Thursday, January 02, 2014
Baseline Conceptual Models: Party Model
Note 1: In this model Contact Points only can exist if they are associated with a party. But if you are a postal service the address is important all on its own and can exist without a party. So you will need to make the necessary modifications. But that usually is a corner case from my experience.
Note 2: This model demonstrates role naming: Person ID from the Human Resource Entity is really a role name for a Party ID from the Party Entity. Organization ID from the Human Resource Entity is really a role name for a Party ID from the Party Entity.
Note 3: You will notice that the Human Resource Contact Point Entity has a suggested Primary Key of Organization ID, Person ID, Contact ID in which Person ID is BOLD. Person ID is an example of key folding in which the Party ID from Contact Point folds into Person ID from the Human Resource Entity. I personally like to call this a data harmonic. Hope that helps you understanding some advanced modeling techniques that are demonstrated in this model.
Please see (Baseline Conceptual Models Commentary) for further details on what conceptual models are to be used for.