Yes, that's one way to look at it. At
High-Level Domain Model and
Detailed PDM I show examples of high-level and low-level data models. The issue is the amount of detail that you show. In the essay containing the two examples, I show how you start with high-level requirements and domain models and then evolve your design through six iterations.
- Scott
<a href="http://www-306.ibm.com/software/rational/bios/ambler.html" target="_blank" rel="nofollow">Scott W. Ambler</a><br />Practice Leader Agile Development, IBM Rational<br /> <br />Now available: <a href="http://www.ambysoft.com/books/refactoringDatabases.html" target="_blank" rel="nofollow">Refactoring Databases: Evolutionary Database Design</a>