diff --git a/Big_Data_For_Engineers/.env b/Big_Data_For_Engineers/.env
new file mode 100644
index 0000000..22934c8
--- /dev/null
+++ b/Big_Data_For_Engineers/.env
@@ -0,0 +1,2 @@
+HOST_UID=1000
+HOST_GID=1000
diff --git a/Big_Data_For_Engineers/exercise00/Exercise00_Jupyter_Basics_SQL_Example.ipynb b/Big_Data_For_Engineers/exercise00/Exercise00_Jupyter_Basics_SQL_Example.ipynb
index 96d8505..ca017ae 100644
--- a/Big_Data_For_Engineers/exercise00/Exercise00_Jupyter_Basics_SQL_Example.ipynb
+++ b/Big_Data_For_Engineers/exercise00/Exercise00_Jupyter_Basics_SQL_Example.ipynb
@@ -27,7 +27,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -37,7 +37,15 @@
     "id": "wcohBwLUbN0b",
     "outputId": "31bc09c5-95ae-492f-979e-17cbd0a07d0b"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Hello World\n"
+     ]
+    }
+   ],
    "source": [
     "print(\"Hello World\")"
    ]
@@ -54,7 +62,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -64,7 +72,18 @@
     "id": "TLYAvOpFbN0-",
     "outputId": "b32e3241-ebcf-4bda-eccb-a63b78c09bc0"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[0, 1, 4, 9, 16, 25, 36, 49, 64, 81]"
+      ]
+     },
+     "execution_count": 2,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "maxX = 10\n",
     "[x * x for x in range(maxX)]"
@@ -104,7 +123,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 3,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -114,7 +133,15 @@
     "id": "cY2YeVQNbN1W",
     "outputId": "8df8f4ca-cfee-410b-b378-5cacdeedd077"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Test File\n"
+     ]
+    }
+   ],
    "source": [
     "%%bash\n",
     "echo \"Test File\" > test_file\n",
@@ -143,7 +170,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -153,7 +180,18 @@
     "id": "3nwSdHJybN1v",
     "outputId": "cbabccb3-b36b-4f27-f5cc-e6f5eebd9cde"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "First I modify the file.\n",
+      "Then I check its content:\n",
+      "\n",
+      "Hello World\n"
+     ]
+    }
+   ],
    "source": [
     "print(\"First I modify the file.\")\n",
     "\n",
@@ -183,7 +221,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {
     "colab": {},
     "colab_type": "code",
@@ -211,7 +249,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -221,7 +259,15 @@
     "id": "I9LFmqFobN2V",
     "outputId": "e9be1a64-5cd5-4a91-9677-b96c81d33a29"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[('PostgreSQL 13.4 (Debian 13.4-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit',)]\n"
+     ]
+    }
+   ],
    "source": [
     "import sqlalchemy\n",
     "\n",
@@ -242,7 +288,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 7,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -272,7 +318,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 8,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -282,7 +328,36 @@
     "id": "UYQzRe-bbN2w",
     "outputId": "a6eaa8c8-b2bf-44e1-c3a2-dfe32766fbff"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " * postgresql://postgres:***@postgres:5432/beer.stackexchange.com\n",
+      "1 rows affected.\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "<table>\n",
+       "    <tr>\n",
+       "        <th>version</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>PostgreSQL 13.4 (Debian 13.4-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit</td>\n",
+       "    </tr>\n",
+       "</table>"
+      ],
+      "text/plain": [
+       "[('PostgreSQL 13.4 (Debian 13.4-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit',)]"
+      ]
+     },
+     "execution_count": 8,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%sql\n",
     "SELECT version();"
@@ -300,7 +375,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 9,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -310,7 +385,84 @@
     "id": "IC8xExyvbN27",
     "outputId": "106a7c2e-3998-4319-f833-02a1a363f729"
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Run a query!\n",
+      " * postgresql://postgres:***@postgres:5432/beer.stackexchange.com\n",
+      "10 rows affected.\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "<table>\n",
+       "    <tr>\n",
+       "        <th>id</th>\n",
+       "        <th>displayname</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>-1</td>\n",
+       "        <td>Community</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>1</td>\n",
+       "        <td>Geoff Dalgas</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>2</td>\n",
+       "        <td>Kasra Rahjerdi</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>3</td>\n",
+       "        <td>Adam Lear</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>4</td>\n",
+       "        <td>Arie Litovsky</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>5</td>\n",
