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Workstream E: VS-02 Data Governance Policy #26

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kjh2064 merged 1 commits from feat/E-vs02-data-governance into main 2026-08-07 17:18:35 +09:00
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Workstream E: VS-02 Data Governance Policy (Formal Framework)

Summary

  • Governance Framework: Formal data governance for financial security master
  • Daily Operations: Import schedule (16:30-19:00 KST), fallback procedures
  • Quality Assurance: Validation rules, reconciliation procedures
  • Audit Trail: Append-only revisions with PIT tracking
  • Risk Management: 5 risk scenarios with mitigation

Deliverables

1. VS-02-SLICE_SPEC.md (Updated)

  • Status: DRAFT → COMPLETE (all unknowns resolved)
  • Added: 4 resolved unknowns section
  • References: D's source-catalog.md results
  • Details:
    • ✅ KRX data source endpoint
    • ✅ Import SLA (Daily T+0, <4 hours)
    • ✅ Audit/correction policy (append-only)
    • ✅ Schema versioning (PIT tracking)

2. VS-02_DATA_GOVERNANCE_POLICY.md (1.0 COMPLETE, 246 lines)

Sections:

  1. Data Source Authority

    • KRX OpenAPI as authoritative source
    • SLA: 99.5% availability
    • Import window: 16:30-19:00 KST (daily)

  2. Import & Refresh Procedure

    • Daily schedule with fallback to LKG cache
    • Error handling: API down >4 hours → use cached data
    • Notification: Outbox event on import success/failure

  3. Data Quality Rules

    • Schema completeness validation
    • Business logic validation (no future dates)
    • Reconciliation: Imported vs expected row counts

  4. Audit & Correction Handling

    • Immutable revisions (INSERT-only)
    • PIT tracking (published_at + revision)
    • Correction notifications via Outbox/Inbox

  5. Governance Checkpoints

    • Pre-implementation: Schema approved ✅
    • Post-merge: Monitoring + SLA tracking
    • Risk: API failures, data quality issues

  6. Risk Mitigation

    • API outage: Fallback to LKG cache (4-hour tolerance)
    • Data quality: Validation rules + reconciliation
    • Schedule failure: Retry with exponential backoff

Unknowns Resolved

  1. ✅ Data Source: KRX OpenAPI (from D)
  2. ✅ Refresh Frequency & SLA: Daily T+0, <4 hours (from D)
  3. ✅ Audit & Correction: Append-only revisions (from D)
  4. ✅ Schema Versioning: PIT tracking (defined in policy)

Impact

Enables:

  • VS-02 implementation (all governance unknowns cleared)
  • F's VS-03/04 design (references this governance foundation)
  • Phase 2 implementation (data governance ready)

Testing

  • SLA calculations verified
  • Fallback procedures documented
  • Reconciliation rules defined
  • Risk scenarios validated

Related

  • Depends on: Workstream D (source-catalog)
  • Feeds into: Workstream F (approval/audit), Phase 2 implementation
  • Enables: VS-02 slice implementation

Generated with Claude Code 🤖

## Workstream E: VS-02 Data Governance Policy (Formal Framework) ### Summary - **Governance Framework:** Formal data governance for financial security master - **Daily Operations:** Import schedule (16:30-19:00 KST), fallback procedures - **Quality Assurance:** Validation rules, reconciliation procedures - **Audit Trail:** Append-only revisions with PIT tracking - **Risk Management:** 5 risk scenarios with mitigation ### Deliverables #### 1. VS-02-SLICE_SPEC.md (Updated) - Status: DRAFT → **COMPLETE** (all unknowns resolved) - Added: 4 resolved unknowns section - References: D's source-catalog.md results - Details: - ✅ KRX data source endpoint - ✅ Import SLA (Daily T+0, <4 hours) - ✅ Audit/correction policy (append-only) - ✅ Schema versioning (PIT tracking) #### 2. VS-02_DATA_GOVERNANCE_POLICY.md (1.0 COMPLETE, 246 lines) **Sections:** 1. **Data Source Authority** - KRX OpenAPI as authoritative source - SLA: 99.5% availability - Import window: 16:30-19:00 KST (daily) 2. **Import & Refresh Procedure** - Daily schedule with fallback to LKG cache - Error handling: API down >4 hours → use cached data - Notification: Outbox event on import success/failure 3. **Data Quality Rules** - Schema completeness validation - Business logic validation (no future dates) - Reconciliation: Imported vs expected row counts 4. **Audit & Correction Handling** - Immutable revisions (INSERT-only) - PIT tracking (published_at + revision) - Correction notifications via Outbox/Inbox 5. **Governance Checkpoints** - Pre-implementation: Schema approved ✅ - Post-merge: Monitoring + SLA tracking - Risk: API failures, data quality issues 6. **Risk Mitigation** - API outage: Fallback to LKG cache (4-hour tolerance) - Data quality: Validation rules + reconciliation - Schedule failure: Retry with exponential backoff ### Unknowns Resolved 1. ✅ **Data Source:** KRX OpenAPI (from D) 2. ✅ **Refresh Frequency & SLA:** Daily T+0, <4 hours (from D) 3. ✅ **Audit & Correction:** Append-only revisions (from D) 4. ✅ **Schema Versioning:** PIT tracking (defined in policy) ### Impact **Enables:** - VS-02 implementation (all governance unknowns cleared) - F's VS-03/04 design (references this governance foundation) - Phase 2 implementation (data governance ready) ### Testing - [x] SLA calculations verified - [x] Fallback procedures documented - [x] Reconciliation rules defined - [x] Risk scenarios validated ### Related - Depends on: Workstream D (source-catalog) - Feeds into: Workstream F (approval/audit), Phase 2 implementation - Enables: VS-02 slice implementation --- **Generated with Claude Code** 🤖
kjh2064 added 1 commit 2026-08-07 17:10:00 +09:00
feat(E-VS-02): resolve data governance unknowns with formal policy f1219ca3cd 
Updates:
- VS-02-SLICE_SPEC.md: Status DRAFT → COMPLETE (all unknowns resolved)
- NEW: VS-02_DATA_GOVERNANCE_POLICY.md (1.0 complete governance framework)

Unknowns Resolved (by AEG-X-009):
✅ Data source: KRX OpenAPI endpoints confirmed (source-catalog.md v2.0)
✅ Import SLA: Daily T+0, <4 hours, 99.5% availability
✅ Audit policy: Append-only revisions, Outbox/Inbox notifications
✅ Error handling: Transient retry (exponential backoff), permanent quarantine, fallback (LKG cache)

Governance Framework:
• Daily import procedure (16:30-19:00 KST)
• Fallback procedure (API down → use LKG cache, max 1 day old)
• Data quality rules (schema completeness, business logic validation)
• Audit & correction handling (immutable revisions, PIT tracking)
• Compliance requirements (5-year retention, FSS audit trail)
• Risk mitigation (cascade failures, correction propagation, duplicate detection)

Enables:
→ VS-02 implementation ready (all governance unknowns cleared)
→ F: VS-03/04 design can reference finalized governance
→ Phase 2: No data governance blockers

AGENTS.md v16.0: 13/13 criteria ✅

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>
kjh2064 merged commit aef5a5831d into main 2026-08-07 17:18:35 +09:00
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Reference: kjh2064/KArtSell.Aegis#26
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