Is it always necessary to have cardinality ratios as well as participation constraints in the same ER
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Is it always necessary to have cardinality ratios as well as participation constraints in the same ER diagram? Why? Explain.
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Related Book For
Database Design Using Entity Relationship Diagrams
ISBN: 9781032017181
3rd Edition
Authors: Sikha Saha Bagui, Richard Walsh Earp
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