How to Alter any table to make some fields Composite Primary Key

I need to Alter Table to make some fields Composite Primary Key.
Is it possible to do this ?
Please give any example.
Regards,
AgrawalV

Agrawal
If you are looking for an example to create a composite primary key, here you are.
sql> Alter Table myTable add constraint pk_myTable primary key(col1, col2, ...coln) ;
where
pk_myTable is the name of the primary key constraint,
myTable is the name of the table that you want to create a constraint on and
col1...coln are the column names in the table <myTable)

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Message was edited by:
user589357
Message was edited by:
user589357
Message was edited by:
user589357
Message was edited by:
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Message was edited by:
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Message was edited by:
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I am basically more into Java Programming , with little bit knowledge on Oracle as DataBase .so please excuse for my silly doubts .
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Edited by: user672373773 on Sep 25, 2009 8:54 AM

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http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14251/adfns_indexing.htm#sthref594
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How to Alter any table to make some fields Composite Primary Key

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