Re: ER schema versus ER diagram
Date: Thu, 11 Dec 2003 22:59:23 -0000
"portroe" <portroe_at_nospam.com> wrote in message
> If I am asked to 'Design an ER schema for this application, and draw an
> ER diagram for that schema'
When I was studying, I recall that producing a schema entailed documenting:
- Entity Names
- Primary Keys
- Foreign Keys
Producing an ER diagram then meant producing a diagram to represent this. Also, cardinality, optionality and dependencies would need to be shown in the diagram.
HTH Tobes Received on Thu Dec 11 2003 - 23:59:23 CET