12.3 Logical Architecture Preserves Conceptual Meaning

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The Logical Architecture / PIM preserves the meaning of the conceptual elements defined in Part 1.

A logical element may specialize, refine, constrain, or relate a conceptual element. It does not redefine the conceptual element. A Logical Node remains a specialization of Node. A logical endpoint remains a specialization of Communication Endpoint. A logical information structure remains a specialization of Data Structure Definition. A logical plane remains a specialization of the Runtime Plane.

Preserving conceptual meaning maintains the architecture’s onion structure. The logical layer builds outward from the conceptual layer rather than replacing it.

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