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Data Model for a Customer Master Index   
We would be glad to have your comments.

I show two designs here for my post November-27 work which shows my first thoughts on combining Customer IDs and Tags.
Number 1 is a Conceptual Data Model and number 2 is a Logical Data Model.

Design number 1 - Conceptual Data Model.

Design number 2 - Logical Data Model.

Conceptual Data Model

Barry Williams
Principal Consultant
Database Answers Ltd.
London, England
November 28th. 2017

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