Foreign key, or relation table mapping?

zokor Nov 11, 2002 4:25 AM

Hi!
I would like to know the difference between choosing foreign key mapping or relation-table mapping, when specifying an ejb-relation in jbosscmp-jdbc.xml deployment descriptor. And also when I must use each mapping.

Thank you very much

1. Re: Foreign key, or relation table mapping?

tdang Nov 12, 2002 7:25 AM (in response to zokor)

Relationships can be mapped using either a foreign key or a separate relation-table. One to one and one to many relationships use the foreign key mapping style by default, and many to many relationships use only the relation-table mapping style.

Take a look in quick start guide at chapter 9.

Hope that helps.
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