Abstract: A market research database includes first and second information sets. The first information set contains first market research information, and the second information set contains second market research information. The market research database also includes a set of dynamic rules. At least one rule of the set of dynamic rules is arranged to respond to first data being entered into the first information set by entering second, different data into the second information set.

Abstract: A market research database includes industry code information containing industry codes (such as UPCs), naked product information containing information about naked products, package information containing information about packages, and product definition information linking naked product information, package information, and industry codes. Accordingly, the storage of information in the database is not dependent upon UPCs or other industry codes, making access to product related information difficult. The use of naked product information, together with the way of identifying products, facilitate a third normal form database.

Abstract: A market research database contains a plurality of sets of product related information. Each set of product related information relates to a corresponding market aspect of products. For example, a set may relate to packages in which products are contained, another set may relate to brand names of products, still another set may relate to business enterprises which package, distribute, or market products, and so on. Each set includes a current layer of product related information, wherein the current layer of product related information is in current time. The product related information in the current layer of each set of product related information includes a control designator. The control designator permits direct access to the current layer of product related information substantially exclusive of other product related information.