diff --git a/02-database-design-and-modeling.ipynb b/02-database-design.ipynb
similarity index 89%
rename from 02-database-design-and-modeling.ipynb
rename to 02-database-design.ipynb
index 1aeeef1..93193ea 100644
--- a/02-database-design-and-modeling.ipynb
+++ b/02-database-design.ipynb
@@ -234,62 +234,6 @@
     "## Partial and Total Participation"
    ]
   },
-  {
-   "cell_type": "markdown",
-   "id": "e98750aa-6f73-43dc-9ebe-6334d612e0eb",
-   "metadata": {},
-   "source": [
-    "## Entity or Attribute?"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "939dbb48-dfee-4c32-a369-6f31133796cb",
-   "metadata": {},
-   "source": [
-    "## Entity or Relationship?"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "a31e2d1e-02be-4f39-a963-89f3d769453e",
-   "metadata": {},
-   "source": [
-    "## Intermediate Entities"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "83de1199-4983-491a-ac69-a1b74b8ba338",
-   "metadata": {},
-   "source": [
-    "![alt text](./images/2.png)"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "c303385e-b2f0-4a36-83de-87376982d852",
-   "metadata": {},
-   "source": [
-    "![alt text](./images/3.png)"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "37731098-ec7b-411e-a71e-8956038c0bc7",
-   "metadata": {},
-   "source": [
-    "## Weak and Strong Entities"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "id": "6d38e15a-672a-4b0a-b25c-3ba64a6b13ed",
-   "metadata": {},
-   "source": [
-    "![alt text](./images/4.png)"
-   ]
-  },
   {
    "cell_type": "markdown",
    "id": "ac5fa128-940d-4553-b888-909e6b18511b",
@@ -459,24 +403,6 @@
    "id": "bfcec292-b81f-47bf-9c63-a30728899962",
    "metadata": {},
    "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "id": "0ca900cd-c216-4c52-8d8f-0f130d4043c5",
-   "metadata": {},
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "id": "6c36d091-0bd5-4c10-8d92-48c6dfddb81f",
-   "metadata": {},
-   "source": []
-  },
-  {
-   "cell_type": "markdown",
-   "id": "0c50acb3-85bd-4aa7-9fe7-43dcd6346a8b",
-   "metadata": {},
-   "source": []
   }
  ],
  "metadata": {