====== 16.4 FX Logical Data Structures Remain Distinct from Serialisation Formats ====== [[fxdemo:03-part:16-fx-demo-logical-rules-and-constraints:start | Go To FX Demo Logical Rules and Constraints ]] An FX logical information structure describes FX information meaning, structure, constraints, lineage, governance context, and [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]] expectations of FX information at the platform-independent logical profile level. It does not represent an [[dido:99_annexes:annex-b-terms-and-definitions:i:idl|IDL]] structure, Protocol Buffers message, JSON Schema definition, XML Schema definition, Avro schema, OpenAPI schema, database table, ontology class, generated type, file, or wire-format payload. Implementation profiles select data representation mechanisms that realise FX logical information structures. The selected representation supports implementation, exchange, storage, validation, interpretation, computation, release, or [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|Evidence]] capture. It does not redefine the FX logical information structure. ---- © 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.