"The world contains entities, processes, locations, people, times, and purposes. Computer systems are filled with bits, bytes, numbers, and the programs that manipulate them. If the computer is to do anything useful, the concrete things in the world must be related to the abstract bits in the computer. Zachman’s framework for information systems architecture (ISA) makes that link. It provides a systematic taxonomy of concepts for relating things in the world to the representations in the computer."