generated from john/python-template
238 lines
8.5 KiB
Markdown
238 lines
8.5 KiB
Markdown
# Data Model and Persistence Schema (Version 4)
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This document is the field-accurate V4 schema contract aligned to `src/transcription/db/models.py`.
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## Source of Truth Anchors
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- `src/transcription/db/models.py:60-78` (status and purpose enums)
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- `src/transcription/db/models.py:80-120` (`DocumentType`, `PersonRole`)
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- `src/transcription/db/models.py:122-207` (`Document`, `Person`, `DocumentPerson`)
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- `src/transcription/db/models.py:208-255` (`Job`)
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- `src/transcription/db/models.py:273-386` (`Source`, `JobSource`)
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- `src/transcription/db/models.py:387-445` (`ExecutionAttempt`)
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## Entity Relationship Overview
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```mermaid
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erDiagram
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DocumentType ||--o{ Document : classifies
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Document ||--o{ Job : has
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Document ||--o{ Source : has
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Document ||--o{ DocumentPerson : links
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Person ||--o{ DocumentPerson : links
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PersonRole ||--o{ DocumentPerson : labels
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Job ||--o{ JobSource : includes
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Source ||--o{ JobSource : participates
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JobSource ||--o{ ExecutionAttempt : attempts
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```
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## Authoritative Enumerations
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### JobStatus
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- `queued`
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- `processing`
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- `transcribed`
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- `partial_success`
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- `failed`
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### JobSourceStatus
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- `pending`
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- `transcribed`
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- `failed`
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- `cancelled`
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### JobPurpose
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- `transcription`
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- `retranscription`
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## Field-Accurate Table Contracts
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### `DocumentType`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `semantic_key` | `str \| None` | nullable unique, indexed |
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| `label` | `str` | required |
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| `normalized_label` | `str` | unique, indexed |
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| `is_active` | `bool` | default `True` |
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| `created_at` | `datetime` | default now |
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| `updated_at` | `datetime` | default now, onupdate |
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### `PersonRole`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `semantic_key` | `str \| None` | nullable unique, indexed |
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| `label` | `str` | required |
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| `normalized_label` | `str` | unique, indexed |
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| `is_active` | `bool` | default `True` |
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| `created_at` | `datetime` | default now |
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| `updated_at` | `datetime` | default now, onupdate |
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### `Document`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `name` | `str` | required |
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| `document_type_id` | `UUID \| None` | FK -> `document_type.id`, indexed |
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| `document_date` | `date \| None` | optional |
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| `document_date_raw` | `str \| None` | optional |
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| `location_created` | `str \| None` | optional |
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| `notes` | `str \| None` | optional |
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| `archive_identifier` | `str \| None` | optional |
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| `created_at` | `datetime` | default now |
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| `updated_at` | `datetime` | default now, onupdate |
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### `Person`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `full_name` | `str` | required |
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| `display_name` | `str \| None` | optional |
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| `maiden_name` | `str \| None` | optional |
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| `birth_date` | `date \| None` | optional |
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| `birth_date_raw` | `str \| None` | optional |
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| `birth_place` | `str \| None` | optional |
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| `death_date` | `date \| None` | optional |
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| `death_date_raw` | `str \| None` | optional |
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| `death_place` | `str \| None` | optional |
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| `biography` | `str \| None` | optional |
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| `portrait_path` | `str \| None` | optional |
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| `family_search_id` | `str \| None` | nullable unique |
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| `metadata_` | `dict[str, JsonValue] \| None` | stored as DB column `metadata` (`JSONBCompat`) |
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| `created_at` | `datetime` | default now |
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| `updated_at` | `datetime` | default now, onupdate |
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### `DocumentPerson`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `document_id` | `UUID` | FK -> `document.id`, indexed |
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| `person_id` | `UUID` | FK -> `person.id`, indexed |
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| `role_id` | `UUID` | FK -> `person_role.id`, indexed |
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| `created_at` | `datetime` | default now |
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| `updated_at` | `datetime` | default now, onupdate |
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Constraint:
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- `UniqueConstraint(document_id, person_id)` named `uq_document_person`
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### `Job`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `document_id` | `UUID` | FK -> `document.id`, indexed |
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| `status` | `JobStatus` | non-null enum (stored as enum values) |
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| `retry_count` | `int` | default `0`, `ge=0` |
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| `purpose` | `JobPurpose` | non-null enum, default `transcription` |
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| `date_created` | `datetime` | default now |
