The Area being Modelled is :-
Subject: Generic Data Model for Retail Management

The Business Rules are as follows :-
1) An Event can be associated with zero or one Customer.
2) An Event can be associated with zero or one Document.
3) An Event can be associated with zero, one or many Organisation Units.
4) An Event can be associated with zero, one or many Products.
5) An Event can be associated with zero or one Supplier.




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