O'Reilly logo

Data Modeling Made Simple with CA ERwin Data Modeler r8 by Steve Hoberman, Donna Burbank

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Entities

Concepts of interest

Who, What, When, Where, Why, and How

Entities 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 looking over her shoulder, 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 ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required