Declarationsbased
Declarationsbased is a design and development approach that emphasizes constructing software systems primarily around declarations—statements that specify desired properties, constraints, or outcomes—rather than explicit procedural steps. In a declarationsbased paradigm, the system's behavior is derived by a declarative engine (such as a constraint solver, rule engine, or data validator) that ensures the declared conditions hold, leaving the how to implementers or the engine.
Key ideas include separating what is intended from how it is achieved. Interfaces specify declarations; implementations
Common features encompass declarative syntax, automatic inference or validation, and a strong emphasis on data models
Applications span configuration management and infrastructure as code, data validation schemas, policy and compliance rules, business
History notes that the term appears in limited technical discussions and some industry blogs to describe a
See also: Declarative programming, constraint programming, rule engines, model-driven engineering, configuration as code.