Modelling

Storing Objects in a Database
Usenet articles on how one can make objects persistent without the code becoming dependent on a specific database technology.
http://ootips.org/persistent-objects.html

Using Object-Oriented Databases: A Step-By-Step Tutorial
Walk through of the development of an OODB application complete with source code. Running example is a phone book application using Java, XML and Objectstore PSE.
http://archive.devx.com/dbzone/articles/sf0701/sf0701-1.asp