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Object-Role Modeling Fundamentals by Terry Halpin

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CSDP Step 7

The previous chapters covered the first six steps of the Conceptual Schema design Procedure (CSDP), in which we verbalized examples of the required information as atomic facts, drew the fact types, performed a population check, checked for object types that should be combined, noted any arithmetic derivation rules, added uniqueness (internal or external) and mandatory role (simple or disjunctive) constraints, noted any logical derivation rules, added any relevant value (object type value or role value) constraints, added any relevant set-comparison (subset, equality or exclusion) constraints, and added any relevant subtyping.

This chapter discusses CSDP Step 7, in which we perform the following tasks:

  • Add frequency constraints

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