<systems analysis> 1. A definition of the functions, objects, data,
requirements, relationships and variations in a particular domain.
2. A product of domain analysis which provides a representation of the
requirements of the domain. The domain model identifies and describes the
structure of data, flow of information, functions, constraints and controls
within the Domain that are included in software systems in the domain. The
Domain Model describes commonalities and variabilities among requirements for
software systems in the domain.
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