What is a model?

Brompheneramine (3-(4-bromophenyl)-N,N-dimethyl-3-pyridin-2-yl-propan-1-amine)

Photo by Flickr user TheIguana, http://www.flickr.com/photos/51035797337@N01/3012247640/ (c)CC-BY 2.0

Data models, slide 2 of 17