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2. Conceptual Modeling using the Entity …
ECS-165A WQ 11152. Conceptual Modeling using theEntity- relationship ModelContents Basic concepts: entities and Entity types, attributes and keys,relationships and relationship types Entity - relationship schema (aka ER diagram) Constraints on relationship types Design choices Enhanced Entity - relationship model features Steps in designing an ER schema Translation of an ER schema to tablesDept. of Computer ScienceUC Davis2. Entity - relationship ModelECS-165A WQ 1116 What does Conceptual Design include?Ideas High-leveldesign Relationaldatabaseschema RelationalDBMS Entity - relationship model is used in the Conceptual design ofa database (+ Conceptual level, Conceptual schema) Designisindependentofallphysicalconsider ations(DBMS, OS.)
ECS-165A WQ’11 15 2. Conceptual Modeling using the Entity-Relationship Model Contents Basic concepts: entities and entity types, attributes and keys,
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