diff --git a/models/category.js b/models/category.js
index 8cbd1e1..b9e93c8 100644
--- a/models/category.js
+++ b/models/category.js
@@ -4,14 +4,14 @@ const categorySchema = new mongoose.Schema({
   name: {
     type: String,
     required: true,
-    // unique: true,
+    unique: true,
   },
-  courses: 
+  courses: [
     {
       type: mongoose.Schema.Types.ObjectId,
       ref: "Course",
     },
-  
+  ],
 });
 const Category = new mongoose.model("Category", categorySchema);
 module.exports = Category;
diff --git a/models/course.js b/models/course.js
index 5807f9b..488537d 100644
--- a/models/course.js
+++ b/models/course.js
@@ -1,6 +1,6 @@
 const mongoose = require("mongoose");
 
-// const reviewSchema = require("./review");
+const reviewSchema = require("./review");
 const courseSchema = new mongoose.Schema(
   {
     title: {
@@ -20,17 +20,17 @@ const courseSchema = new mongoose.Schema(
       ref: "User",
     },
 
-    // videos: [
-    //   {
-    //     video: {
-    //       type: mongoose.Schema.Types.ObjectId,
-    //       ref: "Video",
-    //     },
-    //     note: {
-    //       type: String,
-    //     },
-    //   },
-    // ],
+    videos: [
+      {
+        video: {
+          type: mongoose.Schema.Types.ObjectId,
+          ref: "Video",
+        },
+        note: {
+          type: String,
+        },
+      },
+    ],
 
     category: {
       type: String,
@@ -72,7 +72,7 @@ const courseSchema = new mongoose.Schema(
       type: Boolean,
       default: false,
     },
-    // reviews: [reviewSchema],
+    reviews: [reviewSchema],
     weightedRating: {
       type: Number,
       default: 0,