====== Model ====== [[dido:99_annexes:annex-b-terms-and-definitions:start|Go up to Terms and Definitions]] ===== Discussion ===== A model provides a structured representation of selected aspects of a subject. A model does not reproduce the whole subject. It represents the aspects needed for a defined purpose, such as analysis, specification, communication, validation, implementation, or governance. In the SIP-RA and FX Demo context, a model represents selected [[dido:99_annexes:annex-b-terms-and-definitions:s:structure|structure]], behavior, function, meaning, constraints, relationships, or transformations. Models support separation between conceptual, logical, and platform-specific concerns. A model becomes useful for architectural work when its notation, vocabulary, constraints, and interpretation rules make the represented subject sufficiently clear for review, comparison, mapping, or implementation. ===== Definition ===== *a representation of selected function, structure, behavior, or meaning of a subject for a defined purpose* ===== Source ===== Derived from [[dido:99_annexes:annex-b-terms-and-definitions:m:mda|Model Driven Architecture (MDA)]] usage and [[dido:99_annexes:annex-b-terms-and-definitions:i:iso|ISO]] terminology practice. ===== Note ===== A model differs from an informal diagram in that it uses a language, notation, vocabulary, semantics, or interpretation rules with defined meaning. A diagram without defined meaning for its symbols remains an informal diagram. ===== Example ===== A [[dido:99_annexes:annex-b-terms-and-definitions:p:platform_independent_model|Platform Independent Model (PIM)]] represents selected structure and behavior of a subsystem without specifying the technology platform used to realize the subsystem. ---- © 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.