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| `date_updated` | `datetime` | default now, onupdate |
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| `provider` | `str \| None` | optional |
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| `model` | `str \| None` | optional |
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| `prompt_name` | `str \| None` | optional |
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| `prompt_hash` | `str \| None` | optional |
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| `system_prompt` | `str \| None` | optional |
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| `user_prompt` | `str \| None` | optional |
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| `temperature` | `float \| None` | optional |
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| `top_p` | `float \| None` | optional |
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Index:
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- `Index("ix_job_status_date_created", "status", "date_created")`
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### `Source`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `document_id` | `UUID` | FK -> `document.id`, indexed |
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| `page_number` | `int` | default `1`, `ge=1` |
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| `upload_name` | `str` | required |
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| `filename` | `str` | required |
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| `file_path` | `str` | required |
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| `file_hash` | `str` | required |
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| `file_size_bytes` | `int` | `BigInteger`, non-null |
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| `raw_transcription` | `str \| None` | projection field |
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| `preferred_execution_attempt_id` | `UUID \| None` | nullable FK -> `execution_attempt.id`, indexed (`use_alter`) |
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| `revised_text` | `str \| None` | optional human revision |
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| `date_uploaded` | `datetime` | default now |
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| `date_revised` | `datetime \| None` | optional |
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### `JobSource`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `job_id` | `UUID` | FK -> `job.id`, indexed |
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| `source_id` | `UUID` | FK -> `source.id`, indexed |
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| `status` | `JobSourceStatus` | non-null enum, default `pending` |
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Constraint:
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- `UniqueConstraint(job_id, source_id)` named `uq_job_source_job_source`
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### `ExecutionAttempt`
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| Field | Type | Notes |
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| :--- | :--- | :--- |
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| `id` | `UUID` | PK |
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| `job_source_id` | `UUID` | FK -> `job_source.id`, indexed |
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| `job_id` | `UUID` | FK -> `job.id`, indexed |
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| `source_id` | `UUID` | FK -> `source.id`, indexed |
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| `attempt_number` | `int` | `ge=1` |
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| `status` | `JobSourceStatus` | non-null enum, value-stable with `JobSource.status` |
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| `provider` | `str` | required |
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| `model` | `str \| None` | optional |
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| `request_manifest` | `dict[str, JsonValue] \| None` | JSONBCompat |
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| `request_manifest_sha256` | `str \| None` | optional |
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| `request_manifest_schema_version` | `str \| None` | optional |
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| `response_received` | `bool` | default `False` |
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| `transport_status_code` | `int \| None` | optional |
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| `transport_body` | `bytes \| None` | LargeBinary |
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| `transport_content_type` | `str \| None` | optional |
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| `transport_content_encoding` | `str \| None` | optional |
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| `transport_safe_headers` | `dict[str, JsonValue] \| None` | JSONBCompat |
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| `router_request_id` | `str \| None` | optional |
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| `router_generation_id` | `str \| None` | optional |
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| `sdk_response_snapshot` | `dict[str, JsonValue] \| None` | JSONBCompat |
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| `normalized_metadata` | `dict[str, JsonValue] \| None` | JSONBCompat; may include app-namespaced `processing_timing` (`provider_call_duration_ms`, `processing_duration_ms`) |
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| `software_context` | `dict[str, JsonValue] \| None` | JSONBCompat |
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| `raw_transcription` | `str \| None` | optional |
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| `error_category` | `str \| None` | optional |
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| `error_detail` | `str \| None` | optional |
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| `failure_phase` | `str \| None` | optional |
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| `started_at` | `datetime` | required |
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| `finished_at` | `datetime` | required |
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| `duration_ms` | `int` | `ge=0` |
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| `created_at` | `datetime` | default now |
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Constraint:
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- `UniqueConstraint(job_id, source_id, attempt_number)` named `uq_execution_attempt_number`
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## Relationship Loading Contract
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- Most ORM relationships are configured with `lazy="raise"`.
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- `JobSource.execution_attempts` is intentionally `lazy="noload"` with ordered attempts.
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- Service/UI read paths must explicitly eager-load required relationships before access.
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## Persistence Invariants (Ground Truth)
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1. `ExecutionAttempt` is append-only runtime evidence.
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2. `JobSource.status` represents queue/projection execution state and is not a full evidence container.
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3. `Source.raw_transcription` is a mutable projection and not authoritative attempt history.
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4. `Job` terminal status derives from page outcomes (`JobSource` state), not from a separate summary table.
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5. `DocumentType.semantic_key` and `PersonRole.semantic_key` are nullable-unique semantic identifiers.
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## Cross-Reference
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- [System Architecture](architecture_v4.md)
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- [System Requirements](requirements_v4.md)
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- [Error Handling Policy](error_handling_v4.md)
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- [AI Evidence and Provenance Invariant](../invariant/ai_evidence_and_provenance.md)
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