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> HELP, KINDLY I NEED ANSWER OF MY QUESTION
MOHIB ULLAH
post Sep 17 2017, 03:08 AM
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WHAT IS THE MEAN OF PF?
IN MY ATTACHMENT I KNOW PK STANDS FOR PRIMARY KEY AND FK STANDS FOR FOREIGN KEY BUT WHAT IS PF?Attached File  customers_and_orders_model.gif ( 70.54K ) Number of downloads: 2

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Attached File  customers_and_orders_model.gif ( 70.54K ) Number of downloads: 2
 
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burleson
post Sep 17 2017, 05:23 AM
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Hi Mohib,

A PB is a case where a column serves as both a PK and a FK.

An example is a fourth normal form relation.


--------------------
Hope this helps . . .

Donald K. Burleson
Oracle Press author
Author of Oracle Tuning: The Definitive Reference
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