July 2010
Intermediate to advanced
976 pages
30h 19m
English
Content preview from Information Modeling and Relational Databases, 2nd Edition
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7.1. Introduction to CSDP Step 7
In previous steps of the CSDP, we verbalized familiar examples in terms of elementary facts, sketched the fact types on a diagram, and then added various constraints and derivation rules. Most applications include uniqueness, mandatory role, value, set-comparison, and subtyping constraints. Although less common, other kinds of constraint may also apply. Some of these have graphic notations. The rest are specified textually. Once all the constraints are specified, some final checks can be made to help ensure that our information model is consistent and free of redundancy. This concludes the basic conceptual schema design procedure.
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CSDP step 7: Add other constraints, and perform final checks |
This chapter deals ...