Document Relations
The dictionary contains only a summary description of the relations. The meaning of a relation depends on the context, i.e. the entities which are connected by the relation. Therefore the contextual description of the relations is entered at the model level.
- (1) Double click on the relation in the master model: this will open the edit window for the properties of the selected relation
- (2) The description of the pays-relation: "Payments are paid by 1 Customer. A customer my send many payments. It must be defined for which order the payment has been received. Payments for several orders must be split in individual payments."
- (3) The source (Customer) cardinality of the relation "pays" is "0…*" because a customer can make any number of payments.
- (4) The target (Payment) cardinality of the relation "pays" is "1..1" because a payment can be paid by one (and only one) customer.