update

models/VocabMapping.js

@@ -0,0 +1,72 @@
+const { DataTypes } = require('sequelize');
+const { sequelize } = require('../config/database');
+
+const VocabMapping = sequelize.define('VocabMapping', {
+    mapping_id: {
+      type: DataTypes.UUID,
+      defaultValue: DataTypes.UUIDV4,
+      primaryKey: true,
+      comment: 'Unique identifier for curriculum mapping'
+    },
+    vocab_id: {
+      type: DataTypes.UUID,
+      allowNull: false,
+      references: {
+        model: 'vocab',
+        key: 'vocab_id'
+      },
+      onDelete: 'CASCADE',
+      comment: 'Reference to vocabulary entry'
+    },
+    book_id: {
+      type: DataTypes.STRING(100),
+      allowNull: false,
+      comment: 'Book/curriculum identifier (e.g., global-success-1)'
+    },
+    grade: {
+      type: DataTypes.INTEGER,
+      allowNull: false,
+      comment: 'Grade level'
+    },
+    unit: {
+      type: DataTypes.INTEGER,
+      comment: 'Unit number in the book'
+    },
+    lesson: {
+      type: DataTypes.INTEGER,
+      comment: 'Lesson number in the unit'
+    },
+    form_key: {
+      type: DataTypes.STRING(50),
+      comment: 'Which form to use (v1, v_s_es, v_ing, v2, v3, etc.)'
+    },
+    context_note: {
+      type: DataTypes.TEXT,
+      comment: 'Additional context for this mapping'
+    },
+    created_at: {
+      type: DataTypes.DATE,
+      defaultValue: DataTypes.NOW
+    }
+  }, {
+    tableName: 'vocab_mapping',
+    timestamps: true,
+    createdAt: 'created_at',
+    updatedAt: false,
+    indexes: [
+      {
+        name: 'idx_vocab_mapping_vocab',
+        fields: ['vocab_id']
+      },
+      {
+        name: 'idx_vocab_mapping_book_grade',
+        fields: ['book_id', 'grade']
+      },
+      {
+        name: 'idx_vocab_mapping_unit_lesson',
+        fields: ['unit', 'lesson']
+      }
+    ]
+  });
+
+module.exports = VocabMapping;