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Database Modeling with Microsoft® Visio for Enterprise Architects
book

Database Modeling with Microsoft® Visio for Enterprise Architects

by Terry Halpin, Ken Evans, Pat Hallock, Bill Maclean
September 2003
Intermediate to advanced content levelIntermediate to advanced
425 pages
16h 30m
English
Morgan Kaufmann
Content preview from Database Modeling with Microsoft® Visio for Enterprise Architects
your own. Regardless of how many values are displayed on the diagram, all the values
you enter in the constraint are included for DDL generation purposes.
5.2 Internal and External Uniqueness Constraints
The previous chapter showed how to use the Fact Editor to add uniqueness and manda-
tory role constraints to a single predicate. For these two kinds of internal constraint, the
Fact Editor usually provides the easiest way to add the constraints. All other role-based
constraints are best added and edited using the Add Constraint dialog. Although you
5.2 Internal and External Uniqueness Constraints 99
Figure 5–1 Half-way through adding an {‘M’,’F’} value ...
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Publisher Resources

ISBN: 9781558609198