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Conceptual, ERD and UML Data Models   
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If you are new to Data Models, this page of my new Tutorial will help you understand the Data Model.

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Preferred by Business Users and
good for early discussions
Preferred by Data Modellers and
other Data Management Professionals
Preferred by O-O Developers - difficult to read and understand by other people
Conceptual Data Model

Conceptual Data Model
ERD Data Model (in ERwin)

ERD Data Model
UML Class Diagram

UML Data Model

Barry Williams
Principal Consultant
Database Answers Ltd.
London, England
July 22nd. 2015


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