COMPUTER APPLICATIONS
DATABASE MANAGEMENT SYSTEMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The relationship between two entities can be given using the lower and upper limits.This information is called____
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Cardinality
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Composite entity
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Optional relationships
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Business rules
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Explanation:
Detailed explanation-1: -The cardinality of a relationship is the number of related rows for each of the two objects in the relationship. The rows are related by the expression of the relationship; this expression usually refers to the primary and foreign keys of the underlying tables.
Detailed explanation-2: -In a database, cardinality usually represents the relationship between the data in two different tables by highlighting how many times a specific entity occurs in comparison to another.
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