1. A database that is designed and built to serve a specific purpose, such as support the development of a specific process, program, or system. 2. A collection of sentences that (a) are consistent with each other, (b) are consistent with the conceptual schema, and (c) express the propositions that hold for a specific entity world or discourse universe. See also conceptual schema,  conceptual schema language,  database,  discourse universe,  entity world,  process,  proposition,  scene,  sentence,  system.