complete Homework 6

Author: dimitri-yatsenko

db-course/004-DatabaseSales.ipynb

@@ -16,15 +16,15 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [
     {
      "name": "stdout",
      "output_type": "stream",
      "text": [
       " * mysql://root:***@127.0.0.1\n",
-      "9 rows affected.\n",
+      "3 rows affected.\n",
       "1 rows affected.\n",
       "0 rows affected.\n",
       "0 rows affected.\n",
@@ -53,7 +53,7 @@
        "[]"
       ]
      },
-     "execution_count": 2,
+     "execution_count": 4,
      "metadata": {},
      "output_type": "execute_result"
     }
@@ -125,6 +125,7 @@
     "  `employee_number` int(11) NOT NULL,\n",
     "  `reports_to` int(11) NOT NULL,\n",
     "  PRIMARY KEY (`employee_number`),\n",
+    "  FOREIGN KEY (`employee_number`) REFERENCES `employee` (`employee_number`),\n",
     "  FOREIGN KEY (`reports_to`) REFERENCES `employee` (`employee_number`)\n",
     ");\n",
     "\n",