Data Model

2.1 Data Model Basic Building Blocks

◆ Data Model

◆ Data Models in DBMS are:

◆ Hierarchical Model

◆ Features of a Hierarchical Model

● Advantages of Hierarchical Model

● Disadvantages of Hierarchical Model

◆ Network Model

● Advantages of Network Model

● Disadvantages of Network Model

◆ Entity-Relationship Model

◆ Features of ER Model

◆ Relational Model

◆ Features of Relational Model

● Advnatages of Relational Model

◆ Object-Oriented Data Model



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