内容出自本地一本书名 "Database Management"
Data Models 现有5种:
1. Hierarchical data model
2. Network data model
3. Relational data model (RDBMS)
4. Multidimensional data model
5. Object-oriented data model (OODBMS)
RDBMS 是这样:
TABLE: Phone
Record, Field1: Contact, Field2: Phone
1,ANDY, 012-3456789
2,ARRON, 013-9876543
3,BENJAMIN, 016-6666666
OODBMS 是这样:
Object's Class: Phone
Object's Attribute: Contact, Phone
Object's Behaviors: Initialize, Modify, Insert, Delete |