Logical Data Modeling - Id attribute

1 - About

An id is an label attribute with a numeric representation that identify uniquely an entity or a relationship in a local scope.

versus the name attribute which is the textual counterpart representation

If the id attribute is chosen as the local identifier, it will be:

3 - Identity

If there is no namespace functionality that describe the identifier, the id of an entity describe its identity. <MATH> \Large id+entity = identity </MATH>

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