Monday, 11 March 2013

Data models

In database designing we have to consider the data model as an important aspect, in this post we are going to see about the data models and its categories.


Data models


The structure of a database is the data model. The data model is a,
    1. Collection of conceptual tools for describing data,
    2. Data relationships,
    3. Data semantics,
    4. Consistency constraints.


Data model provides a way to describe the design of a database at the physical level, logical level and View level (DBMS views).