+       "        <td>Brian Nickel</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>6</td>\n",
+       "        <td>Jeremy T</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>7</td>\n",
+       "        <td>Tom Medley</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>8</td>\n",
+       "        <td>LessPop_MoreFizz</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>9</td>\n",
+       "        <td>Nick Craver</td>\n",
+       "    </tr>\n",
+       "</table>"
+      ],
+      "text/plain": [
+       "[(-1, 'Community'),\n",
+       " (1, 'Geoff Dalgas'),\n",
+       " (2, 'Kasra Rahjerdi'),\n",
+       " (3, 'Adam Lear'),\n",
+       " (4, 'Arie Litovsky'),\n",
+       " (5, 'Brian Nickel'),\n",
+       " (6, 'Jeremy T'),\n",
+       " (7, 'Tom Medley'),\n",
+       " (8, 'LessPop_MoreFizz'),\n",
+       " (9, 'Nick Craver')]"
+      ]
+     },
+     "execution_count": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "print(\"Run a query!\")\n",
     "%sql SELECT Id, DisplayName FROM Users ORDER BY Id LIMIT 10;"
@@ -329,7 +481,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 10,
    "metadata": {
     "colab": {
      "base_uri": "https://localhost:8080/",
@@ -340,7 +492,50 @@
     "outputId": "e50273c9-2296-4211-ea47-ff8455b2d6fb",
     "scrolled": true
    },
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " * postgresql://postgres:***@postgres:5432/beer.stackexchange.com\n",
+      "8 rows affected.\n",
+      "+--------------+-------+\n",
+      "| creationyear | count |\n",
+      "+--------------+-------+\n",
+      "|    2014.0    |  1527 |\n",
+      "|    2015.0    |  1164 |\n",
+      "|    2016.0    |  1240 |\n",
+      "|    2017.0    |  1078 |\n",
+      "|    2018.0    |  814  |\n",
+      "|    2019.0    |  664  |\n",
+      "|    2020.0    |  825  |\n",
+      "|    2021.0    |  1017 |\n",
+      "+--------------+-------+\n"
+     ]
+    },
+    {
+     "data": {
+      "text/plain": [
+       "Text(0, 0.5, 'Number of Users')"
+      ]
+     },
+     "execution_count": 10,
+     "metadata": {},
+     "output_type": "execute_result"
+    },
+    {
+     "data": {
+      "image/png": "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\n",
+      "text/plain": [
+       "<Figure size 432x288 with 1 Axes>"
+      ]
+     },
+     "metadata": {
+      "needs_background": "light"
+     },
+     "output_type": "display_data"
+    }
+   ],
    "source": [
     "%matplotlib inline\n",
     "import matplotlib.pyplot as plt\n",
@@ -366,6 +561,13 @@
     "ax.set_xlabel('Creation Year')\n",
     "ax.set_ylabel('Number of Users')"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
   }
  ],
  "metadata": {
diff --git a/Big_Data_For_Engineers/exercise00/test_file b/Big_Data_For_Engineers/exercise00/test_file
new file mode 100644
index 0000000..557db03
--- /dev/null
+++ b/Big_Data_For_Engineers/exercise00/test_file
@@ -0,0 +1 @@
+Hello World
diff --git a/Big_Data_For_Engineers/exercise01/Exercise01_SQL_Brush_Up.ipynb b/Big_Data_For_Engineers/exercise01/Exercise01_SQL_Brush_Up.ipynb
index 7f84584..1253cb7 100644
--- a/Big_Data_For_Engineers/exercise01/Exercise01_SQL_Brush_Up.ipynb
+++ b/Big_Data_For_Engineers/exercise01/Exercise01_SQL_Brush_Up.ipynb
@@ -49,7 +49,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 1,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -62,7 +62,7 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [],
    "source": [
@@ -72,9 +72,38 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 3,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " * postgresql://postgres:***@postgres:5432/discogs\n",
+      "1 rows affected.\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "<table>\n",
+       "    <tr>\n",
+       "        <th>version</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>PostgreSQL 13.4 (Debian 13.4-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit</td>\n",
+       "    </tr>\n",
+       "</table>"
+      ],
+      "text/plain": [
+       "[('PostgreSQL 13.4 (Debian 13.4-1.pgdg100+1) on x86_64-pc-linux-gnu, compiled by gcc (Debian 8.3.0-6) 8.3.0, 64-bit',)]"
+      ]
+     },
+     "execution_count": 3,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%sql\n",
     "SELECT version();"
@@ -106,9 +135,47 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " * postgresql://postgres:***@postgres:5432/discogs\n",
+      "4 rows affected.\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "<table>\n",
+       "    <tr>\n",
+       "        <th>table_name</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>artists</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>released_by</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>releases</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>tracks</td>\n",
+       "    </tr>\n",
+       "</table>"
+      ],
