What is the relationship between a Customer entity and an Order entity, where a customer entry will be present in the Customer entity only if they have made an order?
pg 256 BABOK 10.15 Data Modelling
.3 Relationship or Association
The relationships between entities provide structure for the data model, specifically indicating which entities relate to which others and how. Specifications for a relationship typically indicate the number of minimum and maximum occurrences allowed on each side of that relationship (for example, every customer is related to exactly one sales area, while a sales area may be related to zero, one, or many customers).
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Rabbitsfoot
5 months, 2 weeks ago