Just wanted to announce a series of articles which are now posted online. 1. Agile Data Modeling: Part 1 of 3 (http://www.sdmagazine.com/documents/s=9218/sdm0407g/sdm0407g.html). This article works through an example showing how to take an agile approach to data modeling, working through three iterations of the physical data model for a business application.
4. Agile Data Modeling: From Domain to Physical Modeling (http://www.agiledata.org/essays/agileDataModeling.html). This essay examines the same case study as the articles in Software Development do but goes at it from a different approach, starting with a slim domain model on which both the object schema and data schema would be based. The resulting physical data models are different in the early iterations but soon converge. The differences and implications are interesting.