coding ist out :-) (In that case others have already done the work)
The world needs productivity!

Do know Microsoft Access?
Age-old but still useful! http://en.wikipedia.org/wiki/Microsoft_Access
1. create table
2. create references
3. create logic
4. done

Imagine this in the web
1. Additional fields with CCK http://drupal.org/project/cck
2. Lists, pages, blocks, feeds with VIEWS http://drupal.org/project/views
3. Theming (How do I theme a view, a node, a panel?)
4. Different Layouts with Panels http://drupal.org/project/panels

I will show an example and many, many useful modules

The photo above is with a CC license - thank you -> http://www.flickr.com/photos/abnelgonzalez/2058764760/