{"id":7592,"date":"2026-01-30T10:30:00","date_gmt":"2026-01-30T01:30:00","guid":{"rendered":"https:\/\/blog.since2020.jp\/?p=7592"},"modified":"2026-01-30T10:30:00","modified_gmt":"2026-01-30T01:30:00","slug":"bigquery-obt-design-dmbok","status":"publish","type":"post","link":"https:\/\/since2020.jp\/media\/bigquery-obt-design-dmbok\/","title":{"rendered":"DMBOK\u6e96\u62e0\u306eBigQuery\u306b\u304a\u3051\u308bOBT\u8a2d\u8a08"},"content":{"rendered":"\n<p>\u300cBI\u63cf\u753b\u304c\u9045\u3044\u300d\u300cJOIN\u304c\u96e3\u3057\u3044\u300d\u2026\u305d\u306e\u60a9\u307f\u3001BigQuery\u00d7OBT\u3067\u89e3\u6c7a\u3057\u307e\u305b\u3093\u304b\uff1fDMBOK\u306e\u57fa\u790e\u3092\u62bc\u3055\u3048\u3064\u3064\u3001\u5de8\u5927\u306a\u4e00\u679a\u30c6\u30fc\u30d6\u30eb\uff08OBT\uff09\u3092\u4f5c\u6210\u3059\u308b\u5177\u4f53\u7684\u306a3\u5c64\u8a2d\u8a08\u30d5\u30ed\u30fc\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002\u30b3\u30b9\u30c8\u524a\u6e1b\u3068\u30c7\u30fc\u30bf\u6c11\u4e3b\u5316\u3092\u5b9f\u73fe\u3059\u308b\u3001\u30e2\u30c0\u30f3\u306a\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u306e\u5b9f\u8df5\u30ac\u30a4\u30c9\u306b\u3064\u3044\u3066\u3082\u89e6\u308c\u307e\u3059\u3002<\/p>\n\n\n<h2>\u306a\u305c\u4eca\u3001OBT\uff08One Big Table\uff09\u306a\u306e\u304b\uff1f<\/h2>\n<p>OBT\u3068\u306f\u3001\u305d\u306e\u540d\u306e\u901a\u308a\u300c\u4e00\u3064\u306e\u5de8\u5927\u306a\u30c6\u30fc\u30d6\u30eb\u300d\u306e\u3053\u3068\u3067\u3059\u3002 \u30d5\u30a1\u30af\u30c8\u30c6\u30fc\u30d6\u30eb\uff08\u4e8b\u5b9f\uff09\u306b\u3042\u3089\u3086\u308b\u30c7\u30a3\u30e1\u30f3\u30b7\u30e7\u30f3\u30c6\u30fc\u30d6\u30eb\uff08\u5c5e\u6027\uff09\u3092\u3042\u3089\u304b\u3058\u3081\u7d50\u5408\uff08JOIN\uff09\u3057\u3001\u975e\u6b63\u898f\u5316\uff08Denormalization\uff09\u3057\u305f\u72b6\u614b\u3067\u4fdd\u6301\u3059\u308b\u30e2\u30c7\u30eb\u3092\u6307\u3057\u307e\u3059\u3002<\/p>\r\n<b>BigQuery\u3068OBT\u306e\u76f8\u6027\u306f\u629c\u7fa4<\/b>\r\n<p>\u5f93\u6765\u306eRDB\u3067\u306f\u300c\u6b63\u898f\u5316\u300d\u306b\u3088\u308b\u91cd\u8907\u6392\u9664\u304c\u6b63\u7fa9\u3067\u3057\u305f\u304c\u3001BigQuery\u306b\u304a\u3044\u3066\u306fOBT\u304c\u4ee5\u4e0b\u306e\u7406\u7531\u3067\u63a8\u5968\u3055\u308c\u308b\u30b1\u30fc\u30b9\u304c\u5897\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\r\n<ol>\r\n\t<li><strong>\u30ab\u30e9\u30e0\u30ca\uff08\u5217\u6307\u5411\uff09\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u7279\u6027<\/strong> BigQuery\u306f\u30c7\u30fc\u30bf\u3092\u5217\u5358\u4f4d\u3067\u4fdd\u5b58\u3057\u307e\u3059\u3002\u6a2a\u306b\u9577\u3044\uff08\u30ab\u30e9\u30e0\u304c\u591a\u3044\uff09\u30c6\u30fc\u30d6\u30eb\u3067\u3042\u3063\u3066\u3082\u3001\u30af\u30a8\u30ea\u3067\u5fc5\u8981\u306a\u30ab\u30e9\u30e0\u3060\u3051\u3092\u6307\u5b9a\u3059\u308c\u3070\u3001\u30b9\u30ad\u30e3\u30f3\u6599\u91d1\u3084\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u60aa\u5f71\u97ff\u3092\u4e0e\u3048\u307e\u305b\u3093\u3002<\/li>\r\n\t<li><strong>JOIN\u30b3\u30b9\u30c8\u306e\u524a\u6e1b<\/strong> \u5206\u6563\u51e6\u7406\u57fa\u76e4\u3067\u3042\u308bBigQuery\u306b\u3068\u3063\u3066\u3001\u5de8\u5927\u306a\u30c6\u30fc\u30d6\u30eb\u540c\u58eb\u306eJOIN\uff08Shuffle\u64cd\u4f5c\uff09\u306f\u6bd4\u8f03\u7684\u30b3\u30b9\u30c8\u306e\u9ad8\u3044\u51e6\u7406\u3067\u3059\u3002OBT\u3067\u3042\u3089\u304b\u3058\u3081\u7d50\u5408\u3057\u3066\u304a\u3051\u3070\u3001\u5206\u6790\u30af\u30a8\u30ea\u5b9f\u884c\u6642\u306e\u8a08\u7b97\u30ea\u30bd\u30fc\u30b9\u3092\u5927\u5e45\u306