course has a code, course name, credits, and an instructor. Each course uses a textbook. • A textbook has ISBN, name, publisher, editor, and authors. Your ER diagram should have entities, attributes, composite attribute

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A: A supertype is a generic entity type that has a relationship with at least one subtypes.  A subtype…

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A: As per our guidelines, we are supposed to answer only 1st three parts. Kindly repost the remaining…

Q: A company makes items. Each item has a name, ID and component quantity. Every item contains many…

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Q: Can you please help me with real answers ?

A: This is a different and CORRECT solution by me from the previous one posted by someone. You should…

Q: Entity-Relationship Diagram (ERD) is one of the data modeling tools that provides a software…

A:

Q: OO questions Create the UML diagram for the two entities( person, books). A person has borrowed…

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Q: Q1. ER Model . Create an ER Model for the following: A customer (eg. Tom) may (or may not) give…

A:

Q: Examine the following entity relationship diagram, and select all statements that correctly describe…

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A: ERD with crow's feet notation in 3NF is as follows :

Q: Draw an Entity Relationship Diagram for all of those below. Draw an ER diagram to represent…

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A: Required attribute is an attribute that must have a value in it. hence, it can not be left empty.

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Q: PLZ help with the following: Create a Crow’s Foot ERD. Draw YOUR entity relationship diagram (ERD)…

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A: - We need to talk about the ERD diagram provided.

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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.