Welcome to the online resource for the Data Model Resource books, CD-ROM, and industry downloads. This is the central location for information about all the electronic products associated with both books, Volume 1 and Volume 2. You can order the Volume 1 CD-ROM (a full unlocked package) direct from Wiley. If you have the Volume 2 book, you may be ready to purchase one or more of the industry downloads. If you'd like to try out a demo first, or just find out more information about books or the author, Len Silverston, click on one of the quick links below.