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Data Modeling Made Simple with ER/Studio Data Architect by Steve Hoberman

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A data model is a wayfinding tool for both business and data professionals, which uses a set of symbols and text to precisely explain a subset of real information to improve communication within the organization and thereby lead to a more flexible and stable application environment. A line represents a motorway on a map of France. A box with the word Customer within it represents the concept of a real Customer, such as Bob, IBM, or Walmart on a data model.

Our broad definition of a data model as a set of symbols and text which precisely explain a subset of real information encompasses models in many different forms. Data models can look like the box and line drawings that are the subject of this book, ...

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