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Data Modeling Made Simple: A Practical Guide for Business and IT Professionals by Steve Hoberman

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CHAPTER 4 What are entities?

Concepts of interestWho, What, When, Where, Why, and HowEntities abound

As I walked around the room to see if any students had questions, I noticed someone in the last row had already finished the exercise. I walked over to where she was sitting and noticed only a handful of boxes on the page. The large box in the center contained the word ‘Manufacturing’. I asked her for her definition of ‘Manufacturing’. “Manufacturing is the production process of how we turn raw materials into finished goods. All the manufacturing steps are in this box.”

The data model boxes (also known as ‘entities’), however, are not designed to represent or contain processes. Instead, they represent the concepts that are used by the processes. ...

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