1. domain calculus A form of relational calculus in which scalar variables take values drawn from a given domain. Examples of the domain calculus are ILL, FQL, DEDUCE and the well known Query By Example QBE. INGRES is a relational DBMS whose DML is based on the relational calculus. domain engineering analysis> 1. The development and evolution of domain specific knowledge and artifacts to support the development and evolution of systems in the domain. Domain engineering includes engineering of domain models, components, methods and tools and may also include asset management. 2. The engineering process of analysing and modelling a domain, designing and modelling a generic solution architecture for a product line within that domain, implementing and using reusable components of that architecture and maintaining and evolving the domain, architecture and implementation models. 3. A reuse-based approach to defining the scope domain definition, specifying the structure domain architecture and building the Assets requirements, designs, software code, documentation for a class of systems, subsystems or applications. Domain engineering can include domain definition, domain analysis, developing the domain architecture domain implementation. domainist /doh-maynist/ 1. Said of a domain address as opposed to a bang path because the part to the right of the "@" specifies a nested series of "domains"; for example, esr@snark. thyrsus. com specifies the machine called snark in the subdomain called thyrsus within the top-level domain called com. See also big-endian. 2. Said of a site, mailer or routing program which knows how to handle domainist addresses. 3. Said of a person especially a site admin who prefers domain addressing, supports a domainist mailer, or proselytises for domainist addressing and disdains bang paths. This term is now 1993 semi-obsolete, as most sites have converted. [Jargon File]
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