Re: ER schema versus ER diagram

From: Tobin Harris <>
Date: Thu, 11 Dec 2003 22:59:23 -0000
Message-ID: <brasvb$1ebj2$>

"portroe" <> wrote in message news:br9jco$asj$07$
> 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

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