+      "text/plain": [
+       "[('artists',), ('released_by',), ('releases',), ('tracks',)]"
+      ]
+     },
+     "execution_count": 4,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%sql \n",
     "SELECT table_name\n",
@@ -126,9 +193,174 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " * postgresql://postgres:***@postgres:5432/discogs\n",
+      "17 rows affected.\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "<table>\n",
+       "    <tr>\n",
+       "        <th>table_name</th>\n",
+       "        <th>column_name</th>\n",
+       "        <th>data_type</th>\n",
+       "        <th>is_nullable</th>\n",
+       "        <th>ordinal_position</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>artists</td>\n",
+       "        <td>artist_id</td>\n",
+       "        <td>integer</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>1</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>artists</td>\n",
+       "        <td>name</td>\n",
+       "        <td>character varying</td>\n",
+       "        <td>YES</td>\n",
+       "        <td>2</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>artists</td>\n",
+       "        <td>realname</td>\n",
+       "        <td>text</td>\n",
+       "        <td>YES</td>\n",
+       "        <td>3</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>artists</td>\n",
+       "        <td>profile</td>\n",
+       "        <td>text</td>\n",
+       "        <td>YES</td>\n",
+       "        <td>4</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>artists</td>\n",
+       "        <td>url</td>\n",
+       "        <td>text</td>\n",
+       "        <td>YES</td>\n",
+       "        <td>5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>released_by</td>\n",
+       "        <td>release_id</td>\n",
+       "        <td>integer</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>1</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>released_by</td>\n",
+       "        <td>artist_id</td>\n",
+       "        <td>integer</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>2</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>releases</td>\n",
+       "        <td>release_id</td>\n",
+       "        <td>integer</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>1</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>releases</td>\n",
+       "        <td>released</td>\n",
+       "        <td>date</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>2</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>releases</td>\n",
+       "        <td>title</td>\n",
+       "        <td>text</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>3</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>releases</td>\n",
+       "        <td>country</td>\n",
+       "        <td>character varying</td>\n",
+       "        <td>YES</td>\n",
+       "        <td>4</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>releases</td>\n",
+       "        <td>genre</td>\n",
+       "        <td>character varying</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>tracks</td>\n",
+       "        <td>release_id</td>\n",
+       "        <td>integer</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>1</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>tracks</td>\n",
+       "        <td>position</td>\n",
+       "        <td>character varying</td>\n",
+       "        <td>YES</td>\n",
+       "        <td>2</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>tracks</td>\n",
+       "        <td>title</td>\n",
+       "        <td>text</td>\n",
+       "        <td>YES</td>\n",
+       "        <td>3</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>tracks</td>\n",
+       "        <td>duration</td>\n",
+       "        <td>integer</td>\n",
+       "        <td>YES</td>\n",
+       "        <td>4</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>tracks</td>\n",
+       "        <td>track_id</td>\n",
+       "        <td>integer</td>\n",
+       "        <td>NO</td>\n",
+       "        <td>5</td>\n",
+       "    </tr>\n",
+       "</table>"
+      ],
+      "text/plain": [
+       "[('artists', 'artist_id', 'integer', 'NO', 1),\n",
+       " ('artists', 'name', 'character varying', 'YES', 2),\n",
+       " ('artists', 'realname', 'text', 'YES', 3),\n",
+       " ('artists', 'profile', 'text', 'YES', 4),\n",
+       " ('artists', 'url', 'text', 'YES', 5),\n",
+       " ('released_by', 'release_id', 'integer', 'NO', 1),\n",
+       " ('released_by', 'artist_id', 'integer', 'NO', 2),\n",
+       " ('releases', 'release_id', 'integer', 'NO', 1),\n",
+       " ('releases', 'released', 'date', 'NO', 2),\n",
+       " ('releases', 'title', 'text', 'NO', 3),\n",
+       " ('releases', 'country', 'character varying', 'YES', 4),\n",
