We have a Conceptual Data Model without Families, a Physical Data Model, and a Dezign Data Model, Email me if you would like an Access Database. You can check out the FACTs or Business Rules which the Data Model must comply with. I always look for published standards in any area I am working in. Here's a link to the GENTECH Genealogical Data Model, published by the not-for-profit National Genealogical Society. If you want more,examples, simply Google for 'genealogy data model'. And here's a useful site called Genes Reunited, if you are searching for relatives.

Barry Williams
Principal Consultant
Database Answers