Diva (Diverse Information Visualisation and Analysis) is the first product of the Glaxo Wellcome/Oxford Molecular/Silicon Graphics collaboration. Diva is a software tool that provides a user-friendly means for chemists and biologists within the pharmaceutical industry to obtain, visualize, and analyze chemical and biological data. There is a flexible interface to obtain data from Thor databases. One assumption in the design is that the user might have very limited knowledge about databases.