+       " ('releases', 'genre', 'character varying', 'NO', 5),\n",
+       " ('tracks', 'release_id', 'integer', 'NO', 1),\n",
+       " ('tracks', 'position', 'character varying', 'YES', 2),\n",
+       " ('tracks', 'title', 'text', 'YES', 3),\n",
+       " ('tracks', 'duration', 'integer', 'YES', 4),\n",
+       " ('tracks', 'track_id', 'integer', 'NO', 5)]"
+      ]
+     },
+     "execution_count": 5,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%sql \n",
     "SELECT table_name, column_name, data_type, is_nullable, ordinal_position\n",
@@ -150,12 +382,63 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 9,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " * postgresql://postgres:***@postgres:5432/discogs\n",
+      "1 rows affected.\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "<table>\n",
+       "    <tr>\n",
+       "        <th>artist_id</th>\n",
+       "        <th>name</th>\n",
+       "        <th>realname</th>\n",
+       "        <th>profile</th>\n",
+       "        <th>url</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>3840</td>\n",
+       "        <td>Radiohead</td>\n",
+       "        <td>None</td>\n",
+       "        <td>Alternative Rock (Modern Rock) band from Oxfordshire, England (United Kingdom).\r",
+       " \r",
+       " The name Radiohead comes from the [a=Talking Heads] song, &quot;Radio Head&quot;, from the &quot;[url=http://www.discogs.com/Talking-Heads-True-Stories/master/39386]True Stories[/url]&quot; album. \r",
+       " \r",
+       " Formed by school friends in 1986, Radiohead did not release their first single until 1992&#x27;s &quot;[r=767600]&quot;. The cathartic &quot;[url=http://www.discogs.com/Radiohead-Creep/master/21481]Creep[/url]&quot;, from the debut album &quot;[url=http://www.discogs.com/Radiohead-Pablo-Honey/master/13344]Pablo Honey[/url]&quot; (1993), became a worldwide hit as grunge music dominated radio airwaves. \r",
+       " \r",
+       " Radiohead were initially branded as a one-hit wonder abroad, but caught on at home in the UK with their second album, &quot;[url=http://www.discogs.com/Radiohead-The-Bends/master/17008]The Bends[/url]&quot; (1995), earning fans with their dense guitar atmospheres and front man [a=Thom Yorke]&#x27;s expressive singing. The album featured the hits &quot;[url=http://www.discogs.com/Radiohead-High-Dry-Planet-Telex/release/199387]High &amp; Dry[/url]&quot;, &quot;[r=1463625]&quot; and &quot;[url=http://www.discogs.com/Radiohead-Fake-Plastic-Trees/master/21526]Fake Plastic Trees[/url]&quot;. \r",
+       " \r",
+       " The band&#x27;s third album, &quot;[url=http://www.discogs.com/Radiohead-OK-Computer/master/21491]OK Computer[/url]&quot; (1997), propelled them to greater attention. Popular both for its expansive sound and themes of modern alienation, the album has been acclaimed by critics as a landmark record of the 1990&#x27;s, some critics go as far to consider it one of the best of all time. &quot;[url=http://www.discogs.com/Radiohead-Kid-A/master/21501]Kid A[/url]&quot; (2000) marked further evolution, containing influences from experimental electronic music.\r",
+       " \r",
+       " &quot;[url=http://www.discogs.com/Radiohead-Hail-To-The-Thief/master/16962]Hail To The Thief[/url]&quot; (2003) was seen as a conventional return to the guitar and piano-led rock sound. After fulfilling their contract with EMI, Radiohead released &quot;[url=http://www.discogs.com/Radiohead-In-Rainbows/master/21520]In Rainbows[/url]&quot; (2007) famously via a pay-what-you-want model. Their latest album,  &quot;[url=https://www.discogs.com/Radiohead-A-Moon-Shaped-Pool/master/998252]A Moon Shaped Pool[/url]&quot;, was released in May 2016.\r",
+       "  \r",
+       " Radiohead&#x27;s original influences were cited as alternative rock and post-punk bands like [url=http://www.discogs.com/artist/Smiths,+The]The Smiths[/url], [a=Pixies], [a=Magazine], [a=Joy Division], and [a=R.E.M.] (with lead singer of the band, Thom Yorke, refering to himself as an &#x27;R.E.M. groupie&#x27;).</td>\n",
+       "        <td>http://www.radiohead.com</td>\n",
+       "    </tr>\n",
+       "</table>"
+      ],
+      "text/plain": [
+       "[(3840, 'Radiohead', None, 'Alternative Rock (Modern Rock) band from Oxfordshire, England (United Kingdom).\\r \\r The name Radiohead comes from the [a=Talking Heads] song, \"Radio ... (2253 characters truncated) ...  [a=Pixies], [a=Magazine], [a=Joy Division], and [a=R.E.M.] (with lead singer of the band, Thom Yorke, refering to himself as an \\'R.E.M. groupie\\').', 'http://www.radiohead.com')]"
+      ]
+     },
+     "execution_count": 9,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%sql\n",
-    "..."
+    "SELECT *\n",
+    "FROM artists\n",
+    "WHERE name = 'Radiohead'"
    ]
   },
   {
