Databases Reference
In-Depth Information
cussing each part thoroughly, until completing the page. Then build up the
next drawing in the same way.
Where you have intersect entities, always present the reference entities
first. There may even be a slide showing a many-to-many relationship. Dis-
cuss the need for attributes that apply to each occurrence of a pair. Then
present the slide with the intersect entity.
In doing the presentation, be sure to have a marking pen handy. It will be
amazing how quickly the audience becomes so involved that it tells you
where the model is wrong. Listen. Where it is wrong (and it will be wrong),
mark up the slide to demonstrate that someone is listening.
Notes
1. Thomas A. Bruce,
Designing Quality Databases: Practical Information Management &
IDEF1X,
New York:Dorset House Publishing, 1992.
2. Richard Barker,
CASE*Method Entity Relationship Modelling.
Wokingham, England:Addi-
son-Wesley Publishing Company, 1990.
3. Ed Downs, Peter Clare, and Ian Coe,
Structured Systems Analysis and Design Method.
Engle-
wood Cliffs, NJ:Prentice-Hall, Inc., 1988).
4. James Martin and James J. Odell,
Object-oriented Methods.
Englewood Cliffs, NJ:PTR Pren-
tice-Hall, Inc., 1995.
5. James Rumbaugh, Michael Blaha, William Premerlani, Frederick Eddy, and William Lorens-
en,
Object-oriented Modeling and Design.
Englewood Cliffs, NJ: Prentice-Hall, Inc., 1991.
6. Sally Shlaer and Stephen J. Mellor,
Object-oriented Systems Analysis: Modeling the World in
Data.
Englewood Cliffs, NJ:Prentice-Hall, Inc., 1988.
7. David W. Embley, Barry D. Kurtz, and Scott N. Woodfield,
Object-oriented Systems Analysis:
A Model Driven Approach.
Englewood Cliffs, NJ:Yourdon Press, 1992.
8. Edward Yourdon and Peter Coad,
Object-oriented Analysis.
Englewood Cliffs, NJ:Prentice-
Hall, Inc., 1990.
9. Terry Halpin,
Conceptual Schema & Relational Database Design.
Sydney:Prentice-Hall Aus-
tralia, 1995.
10. This example is from Chen,
op cit,
pp. 17-20
11. Tufte,
op. cit.
Search WWH ::
Custom Search