b\u7bc0\u7d04\u3067\u304d\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u3082\u9ad8\u901f\u5316\u3057\u307e\u3059\u3002<\/li>\r\n\t<li><strong>\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u3078\u306e\u5229\u4fbf\u6027\uff08\u30c7\u30fc\u30bf\u6c11\u4e3b\u5316\uff09<\/strong> \u300c\u58f2\u4e0a\u300d\u3068\u300c\u9867\u5ba2\u30de\u30b9\u30bf\u300d\u3068\u300c\u5546\u54c1\u30de\u30b9\u30bf\u300d\u3092\u90fd\u5ea6JOIN\u3057\u3066\u2026\u3068\u3044\u3046SQL\u3092\u66f8\u304b\u306a\u304f\u3066\u3082\u3001OBT\u306a\u3089<code>SELECT *<\/code>\uff08\u3042\u308b\u3044\u306fBI\u30c4\u30fc\u30eb\u306e\u30c9\u30e9\u30c3\u30b0\uff06\u30c9\u30ed\u30c3\u30d7\uff09\u3060\u3051\u3067\u5206\u6790\u304c\u5b8c\u7d50\u3057\u307e\u3059\u3002<\/li>\r\n<\/ol>\r\n<p><!-- notionvc: 9726b5ff-0dec-4440-bab4-b28bf563d743 --><\/p>\n\n<h2>DMBOK\u306e\u8996\u70b9\u304b\u3089\u898b\u308bOBT\u8a2d\u8a08<\/h2>\n<p>DMBOK\u306e\u300c\u30c7\u30fc\u30bf\u30e2\u30c7\u30ea\u30f3\u30b0\u3068\u30c7\u30b6\u30a4\u30f3\u300d\u306e\u7ae0\u3067\u306f\u3001\u6982\u5ff5\u30fb\u8ad6\u7406\u30fb\u7269\u7406\u306e3\u6bb5\u968e\u306e\u30e2\u30c7\u30ea\u30f3\u30b0\u304c\u63d0\u5531\u3055\u308c\u3066\u3044\u307e\u3059\u3002OBT\u3092\u63a1\u7528\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u3053\u306e\u601d\u8003\u30d7\u30ed\u30bb\u30b9\u306f\u7121\u8996\u3067\u304d\u307e\u305b\u3093\u3002\u3044\u304d\u306a\u308a\u5de8\u5927\u306a\u30c6\u30fc\u30d6\u30eb\u3092\u4f5c\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u6bb5\u968e\u3092\u8e0f\u307f\u307e\u3059\u3002<\/p>\r\n<ol>\r\n\t<li><strong>\u8ad6\u7406\u30e2\u30c7\u30eb\uff08\u30b9\u30bf\u30fc\u30b9\u30ad\u30fc\u30de\u7b49\u306e\u6574\u7406\uff09<\/strong> \u307e\u305a\u306f\u6b63\u898f\u5316\u3055\u308c\u305f\u5f62\u3084\u30b9\u30bf\u30fc\u30b9\u30ad\u30fc\u30de\u3068\u3057\u3066\u3001\u30d3\u30b8\u30cd\u30b9\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u9593\u306e\u95a2\u4fc2\u6027\uff08\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\uff09\u3092\u6574\u7406\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3084\u30d3\u30b8\u30cd\u30b9\u30eb\u30fc\u30eb\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/li>\r\n\t<li><strong>\u7269\u7406\u30e2\u30c7\u30eb\uff08OBT\u3078\u306e\u5909\u63db\uff09<\/strong> \u8ad6\u7406\u30e2\u30c7\u30eb\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u95a2\u4fc2\u6027\u3092\u3001BigQuery\u306e\u7269\u7406\u30c6\u30fc\u30d6\u30eb\u3068\u3057\u3066\u5b9f\u88c5\u3059\u308b\u969b\u306b\u300c\u975e\u6b63\u898f\u5316\u300d\u3092\u9078\u629e\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u8981\u4ef6\u306b\u5fdc\u3058\u305fOBT\u5316\u3092\u884c\u3044\u307e\u3059\u3002<\/li>\r\n<\/ol>\r\n<p><!-- notionvc: daedc24a-b76d-4dfe-b977-6ea89a5787c4 --><\/p>\n\n<h2>\u3010\u5b9f\u8df5\u3011\u30ec\u30a4\u30e4\u30fc\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306b\u3088\u308bOBT\u69cb\u7bc9\u30d5\u30ed\u30fc<\/h2>\n<p>OBT\u3092\u4f5c\u6210\u3059\u308b\u969b\u306f\u3001dbt\uff08data build tool\uff09\u306a\u3069\u3067\u63a1\u7528\u3055\u308c\u308b\u300c3\u5c64\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\uff08ELT\uff09\u300d\u306e\u8003\u3048\u65b9\u3092\u53d6\u308a\u5165\u308c\u308b\u3068\u3001DMBOK\u7684\u306a\u54c1\u8cea\u7ba1\u7406\u3068\u7269\u7406\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u4e21\u7acb\u304c\u5bb9\u6613\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\r\n<p>\u4ee5\u4e0b\u306b\u3001Staging\u304b\u3089Mart\uff08OBT\uff09\u306b\u81f3\u308b\u307e\u3067\u306e\u30c7\u30fc\u30bf\u30d1\u30a4\u30d7\u30e9\u30a4\u30f3\u306e\u6d41\u308c\u3092\u56f3\u89e3\u3057\u307e\u3059\u3002<\/p>\r\n<div