designing for maintainability

Advanced SQL for Application Development/06.Designing for Maintainability.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Challenge"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "- Add a new attribute, expore code that is a string of lenght 15, to products table\n",
+    "\n",
+    "- Ten new products with export_code set to \"Restricted\" must be added\n",
+    "\n",
+    "- Existing products must have their export_code column set to \"Unrestricted\"\n",
+    "\n",
+    "- Describe DDL commands required to implement these changes"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Solution"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "- ALTER TABLE ... ADD COLUMN to add export_code\n",
+    "- 10 INSERT statements with product data\n",
+    "- UPDATE statement to set export_code to \"Unrestricted\" WHERE export_code IS NULL"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
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+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
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+}