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ER Diagram

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Hi All,

I am going through ER diagram of a database and found out many tables are not related to each other.

I don't see any foreign key constraint to link the tables together.

I just wanted to know the best practices which are in the industry and wanted improve the current model. Is it okay to have tables without any such keys?

I used the Microsoft Database Diagram which is pretty good to use.

Also, I want to use the Erwin Community Edition and wanted to generate the full ER diagram  based
on current database.

Any suggestions please!

Regards,
Prem


-kccrga http://dbatrend.blogspot.com.au/


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