diff --git a/models/cart.js b/models/cart.js
new file mode 100644
index 0000000..f4096fa
--- /dev/null
+++ b/models/cart.js
@@ -0,0 +1,13 @@
+const mongoose = require('mongoose')
+const cartSchema = new mongoose.Schema({
+    userId: {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "User",
+    },
+    courseId:{
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "Course",
+    }
+})
+const cart = new mongoose.model("cart", cartSchema)
+module.exports = cart;
diff --git a/models/category.js b/models/category.js
index b9e93c8..8cbd1e1 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/completedCourse.js b/models/completedCourse.js
new file mode 100644
index 0000000..5515cc6
--- /dev/null
+++ b/models/completedCourse.js
@@ -0,0 +1,14 @@
+const mongoose = require("mongoose")
+const completedCourseSchema = new mongoose.Schema({
+    userId: {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "User",
+
+    },
+    courseId: {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "Course",
+    },
+})
+const completedCourse = new mongoose.model("completedCourse", completedCourseSchema)    
+module.exports = completedCourse;
\ No newline at end of file
diff --git a/models/completedVideo.js b/models/completedVideo.js
new file mode 100644
index 0000000..5f08b76
--- /dev/null
+++ b/models/completedVideo.js
@@ -0,0 +1,19 @@
+const mongoose = require("mongoose")
+const completedVideoSchema = new mongoose.Schema({
+    userId: {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "User",
+
+    },
+    courseId: {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "Course",
+    
+    },
+    videoId: {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "Video",
+    },
+})
+const completedVideo = new mongoose.model("completedVideo", completedVideoSchema)
+module.exports = completedVideo;
\ No newline at end of file
diff --git a/models/course.js b/models/course.js
index c3eca7c..5807f9b 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,
@@ -62,17 +62,17 @@ const courseSchema = new mongoose.Schema(
       type: Number,
       default: 0,
     },
-    preview: [
+    preview: 
       {
         type: mongoose.Schema.Types.ObjectId,
         ref: "Video",
       },
-    ],
+    
     isPublished: {
       type: Boolean,
       default: false,
     },
-    reviews: [reviewSchema],
+    // reviews: [reviewSchema],
     weightedRating: {
       type: Number,
       default: 0,
diff --git a/models/createdCourse.js b/models/createdCourse.js
new file mode 100644
index 0000000..6994629
--- /dev/null
+++ b/models/createdCourse.js
@@ -0,0 +1,14 @@
+const mongoose = require("mongoose")
+const createdCoursesSchema = new mongoose.Schema({
+    userId: {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "User",
+    },
+    courseId: {
+        type: mongoose.Schema.Types.ObjectId,
+        ref: "Course",
+    },
+
+})
+const createdCourse = new mongoose.model("createdCourse", createdCoursesSchema)
+module.exports = createdCourse;
\ No newline at end of file
diff --git a/models/ownedCourse.js b/models/ownedCourse.js
new file mode 100644
index 0000000..686d9a0
--- /dev/null
+++ b/models/ownedCourse.js
@@ -0,0 +1,19 @@
+const mongoose = require("mongoose");
+const ownedCoursesSchema = new mongoose.Schema({
+  courseId: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: "Course",
+  },
+  completedVideo: [
+    {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: "Video",
+    },
+  ],
+
+  userId: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: "User",
+  },
+});
+const ownedCourse = new mongoose.model("ownedCourse", ownedCoursesSchema);
diff --git a/models/review.js b/models/review.js
index 92c27ee..2c1f946 100644
--- a/models/review.js
+++ b/models/review.js
@@ -1,6 +1,10 @@
 const mongoose = require("mongoose");
 const reviewSchema = new mongoose.Schema(
   {
+    courseId: {
+      type: mongoose.Schema.Types.ObjectId,
+      ref: "Course",
+    },
     user: {
       type: mongoose.Schema.Types.ObjectId,
       ref: "User",
diff --git a/models/user_model.js b/models/user_model.js
index 5e8b613..7376ed4 100644
--- a/models/user_model.js
+++ b/models/user_model.js
@@ -39,44 +39,44 @@ const userSchema = new mongoose.Schema({
   profileimg: {
     type: String,
   },
-  createdCourse: [
-    {
-      type: mongoose.Schema.Types.ObjectId,
-      ref: "Course",
-    },
-  ],
-  ownedCourse: [
-    {
-      courseId: {
-        type: mongoose.Schema.Types.ObjectId,
-        ref: "Course",
-      },
-      completedVideo: [
-        {
-          type: mongoose.Schema.Types.ObjectId,
-          ref: "Video",
-        },
-      ],
-    },
-  ],
-  cart: [
-    {
-      type: mongoose.Schema.Types.ObjectId,
-      ref: "Course",
-    },
-  ],
-  wishlist: [
-    {
-      type: mongoose.Schema.Types.ObjectId,
-      ref: "Course",
-    },
-  ],
-  completedCourse: [
-    {
-      type: mongoose.Schema.Types.ObjectId,
-      ref: "Course",
-    },
-  ],
+  // createdCourse: [
+  //   {
+  //     type: mongoose.Schema.Types.ObjectId,
+  //     ref: "Course",
+  //   },
+  // ],
+  // ownedCourse: [
+  //   {
+  //     courseId: {
+  //       type: mongoose.Schema.Types.ObjectId,
+  //       ref: "Course",
+  //     },
+  //     completedVideo: [
+  //       {
+  //         type: mongoose.Schema.Types.ObjectId,
+  //         ref: "Video",
+  //       },
+  //     ],
+  //   },
+  // ],
+  // cart: [
+  //   {
+  //     type: mongoose.Schema.Types.ObjectId,
+  //     ref: "Course",
+  //   },
+  // ],
+  // wishlist: [
+  //   {
+  //     type: mongoose.Schema.Types.ObjectId,
+  //     ref: "Course",
+  //   },
+  // ],
+  // completedCourse: [
+  //   {
+  //     type: mongoose.Schema.Types.ObjectId,
+  //     ref: "Course",
+  //   },
+  // ],
   wallet: {
     type: Number,
     default: 0,
@@ -90,8 +90,8 @@ const userSchema = new mongoose.Schema({
     default: false,
   },
 });
-userSchema.path("createdCourse").default(() => []);
-userSchema.path("ownedCourse").default(() => []);
+// userSchema.path("createdCourse").default(() => []);
+// userSchema.path("ownedCourse").default(() => []);
 
 const User = new mongoose.model("User", userSchema);
 module.exports = User;
diff --git a/models/video.js b/models/video.js
index 70a2a74..7aa8a46 100644
--- a/models/video.js
+++ b/models/video.js
@@ -1,6 +1,11 @@
 const mongoose = require("mongoose");
 
 const videoSchema = new mongoose.Schema({
+  courseId: {
+    type: mongoose.Schema.Types.ObjectId,
+    ref: "Course",
+  },
+  
   videoTitle: {
     type: String,
     required: true,
@@ -22,6 +27,9 @@ const videoSchema = new mongoose.Schema({
     type: Number,
     required: true,
   },
+  note: {
+    type:String
+  }
 });
 const Video = new mongoose.model("Video", videoSchema);
 module.exports = Video;
diff --git a/models/wishlist.js b/models/wishlist.js
new file mode 100644
index 0000000..e69de29