{"id":214,"date":"2021-03-22T16:14:15","date_gmt":"2021-03-22T16:14:15","guid":{"rendered":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/?page_id=214"},"modified":"2021-03-25T15:40:26","modified_gmt":"2021-03-25T15:40:26","slug":"ddl-code","status":"publish","type":"page","link":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/creating-a-database\/ddl-code\/","title":{"rendered":"DDL Code"},"content":{"rendered":"<h1><span style=\"color: #339966\">Level &#8211; National 5+<\/span><\/h1>\n<h1>Checking for Correctness<\/h1>\n<p>As you have been creating tables, the SQL command to create that table has been displayed at the bottom of the &#8220;Edit table definition&#8221; window:<br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-319\" src=\"https:\/\/blogs.glowscotland.org.uk\/sh\/public\/ahscomputingsql\/uploads\/sites\/3269\/2021\/03\/24151004\/DB4SQL-DDL.png\" alt=\"\" width=\"524\" height=\"138\" srcset=\"https:\/\/blogs.glowscotland.org.uk\/sh\/public\/ahscomputingsql\/uploads\/sites\/3269\/2021\/03\/24151004\/DB4SQL-DDL.png 524w, https:\/\/glow-prod-sh.s3.eu-west-1.amazonaws.com\/sh\/public\/ahscomputingsql\/uploads\/sites\/3269\/2021\/03\/24151004\/DB4SQL-DDL-300x79.png?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&amp;X-Amz-Security-Token=IQoJb3JpZ2luX2VjEE8aCWV1LXdlc3QtMSJHMEUCIQCJ14IrvkVyUx4zNG%2BAJDDMR54ZfVrPqnMZG9iQVHUsdgIgMzlyuDx%2F42dSY2OC8tEKCbpOYC0vAiIkygc4dVx1rJ0quQUIGBAFGgwyNzM1NzAxOTU0MzMiDFpSVlhYlpnx%2B19ZsiqWBW4hBTg7y2%2BXztHDOXN0Mn%2FA9VX0srtPFZAMPnH42aTZSlbZHiCiQaLenTEB%2BwCH91TageIcdlDyUB02uEG9P6dnP%2FzxfEcOsoj11KtjOkz0hx6J1ObcAB4pOJeU4X5TVZsCzO%2BTyeKIJqsd5Qc62PWiNq1qPM4nmC9DaUjKZihYpw0qi4tajlm90Usdly4BOzTJ%2BrrqqBGUg3yeozMHyZQ6Rr6IVLI724S%2FVumvMuwwubMdS6YYsyvTKqKuJBtdEhFpzsPwPFk80bm0qM%2FRRpCTpyPZsgRTnAb7ih0gJxsAwcIRx9tebUgJU7GEtPnG98%2B5Ppg%2Bl7c5P7IaCE7Ludv%2FS3s%2FOuCu0MS2MdO3O5Fw%2BUAvsxIhTn6PX0ppWQSEmF8Pgr4c1emYedl0rc%2B%2BMSLJ5l12GeflJM%2FMH%2By8mFvHb4mmLDaUzNtVm8Tshn100cI%2FjsQIVX3xebyoBt%2BdYxBhkYDU4wkacxN7%2F4tAeCJ%2BvAItaTaW%2BiFQVW7eSBd2pOmqpYjKqfJEW9M4S2o0hUxCoWpjcevNLgQsz3GL2maq0xyf5Sc%2FLJryEKPUTiYJTDNngb%2FRw1VF1OVLx8Lgu53J%2F3spCSSWJ1P5CAkrZH6LTPbfXHc0mzPoiBDkjYAP84BsaWOKfmzj6EB%2FrvzYXIsH1eRRu8TAtld7GRs%2FapFkKF%2ByBntjo2CVG2v00UjUWbfGBOuwbukrqQ16YATsmT%2BtFzb8oIZ%2F69NOeHMRsXP2lDjmq4zKfPpRin%2FJFs3%2BCwP4IkpWNBJdrGUM9iI%2Fwta7N6mFTRMUhN5Gt7RUolbaK4BANTDT9N1Gw02aL%2FT0cjF%2BakVedPuF3gGdNm2OiC4%2B6Ff3RgFomimMxQaF6hCZApC5sTXuMPXQh9AGOrEBVxlrOkzC3cJBX%2B4b6A02D8NaKqySkVhZxQQ%2FScRDEwLWOsH6lBYtZ4X96cjUu5PW%2BQnput%2BuV1MVbO965eq37isvc6%2FbIJ%2BLMyTwB47OlcdTqCO0T%2FHcLYG%2FMmg3wON4V%2Bn7SKglbm2bqFPw3gPNcefvE2qrXclGiLp19k4TgDNFGNY1K9%2BW83PUu99yyT%2BppHmKJp%2FC3QfTHwQh299IbV%2BkI8h4%2BVqnEsbYu4aIpQy8&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=ASIAT7MQN47UUNCTMZ64%2F20260511%2Feu-west-1%2Fs3%2Faws4_request&amp;X-Amz-Date=20260511T150110Z&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Expires=900&amp;X-Amz-Signature=e568a048993ddb73f27c573d6ce83153f4c930afecfbb69842cf0fe314c0d76f 300w\" sizes=\"auto, (max-width: 524px) 100vw, 524px\" \/><\/p>\n<p><em>Note: Quotation marks may have been added to table\/field names, and any other text.