Overview Of Data Models
What Are Data Models -
Definition 1-
Data Models define how the logical structure of Database in Modelled.
Database are the fundamental entities to introduce Abstraction in DBMS.
Data models define the Data Types, the Constraint and the Relationships for the description or storage of data respectively.
Definition 2: It is a collection of ' concepts and rules' for implementing " abstraction , instance and schemas ".
Various data models are -
- E-R model- Entity Relationship Model
- Relational Model
- Object Oriented Data Model
- Hierarchical Data Model
- Network Data Model
