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MAINFRAME - TIP OF THE DAY : Q. If there is a situation, where we need to code more than 255 steps in a JOB? A. We need to split jcl into two jcls , at the end of the first jcl check the condition code and initiate the second jcl.

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How to know the Primary and Foriegn keys?

 
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arrbee
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PostPosted: Fri Feb 24, 2006 1:36 pm    Post subject: How to know the Primary and Foriegn keys? Reply with quote

Hi,

It is asked in an interview that how to know the Primary and Foriegn keys of a DB2 Table? As a programmer, we generally don't have the DBA authority to look at the create table?

Is it possible to find out using SPUFI (SELECT * from table;)?

Please suggest.
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pkaushi
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PostPosted: Fri Feb 24, 2006 2:40 pm    Post subject: Reply with quote

Quote:


Hi,

Theres a way to know the referential integrity constarints specified for the tables created by DBA's using the DB2Administration tool. Just type DB2A in teh command line and go browse the table. Give ddl against the table and it will list down teh sql query for the same. There you can find it out.

But if you dont use this tool Sorry will think of other alternative Smile

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Kalicharan
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PostPosted: Mon Mar 13, 2006 7:12 pm    Post subject: Reply with quote

Hi,

With DB2-FileAID also we can find the PRIMARY & FOREIGN keys...

Fron DB2-FileAID,
--> 3.4
--> Mention Object Name & Object Type and select TABLE
--> I command against table (I --> Information)
-->Index Key Information(In this select Unique Key for Primary Key)
--> Related Table Information to get Foreign Key Information

Thanks
Kali
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Kalicharan
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PostPosted: Wed Mar 15, 2006 3:36 pm    Post subject: Reply with quote

Hi,

This another way of knowing Primary Key and Foreign Keys using DB2 SYSDBASE table (SYSIBM)

For Primary Key==>

Select NAME from SYSIBM.SYSCOLUMNS

where TBCREATOR = XXXXX and TBNAME = XXXXX

and KEYSEQ > 0 order by KEYSEQ ASC

For Foreign Keys==>

Select A.REFTBNAME ,COLNAME FROM SYSIBM.SYSFOREIGNKEYS A, SYSIBM.SYSRELS B

WHERE A.RELNAME = B.RELNAME

AND A.TBNAME = XXXXX AND A.REFTBCREATOR = XXXXX

AND A.REFTBCREATOR = B.CREATOR


Thanks
Kali.
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PostPosted: Thu Mar 16, 2006 10:37 am    Post subject: Reply with quote

Thanks Kalicharan. Sadly, we don't have File-Aid for DB2. I will try the other method told by you.

Thanks a lot.
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vijay
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PostPosted: Tue May 09, 2006 5:22 am    Post subject: finding the primar key.... Reply with quote

Kalicharan wrote:
Hi,

This another way of knowing Primary Key and Foreign Keys using DB2 SYSDBASE table (SYSIBM)

For Primary Key==>

Select NAME from SYSIBM.SYSCOLUMNS

where TBCREATOR = XXXXX and TBNAME = XXXXX

and KEYSEQ > 0 order by KEYSEQ ASC

For Foreign Keys==>

Select A.REFTBNAME ,COLNAME FROM SYSIBM.SYSFOREIGNKEYS A, SYSIBM.SYSRELS B

WHERE A.RELNAME = B.RELNAME

AND A.TBNAME = XXXXX AND A.REFTBCREATOR = XXXXX

AND A.REFTBCREATOR = B.CREATOR


Thanks
Kali.




hi kalicharan,

For finding primary key shd i use SYSIBM.SYSKEYS.
I am not sure abt it.will it work?

Thanks
R.Vijay
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