<\/em><\/p>\n<p>Compare this with every item on your data dictionary:<\/p>\n<ul>\n<li>Are your field names correct?<\/li>\n<li>Are the data types correct?<\/li>\n<\/ul>\n<ul>\n<li>Is there a Primary key?<\/li>\n<li>Is the Primary key Unique?<\/li>\n<li>Is the Primary key Not Null?<\/li>\n<li>Are foreign keys connected to the correct table and field?<\/li>\n<\/ul>\n<ul>\n<li>Are required fields set to \u201cNot Null\u201d?<\/li>\n<li>Are your length checks correct?<\/li>\n<li>Are your range checks correct?<\/li>\n<li>Are your restricted choice checks correct?<\/li>\n<\/ul>\n<h1>Printing Evidence<\/h1>\n<p>This DDL code can copied and pasted into a Word document, but it will lose any autoformatting:<\/p>\n<pre>CREATE TABLE \"appointments\" (\n\"appointment_id\" INTEGER,\n\"customer_id\" INTEGER,\n\"date\" TEXT,\n\"time\" TEXT,\n\"completed\" NUMERIC,\nFOREIGN KEY(\"customer_id\") REFERENCES \"customers\"(\"customer_id\")\n);<\/pre>\n<p>Using the Snipping Tool will keep the autoformatting, making it easier to read:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-319\" src=\"https:\/\/blogs.glowscotland.org.uk\/sh\/public\/ahscomputingsql\/uploads\/sites\/3269\/2021\/03\/24151004\/DB4SQL-DDL.png\" alt=\"\" width=\"524\" height=\"138\" srcset=\"https:\/\/blogs.glowscotland.org.uk\/sh\/public\/ahscomputingsql\/uploads\/sites\/3269\/2021\/03\/24151004\/DB4SQL-DDL.png 524w, 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300w\" sizes=\"auto, (max-width: 524px) 100vw, 524px\" \/><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Level &#8211; National 5+ Checking for Correctness As you have been creating tables, the SQL command to create that table has been displayed at the bottom of the &#8220;Edit table definition&#8221; window: Note: Quotation marks may have been added to table\/field names, and any other text. Compare this with every item on your data dictionary: Are your field names correct? Are the data types correct? Is there a Primary key?<\/p>\n<p><a class=\"more-link\" href=\"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/creating-a-database\/ddl-code\/\">Read More<\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"parent":262,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-214","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/pages\/214","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/users\/7"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/comments?post=214"}],"version-history":[{"count":8,"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/pages\/214\/revisions"}],"predecessor-version":[{"id":408,"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/pages\/214\/revisions\/408"}],"up":[{"embeddable":true,"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/pages\/262"}],"wp:attachment":[{"href":"https:\/\/blogs.glowscotland.org.uk\/sh\/ahscomputingsql\/wp-json\/wp\/v2\/media?parent=214"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}