Monday 20 August 2012

Entity Relationship Diagram(ERD)

  • 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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