====== 3.7 Traceability to the Phase 0 Developer Handbook ======

[[fxdemo:04-part:03-traceability-to-parent-and-source-architectures:start | Go To Traceability to Parent and Source Architectures ]]

The Phase 0 Developer Handbook provides the detailed development discipline required before coding begins.

This part identifies the Developer Handbook as a required implementation-control artifact. The handbook defines the coding standards, file-header templates, generated-file markings, naming conventions, logging conventions, exception-handling patterns, repository workflow, review expectations, and other developer rules that implementers follow when producing Phase 0 code and generated artifacts.

The Developer Handbook supports Part 4. It does not replace Part 4. Part 4 defines the implementation profile and the architectural implementation requirements. The Developer Handbook explains how developers apply those requirements consistently.

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**Table 3-7:** Developer Handbook concerns traced from Part 4.
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^ Developer Handbook concern ^ Part 4 relationship ^
| File-header conventions | Support [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|traceability]] from implementation files to logical and implementation artifacts. |
| Generated-file markings | Distinguish generated artifacts from hand-authored artifacts and identify regeneration rules. |
| Coding standards | Preserve implementation consistency across Phase 0 artifacts. |
| Naming conventions | Preserve consistency among logical element names, [[dido:99_annexes:annex-b-terms-and-definitions:d:dds|DDS]] Topic names, [[dido:99_annexes:annex-b-terms-and-definitions:i:idl|IDL]] names, generated types, modules, scripts, and repository paths. |
| Logging conventions | Support Health and Observability, Audit and Provenance, and later [[dido:99_annexes:annex-b-terms-and-definitions:e:evidence|evidence]] planning. |
| Exception-handling patterns | Preserve operational status, processing outcome, audit/provenance context, and recovery expectations. |
| Repository workflow | Supports review, change control, versioning, compatibility, and [[dido:99_annexes:annex-b-terms-and-definitions:t:traceability|traceability]]. |
| Review checklist | Provides a developer-level mechanism to confirm conformance with Part 4 requirements before artifacts are accepted for coding. |

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