I don't know the limit of columns making PK.
But I can suggest to use surrogate key and populate it from sequence.

What You will do with your 6 columns if you need a foreign key to this
table?

Gints Plivna




                                                                                       
                             
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Hello Gurus

I just want to know the number of columns that can be combined to make a
primary key(composite).

I have a table with 16 columns of which I would like to make a combination
6
columns as a PK.

The volume of records may be 10,000 or less. This table will be used to
generate a report(thro a screen).

Any suggestions on how to design the table

TIA

Regards
Vishak

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