- The Descriptive Prefix can be important in differentiating between inherited elements if there is more than one relationship between the two entities.
- If an element is inherited more than once by an entity, its field name must be unique within the entity.
- When you move the included attributes in the Customer entity, they are moved as a group of attributes.
Tips and Techniques
- If you think you may have created an element in the wrong entity, do not worry as you can transfer it to another entity at a later stage.
- Change the default descriptors for a relationship to something more meaningful to the nature of the relationship between the two entities.
- To resequence the order of the address elements, you must work with the Address entity. If the element order is changed in the Address entity, the order will also be updated in the Customer entity.
- The Address conceptual entity will ensure that all addresses have the same format. If you change the format of the postal code, it needs to be done in only one place in the complete model and all entities will be updated.
What I Should Know
- How to create a conceptual entity.
- How to transfer elements between entities.
- How to create an Includes relationship between two entities.
- The importance of the Descriptive Prefix when creating multiple relationships between the same entities.
- When to change the field name of inherited elements.