What exactly does it mean to be a "weak entity type"? Do you know the trick? What exactly does the word "attribute" mean?What does an ER chart look like for sia? If possible, a schematic would be helpful.

What exactly does it mean to be a "weak entity type"? Do you know the trick? What exactly does the word "attribute" mean?What does an ER chart look like for sia? If possible, a schematic would be helpful.

Principles of Information Systems (MindTap Course List)

12th Edition

ISBN:9781285867168

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter12: Systems Development: Investigation, Analysis, And Design

Section: Chapter Questions

Problem 12SAT: Data modeling is most often accomplished through the use of a(n) __________________. a....

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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.

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