A relationship between cash receipt and customer for an enterprise has cardinalities (0,1) cash receipt – (0,N) customer. The enterprise creates a cash receipt table and a customer table to represent the entities. To represent the relationship, the enterprise posts the primary key of the customer entity table into the cash receipt entity table. Why is this considered an implementation compromise, and at what level (conceptual, logical, or physical) is it an implementation compromise?

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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A relationship between cash receipt and customer for an enterprise has cardinalities (0,1) cash receipt – (0,N) customer. The enterprise creates a cash receipt table and a customer table to represent the entities. To represent the relationship, the enterprise posts the primary key of the customer entity table into the cash receipt entity table. Why is this considered an implementation compromise, and at what level (conceptual, logical, or physical) is it an implementation compromise?

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