Definition Layer

Views Updated: Dec 15, 2025

Abbreviation

Pronunciation

/ˌdɛfəˈnɪʃən leɪər/

DDR architecture pattern composes of display layer, definition layer and realization layer.
Finally the thesis establishes a practical simulation environment of manufacturability, implements dynamic simulation of SMT. He implements the system in three layers : first, in the semantic definition layer, it establishes the data structure construct and semantic model;
Definition layer is the core of DDR architecture pattern, it envelops changeable system inner elements, which normally express with meta-object, and the set of all meta-objects composes the data dictionary of definition layer.
The system is composed of the multimedia data access layer, the multimedia data definition layer, the multimedia data re-presentation layer and the application layer.
In view of the definition layer, the configuration layer and the process element layer of the SCOR of Sichuan salt industry supply chain in the emergency situation, the emergency response proposals and measures were proposed respectively.

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