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#81 cardinality properties

under exam
closed
None
5
2013-12-24
2012-05-24
Stefan Houtzager
No

I'm missing some cardinalities. A relationship can be optional on both sides, optional on one side and mandatory on the other, or mandatory on both sides.
For example order 1..* ------ 0..* item.
left: an order is about one or more items (zero not possible -> mandatory)
right: an item does not have to be on an order, but there can be more than one on an order
Maybe some inspiration to enhance the possibilities are found on
http://www.isqa.unomaha.edu/wolcott/tutorials/erwin/ERwin.html

Regards, Stefan.

Discussion

  • Sorry, I withdraw this request. The cardinalities are complete, I have seen the relation properties window now. Great!!

     
    • status: open --> closed
    • assigned_to: Hiroyuki Nakajima
    • Group: --> under exam