the code of cobol program has changed than i have to do precompilation once again?

TCS,

6 10505

what is utility for parm lib

IBM,

2180

what is parm utility

IBM,

2 4337

what is load and unload in db2

IBM,

1 5682

how to copy the host variables from ps file into cobol program other than include statement

Syntel,

1 7614

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Un-Answered Questions { DB2 }

Define sqlca.

931

How do I connect my db2 database to ibm?

878

What is multi row fetch in db2?

855

What is null value in db2?

841

Explain about mirror activator disk mirroring?

841

What is buffer pool in the db2 database?

933

SET is the ANSI standard for variable assignment, SELECT is not. SET can only assign one variable at a time, SELECT can make multiple assignments at once. If assigning from a query, SET can only assign a scalar value. If the query returns multiple values/rows then SET will raise an error. SELECT will assign one of the values to the variable and hide the fact that multiple values were returned (so you'd likely never know why something was going wrong elsewhere - have fun troubleshooting that one) When assigning from a query if there is no value returned then SET will assign NULL, where SELECT will not make the assignment at all (so the variable will not be changed from it's previous value) As far as speed differences - there are no direct differences between SET and SELECT. However SELECT's ability to make multiple assignments in one shot does give it a slight speed advantage over SET.

2490

What action db2 takes when a program aborts in the middle of a transaction?

962

what is db2 restart?

1986

What is null indicator in cobol db2?

875

What are the different types of base tables?

871

Explain in brief how does db2 determine what lock-size to use?

861

Explain about cursor stability?

867

What is dclgen in db2?

973

How is deadlock resolved?

941

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