Enterprise Model Patterns: Describing the World (UML Version) Review

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Enterprise Model Patterns: Describing the World (UML Version) ReviewI have to say before starting this review, that I played a role in publishing this book and David Hay is a personal friend of mine. However, I am also a data modeling practitioner and trainer and author, and hopefully these qualifications outweigh my subjectivity.
This book is a very important book for the data management industry. With the challenges of having to complete designs in unrealistic timeframes plus the trend in having people that have not been formally trained in data modeling completing some or all of the data modeling activities, there is a need more than ever to have sound data models as a foundation for our applications. This book provides a collection of sound data models for us to use and customize for our projects.
Here are my Top 5 favorite things about this book:
Levels of abstraction. Models can be used and customized at different levels of detail, depending on the analyst's or modeler's needs. There are four levels of modeling abstraction in this book. Level 0 contains the generic information assets and accounting areas, Level 1 contains people and organizations, geography, physical assets, activities and time. Level 2 models specific functional areas within an organization such as HR and marketing, and Level 3 consists of models specific to various industries. The models are extremely comprehensive and well connected. There are over 100 data models provided spanning close to 700 pages of text.
Applicability. I personally benefited from how the book takes real examples such as Highway Maintenance and Banking and connects them to the generic patterns, making them real and easy to apply to our own situations.
UML connection. The book uses the Unified Modeling Language to depict the models and contains a detailed explanation of how to read the UML class diagram and how it relates to relational modeling. Great comparison!
History of data modeling. The book contains a brief explanation of the history of modeling which I found very interesting.
Style of writing. I really like Dave's style of writing. He is selective of every word chosen and maintains consistency and clarity and humor throughout the text.
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