@@ -167,12 +450,558 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 13,
    "metadata": {},
-   "outputs": [],
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      " * postgresql://postgres:***@postgres:5432/discogs\n",
+      "129 rows affected.\n"
+     ]
+    },
+    {
+     "data": {
+      "text/html": [
+       "<table>\n",
+       "    <tr>\n",
+       "        <th>title</th>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>2+2=5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>2+2=5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>2+2=5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>2+2=5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>2+2=5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>2+2=5</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>27 5 94 The Astoria London Live</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>7 Television Commercials</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>7 Television Commercials</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>7 Television Commercials.</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Airbag / How Am I Driving?</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Ale To The Thieves</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Amnesiac</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Amnesiac</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Amnesiac</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Amnesiac</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Amnesiac</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Anyone Can Play Guitar</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>A Punchup At A Wedding</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Beats And Breaks</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Bizarre Love Triangle / Everything In Its Right Place (Nigel&#x27;s Progressive House Mixes)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Climbing Up The Walls (Remixes)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Com Lag (2plus2isfive)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Creep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Creep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Creep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Creep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Deep In Velvet / Idioteque</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Drill</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Everything In Its Right Place (Aquasky Remix)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Everything In Its Right Place (House Mix)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Fake Plastic Trees</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Fake Plastic Trees</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Go To Sleep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Go To Sleep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Go To Sleep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Go To Sleep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Go To Sleep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Go To Sleep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Go To Sleep</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Go To Sleep (Zoo DJs Remix)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Greenhouse Effect Vs. Radiohead</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Hail To The Thief</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Hail To The Thief</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Hail To The Thief</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Hail To The Thief</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Hail To The Thief</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Hail To The Thief</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Hail To The Thief (Special Edition)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>High &amp; Dry</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>High &amp; Dry / Planet Telex</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>High &amp; Dry / Planet Telex</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>High &amp; Dry / Planet Telex</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Idioteque</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>I Might Be Wrong - Live Recordings</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>I Might Be Wrong - Live Recordings</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Interview CD</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Itch</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Just</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Karma Police</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Karma Police</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Karma