12.2 Conceptual Elements Become Logical Elements

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The Logical Architecture / PIM refines conceptual elements into platform-independent logical elements.

For example, Part 1 defines Node as an architectural participant in a distributed Financial System. Part 2 may define Logical Nodes and describe the responsibilities, interactions, and constraints.

Part 1 defines a Communication Endpoint as a point of information exchange used by one or more Nodes. Part 2 may define logical endpoints, endpoint roles, endpoint relationships, and information-flow patterns without selecting a specific communication technology.

Part 1 defines Data Structure Definition as a description of the Structure, Semantics, and constraints of a class of information. Part 2 may define logical information structures, logical message classes, logical event classes, or logical record classes without binding them to IDL, JSON Schema, XML Schema, database schemas, or generated code.