Explain how functional dependencies can be used to indicate the following: • A one-to-one relationship set exists between entity sets student and instructor. • A many-to-one relationship set exists between entity setsstudent and instructor.

Explain how functional dependencies can be used to indicate the following: • A one-to-one relationship set exists between entity sets student and instructor. • A many-to-one relationship set exists between entity setsstudent and instructor.

Principles of Information Systems (MindTap Course List)

13th Edition

ISBN:9781305971776

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter5: Database Systems And Big Data

Section: Chapter Questions

Problem 4SAT: The ______________ model is a simple but highly useful way to organize data into collections of...

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Concept explainers

Enhanced ER Model

The enhanced ER model is an abbreviation for Enhanced Entity-Relationship (EER) model. As you know, the entity-relationship (ER) model is a pictorial illustration of the relationship between various entities of a domain. In the case of a large amount of data with multiple interrelated entities, the ER diagrams become complex and tough to interpret. For such cases, the need for enhancement in the ER model was observed, and thus, the EER model was designed.

Question

Explain how functional dependencies can be used to indicate the following:

• A one-to-one relationship set exists between entity sets student and instructor.
• A many-to-one relationship set exists between entity setsstudent and instructor.

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