Police</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A (Book And Compact Disc)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Kid A (Book And Compact Disc)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Knives Out</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Knives Out</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Knives Out</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Knives Out</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Knives Out</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Knives Out</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Knives Out</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Knives Out / Cuttooth</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Lucky</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>My Iron Lung</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>My Iron Lung</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>My Iron Lung</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>My Iron Lung E.P.</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>No Surprises</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>No Surprises</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>No Surprises</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>No Surprises</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>No Surprises / Running From Demons = ノーサプライゼス〜ランニング・フロム・ディーモンズ</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>OK Computer</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>OK Computer</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>OK Computer</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>OK Computer</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pablo Honey</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pablo Honey</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pablo Honey</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Packt Like Sardines In A Crushd Tin Box (SM Remix)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Paranoid Android</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Paranoid Android</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Paranoid Android</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Paranoid Android</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Planet Telex</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pop Is Dead</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pyramid Song</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pyramid Song</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pyramid Song</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pyramid Song</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Pyramid Song</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Radiohead - In-Store Compilation</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Remyxomatosis / Sktterbrain</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Street Spirit</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Street Spirit / Die Another Day</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Street Spirit (Fade Out)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Street Spirit (Fade Out)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Street Spirit (Fade Out)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Street Spirit (Fade Out)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>The Bends</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>The Bends</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>The Bends</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>The Bends T/W Edition</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>The Bends = ザ・ベンズ</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>The Gloaming (DJ Shadow Remix)</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>The Kid Parade</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>There There</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>There There</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>There There</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>There There</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>The Right Place</td>\n",
+       "    </tr>\n",
+       "    <tr>\n",
+       "        <td>Where I End And You Begin (2005 Club Mix)</td>\n",
+       "    </tr>\n",
+       "</table>"
+      ],
+      "text/plain": [
+       "[('2+2=5',),\n",
+       " ('2+2=5',),\n",
+       " ('2+2=5',),\n",
+       " ('2+2=5',),\n",
+       " ('2+2=5',),\n",
+       " ('2+2=5',),\n",
+       " ('27 5 94 The Astoria London Live',),\n",
+       " ('7 Television Commercials',),\n",
+       " ('7 Television Commercials',),\n",
+       " ('7 Television Commercials.',),\n",
+       " ('Airbag / How Am I Driving?',),\n",
