690514:2019 204-rfa-approval-refactor #01

docs/ai-knowledge-base/templates/db-migration.md

@@ -0,0 +1,42 @@
+// File: docs/ai-knowledge-base/templates/db-migration.md
+# Database Change Script (SQL Delta)
+
+## 📋 Metadata
+- **Feature**: [Feature Name]
+- **Requested By**: [Name]
+- **Date**: [YYYY-MM-DD]
+- **Risk Level**: Low / Medium / High
+
+## 🏗️ SQL Script (ADR-009 Standard)
+```sql
+-- Purpose: [Add new column/table for feature X]
+-- Target Table: [table_name]
+
+-- 1. Create Table (if new)
+CREATE TABLE IF NOT EXISTS `table_name` (
+    `id` INT AUTO_INCREMENT PRIMARY KEY,
+    `publicId` BINARY(16) NOT NULL UNIQUE,
+    -- Custom fields...
+    `version` INT DEFAULT 1,
+    `createdAt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    `updatedAt` TIMESTAMP DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+    `createdBy` INT,
+    `updatedBy` INT
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
+
+-- 2. Alter Table (if existing)
+-- ALTER TABLE `table_name` ADD COLUMN `new_field` VARCHAR(255);
+
+-- 3. Add Indexes
+-- CREATE INDEX `idx_table_field` ON `table_name` (`field`);
+```
+
+## 🆘 Rollback Script
+```sql
+-- DROP TABLE IF EXISTS `table_name`;
+-- ALTER TABLE `table_name` DROP COLUMN `new_field`;
+```
+
+---
+// Change Log:
+// - 2026-05-14: Initial SQL delta template based on ADR-009