update backend

models/Categories.js

@@ -17,7 +17,7 @@ const Categories = sequelize.define('Categories', {
   created_at: { type: DataTypes.DATE, allowNull: false, defaultValue: DataTypes.NOW },
   updated_at: { type: DataTypes.DATE, allowNull: false, defaultValue: DataTypes.NOW },
 }, {
-  tableName: 'Categories',
+  tableName: 'categories',
   timestamps: true,
   underscored: true,
   indexes: [

models/Vocab.js

@@ -1,5 +1,6 @@
 const { DataTypes } = require('sequelize');
 const { sequelize } = require('../config/database');
+const Grade = require('./Grade');
 
 const Vocab = sequelize.define('Vocab', {
     vocab_id: {
@@ -36,6 +37,11 @@ const Vocab = sequelize.define('Vocab', {
       defaultValue: '',
       comment: 'Vietnamese meaning'
     },
+    Grade_number: {
+      type: DataTypes.INTEGER,
+      defaultValue: 0,
+      comment: 'Numeric representation of grade unit lesson as GG UU LL for easier querying and sorting'
+    },
     category: {
       type: DataTypes.STRING(100),
       comment: 'Category of the word (e.g., Action Verbs, Nouns)'