David Hay has been producing data models to support strategic and requirements planning since the mid-1980s. He is the founder and president of Essential Strategies, Inc., a consulting firm dedicated to helping clients define corporate information architecture, identify system requirements and plan strategies for the implementation of new systems. Hay is the author of Data Model Patterns: Conventions of Thought and Requirements Analysis: From Business Views to Architecture. He may be reached at dmr@essentialstrategies.com or by phone at (713) 464-8316.

What Exactly Is A Data Model? Part 3
April 1, 2003 This is the final article of a three-part series that addresses conceptual, logical and physical models, object models and...

What Exactly Is a Data Model? Part 2
March 1, 2003 This is the second of a three-part series of articles that addresses conceptual, logical and physical models, object models...

What Exactly IS a Data Model?
February 1, 2003 This article introduces a three-part series of articles that will address conceptual, logical and physical models, object...

Achieving Buzzword Compliance in Object Orientation, Part 2
March 1, 1999 Last month's article discussed the ways information engineering and the object oriented approach were similar. Part 2...

Achieving Buzzword Compliance in Object Orientation
February 1, 1999 This article is a discussion of those object-oriented concepts which represent simply renamed extensions of information...