+       " ('Ale To The Thieves',),\n",
+       " ('Amnesiac',),\n",
+       " ('Amnesiac',),\n",
+       " ('Amnesiac',),\n",
+       " ('Amnesiac',),\n",
+       " ('Amnesiac',),\n",
+       " ('Anyone Can Play Guitar',),\n",
+       " ('A Punchup At A Wedding',),\n",
+       " ('Beats And Breaks',),\n",
+       " (\"Bizarre Love Triangle / Everything In Its Right Place (Nigel's Progressive House Mixes)\",),\n",
+       " ('Climbing Up The Walls (Remixes)',),\n",
+       " ('Com Lag (2plus2isfive)',),\n",
+       " ('Creep',),\n",
+       " ('Creep',),\n",
+       " ('Creep',),\n",
+       " ('Creep',),\n",
+       " ('Deep In Velvet / Idioteque',),\n",
+       " ('Drill',),\n",
+       " ('Everything In Its Right Place (Aquasky Remix)',),\n",
+       " ('Everything In Its Right Place (House Mix)',),\n",
+       " ('Fake Plastic Trees',),\n",
+       " ('Fake Plastic Trees',),\n",
+       " ('Go To Sleep',),\n",
+       " ('Go To Sleep',),\n",
+       " ('Go To Sleep',),\n",
+       " ('Go To Sleep',),\n",
+       " ('Go To Sleep',),\n",
+       " ('Go To Sleep',),\n",
+       " ('Go To Sleep',),\n",
+       " ('Go To Sleep (Zoo DJs Remix)',),\n",
+       " ('Greenhouse Effect Vs. Radiohead',),\n",
+       " ('Hail To The Thief',),\n",
+       " ('Hail To The Thief',),\n",
+       " ('Hail To The Thief',),\n",
+       " ('Hail To The Thief',),\n",
+       " ('Hail To The Thief',),\n",
+       " ('Hail To The Thief',),\n",
+       " ('Hail To The Thief (Special Edition)',),\n",
+       " ('High & Dry',),\n",
+       " ('High & Dry / Planet Telex',),\n",
+       " ('High & Dry / Planet Telex',),\n",
+       " ('High & Dry / Planet Telex',),\n",
+       " ('Idioteque',),\n",
+       " ('I Might Be Wrong - Live Recordings',),\n",
+       " ('I Might Be Wrong - Live Recordings',),\n",
+       " ('Interview CD',),\n",
+       " ('Itch',),\n",
+       " ('Just',),\n",
+       " ('Karma Police',),\n",
+       " ('Karma Police',),\n",
+       " ('Karma Police',),\n",
+       " ('Kid A',),\n",
+       " ('Kid A',),\n",
+       " ('Kid A',),\n",
+       " ('Kid A',),\n",
+       " ('Kid A',),\n",
+       " ('Kid A',),\n",
+       " ('Kid A',),\n",
+       " ('Kid A (Book And Compact Disc)',),\n",
+       " ('Kid A (Book And Compact Disc)',),\n",
+       " ('Knives Out',),\n",
+       " ('Knives Out',),\n",
+       " ('Knives Out',),\n",
+       " ('Knives Out',),\n",
+       " ('Knives Out',),\n",
+       " ('Knives Out',),\n",
+       " ('Knives Out',),\n",
+       " ('Knives Out / Cuttooth',),\n",
+       " ('Lucky',),\n",
+       " ('My Iron Lung',),\n",
+       " ('My Iron Lung',),\n",
+       " ('My Iron Lung',),\n",
+       " ('My Iron Lung E.P.',),\n",
+       " ('No Surprises',),\n",
+       " ('No Surprises',),\n",
+       " ('No Surprises',),\n",
+       " ('No Surprises',),\n",
+       " ('No Surprises / Running From Demons = ノーサプライゼス〜ランニング・フロム・ディーモンズ',),\n",
+       " ('OK Computer',),\n",
+       " ('OK Computer',),\n",
+       " ('OK Computer',),\n",
+       " ('OK Computer',),\n",
+       " ('Pablo Honey',),\n",
+       " ('Pablo Honey',),\n",
+       " ('Pablo Honey',),\n",
+       " ('Packt Like Sardines In A Crushd Tin Box (SM Remix)',),\n",
+       " ('Paranoid Android',),\n",
+       " ('Paranoid Android',),\n",
+       " ('Paranoid Android',),\n",
+       " ('Paranoid Android',),\n",
+       " ('Planet Telex',),\n",
+       " ('Pop Is Dead',),\n",
+       " ('Pyramid Song',),\n",
+       " ('Pyramid Song',),\n",
+       " ('Pyramid Song',),\n",
+       " ('Pyramid Song',),\n",
+       " ('Pyramid Song',),\n",
+       " ('Radiohead - In-Store Compilation',),\n",
+       " ('Remyxomatosis / Sktterbrain',),\n",
+       " ('Street Spirit',),\n",
+       " ('Street Spirit / Die Another Day',),\n",
+       " ('Street Spirit (Fade Out)',),\n",
+       " ('Street Spirit (Fade Out)',),\n",
+       " ('Street Spirit (Fade Out)',),\n",
+       " ('Street Spirit (Fade Out)',),\n",
+       " ('The Bends',),\n",
+       " ('The Bends',),\n",
+       " ('The Bends',),\n",
+       " ('The Bends T/W Edition',),\n",
+       " ('The Bends = ザ・ベンズ',),\n",
+       " ('The Gloaming (DJ Shadow Remix)',),\n",
+       " ('The Kid Parade',),\n",
+       " ('There There',),\n",
+       " ('There There',),\n",
+       " ('There There',),\n",
+       " ('There There',),\n",
+       " ('The Right Place',),\n",
+       " ('Where I End And You Begin (2005 Club Mix)',)]"
+      ]
+     },
+     "execution_count": 13,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
    "source": [
     "%%sql\n",
-    "..."
+    "SELECT releases.title\n",
+    "FROM artists\n",
+    "JOIN released_by USING(artist_id)\n",
+    "JOIN releases USING(release_id)\n",
+    "WHERE artists.name = 'Radiohead'\n",
+    "ORDER BY releases.title"
    ]
   },
   {