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Monthly Archives: January 2013
Entity-Relationship Modeling
There are several, really good modeling languages for entity-relationships.
Wikipedia does a good job of cataloging them here.
This is a really quick read on the Barker-Ellis notation.
Of course, you can always just use the universal data model and be done with it
Trial Versions of ERWin Available
You can download a trial version of ER Win from the Computer Associates website here.
http://erwin.com/products/data-modeler/community-edition/
This is a community edition that will let you have up to 25 entities. So, if you have a small data model, this will work.