Principles of Data Management

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Comparison of the notations

Figure A.7 shows for comparison the different relationship notations used in the Ellis–Barker, Information Engineering, IDEF1X and UML notations. Figure A.8 provides an overall comparison of the notations.

FIGURE A.7 Comparison of the relationship notations

FIGURE A.8 Comparison of the overall data model notations

You will see that IDEF1X gets more ticks than any of the other notations in Figure A.8.One of those is because it provides the ability to use multiple subtyping hierarchies but this is a facility that ...

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