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Basic Concepts of Entity-Relationship Model
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DBMS: Entity-Relationship (ER) Model Topics discussed: 1. Terminologies in relation to the ER Model: a. Entity. b. Attributes: • Composite vs Simple Attributes • Single-valued vs Multivalued Attributes • Derived vs Stored Attributes c. Complex Attributes. d. Null values. e. Entity
DBMS: Entity-Relationship (ER) Model Topics discussed: 1. Terminologies in relation to the ER Model: a. Entity. b. Attributes: • Composite vs Simple Attributes • Single-valued vs Multivalued Attributes • Derived vs Stored Attributes c. Complex Attributes. d. Null values. e. Entity Type, Entity Set. f. Key Attribute & Value Set of Attributes.