- the entity relationship diagram helps show basic data structures in a way that different people can understand.
- There are many different people involved in the database environment, including designers, programmers, managers and end users.
- Not all of these people work with database and might not be as skilled as others, a conceptual model like the ERD helps show the design to many different people in a way they can all understand.
ERD example:
A simple example of an ERD
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