TOC:
Lecture 3
Syllabus:
Syllabus
OBJECT ORIENTED DATA MODEL --
OBJECT ORIENTED DATA MODEL
- OBJECT ORIENTED DATA MODEL(S) TO-DATE ARE CHARACTERIZED BY:
- NO COMMON REFERENCE MODEL
- NO FORMAL FOUNDATION FOR THEM
- NO STANDARD FOR OO MODELS
- DATABASE SYSTEMS REQUIRE A PROPER DATA MODEL - RELY ON CERTAIN GENERALLY ACCEPTED NOTIONS TO FORMULATE A CORE MODEL
- THE CORE MODEL DOES NOT INCLUDE MANY IMPORTANT DATABASE NOTIONS SUCH AS:
- INTEGRITY CONSTRAINTS
- SEMANTIC CONSTRAINTS (RELATIONSHIPS BETWEEN ENTITIES)
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OO Data Model
Ugo O. Gagliardi
GSD-6306 Spring 2003-2004