4.5 Explicit Information Structures

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The Logical Architecture defines information exchange through logical Data Structure Definitions and logical Data Structure Instances.

Logical Data Structure Definitions identify the structure, meaning, and constraints of information classes at the PIM level. Logical Data Structure Instances represent populated occurrences that Nodes exchange, record, interpret, validate, or use as Evidence.

The Logical Architecture does not prescribe IDL, Protocol Buffers, JSON Schema, XML Schema, Avro, OpenAPI, database schemas, ontology classes, or generated language types. Later implementation profiles select those representations.

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