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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Database Design Using Entity Relationship Diagrams

ISBN: 9781032017181

3rd Edition

Authors: Sikha Saha Bagui, Richard Walsh Earp

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Question Posted: Jan 09, 2024 07:00 AM

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Is it always necessary to have cardinality ratios as well as participation constraints in the same ER

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Database Design Using Entity Relationship Diagrams

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