What is the difference between Conceptual Data Models,Logical Data Models and Physical Data Models?

 Posted by Niladri.Biswas on 9/12/2012 | Category: Design Pattern & Practices Interview questions | Views: 6352 | Points: 40

Conceptual Data Models
Provide a high-level description of data and relatively technology independent specification of the data to be held in the database , including entities and their relationships

Logical Data Models
Describe a logical solution to a data project. The model includes attributes and the individual pieces of information that will be included

Physical Data Models
Describe the implementation of data presented in terms of tables and columns, together with a specification of physical storage (which may include data distribution) and access mechanisms in a physical database

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