====== 20.4 IDL Structures Do Not Redefine Logical Information Structures ======

[[fxdemo:04-part:start | Go To Top ]]

[[fxdemo:04-part:20-phase-0-implementation-rules-and-constraints:start | Return to Phase 0 Implementation Rules and Constraints ]]

An [[dido:99_annexes:annex-b-terms-and-definitions:i:idl|IDL]] structure realises an FX logical information structure for the selected Phase 0 implementation context.

The IDL structure defines the implementation-level [[dido:99_annexes:annex-b-terms-and-definitions:d:data|Data]] representation used by [[dido:99_annexes:annex-b-terms-and-definitions:d:dds|DDS]] and generated type tooling. It does not redefine the meaning, logical constraints, lineage expectations, governance context, [[dido:99_annexes:annex-b-terms-and-definitions:r:runtime_plane|Runtime Plane]] classification, or [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|Traceability]] expectations of the FX logical information structure.

The FX logical information structure remains the authoritative logical definition. The IDL structure provides a selected Phase 0 representation.

<WRAP centeralign>

© 2026 Dido Solutions, Inc. and Jackrabbit Consulting, Inc.

</WRAP>