Let’s start by working with the sample model provided with the installation of CA ERwin Data Modeler, called eMovies. This model is built around a fictitious movie rental company, and provides a good ‘real-world’ example of the implementation of model design layers, diagrams, subject areas, and many other features that we’ve discussed already or will introduce in future sections. If you don’t have a copy of CA ERwin Data Modeler available, you can download a free Community Edition at www.erwin.com to get started with your learning process. Don’t worry if you don’t know how to data model yet. Open up the product, walk through the sample model provided, and experiment with building some test models ...

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