What is the cardinality of the following? a. Each student must own a car and can own

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What is the cardinality of the following?

a. Each student must own a car and can own only one car. A car may be owned by only one student.

b. Each student may drive a car and can drive more than one car. A car can be driven by one student and can only be driven by one student.

c. Each student may rent many cars and cars may be rented by many students.

Which of these cardinality rules are optional? Which rules are mandatory? Show these relationships diagrammatically using the Chen-like ER notation.

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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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What is the cardinality of the following? a. Each student must own a car and can own

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Database Design Using Entity Relationship Diagrams

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