How to Draw Entity Relationship Diagrams (ERDs) | Gliffy by Perforce

SOLVED: 0.3.3Identify four entities from the case study and draw an Entity Relationship Diagram (ERD) using the correct cardinality symbols to present the relationships amongst the entities: You donot have to include attributes for any of the entities0.3.4Current approaches to system development use domain classes instead of entities Name a diagram that can be used instead of an ERD.(1)

SOLVED: 2. Develop an extended entity-relationship diagram (EERD) that illustrates the relational database design described by the business rules in #1. The diagram should include the primary key of each table in order to demonstrate correct implementation of specialization-generalization. While EERDs may well contain other attributes, in this assignment, you need not include them because they are not described in the business rules. You should use legal database identifiers such as SitDownResta

What is the Entity-Relationship Model? - Diagram & Examples

Generalization, Specialization and Aggregation in ER Model - GeeksforGeeks