class=\"hcb_wrap\">\r\n<pre class=\"prism line-numbers lang-plain\" data-lang=\"Plain Text\"><code>\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n\u2502 STAGING LAYER (stg)                                                     \u2502\r\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n\u2502 \u30fbRaw\u30c7\u30fc\u30bf\u306e\u53d6\u308a\u8fbc\u307f\uff08Source\uff09                                             \u2502\r\n\u2502 \u30fb\u578b\u5909\u63db\uff08Casting\uff09\u3001\u30ab\u30e9\u30e0\u540d\u306e\u30ea\u30cd\u30fc\u30e0\uff08\u82f1\u540d\u5316\uff09                               \u2502\r\n\u2502 \u30fbPII\uff08\u500b\u4eba\u60c5\u5831\uff09\u306e\u30cf\u30c3\u30b7\u30e5\u5316\u3084\u30de\u30b9\u30ad\u30f3\u30b0\u51e6\u7406                                  \u2502\r\n\u2502 \u30fb1\u5bfe1\u306e\u5358\u7d14\u306a\u5909\u63db\u51e6\u7406\uff08\u30c7\u30fc\u30bf\u306e\u6a19\u6e96\u5316\uff09                                       \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n                                     \u2502\r\n                                     \u2502\r\n                                     \u25bc\r\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n\u2502 INTERMEDIATE LAYER (int)                                                \u2502\r\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n\u2502 \u30fb\u30d3\u30b8\u30cd\u30b9\u30ed\u30b8\u30c3\u30af\u306e\u9069\u7528                                                    \u2502\r\n\u2502 \u30fb\u8ad6\u7406\u30e2\u30c7\u30eb\u306e\u5f62\u6210\uff08\u30d5\u30a1\u30af\u30c8\u3068\u30c7\u30a3\u30e1\u30f3\u30b7\u30e7\u30f3\u306e\u6e96\u5099\uff09                             \u2502\r\n\u2502 \u30fb\u5171\u901a\u5229\u7528\u3055\u308c\u308b\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u306e\u4f5c\u6210                                            \u2502\r\n\u2502 \u30fb\u8907\u96d1\u306a\u7d50\u5408\u306e\u524d\u51e6\u7406                                                        \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518\r\n                                     \u2502\r\n                                     \u2502\r\n                                     \u25bc\r\n\u250c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2510\r\n\u2502 MART LAYER (mart)                                                       \u2502\r\n\u251c\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2524\r\n\u2502 \u3010 \u3053\u3053\u304c OBT (One Big Table) \u3011                                          \u2502\r\n\u2502 \u30fbIntermediate\u306e\u30d5\u30a1\u30af\u30c8\u3068\u30c7\u30a3\u30e1\u30f3\u30b7\u30e7\u30f3\u3092\u5168\u3066JOIN                            \u2502\r\n\u2502 \u30fb\u5206\u6790\u30e6\u30fc\u30b6\u30fc\u304c\u4f7f\u3044\u3084\u3059\u3044\u30ab\u30e9\u30e0\u540d\uff08\u65e5\u672c\u8a9e\u30e9\u30d9\u30eb\u7b49\uff09\u3078\u306e\u6700\u7d42\u8abf\u6574                   \u2502\r\n\u2502 \u30fbBigQuery\u306e\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3(Partition)\u3068\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0(Cluster)\u306e\u8a2d\u5b9a           \u2502\r\n\u2502 \u30fbBI\u30c4\u30fc\u30eb\u304b\u3089\u76f4\u63a5\u53c2\u7167\u3055\u308c\u308b\u6700\u7d42\u6210\u679c\u7269                                         \u2502\r\n\u2514\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2500\u2518<\/code><\/pre>\r\n<\/div>\r\n<b>\u5404\u30ec\u30a4\u30e4\u30fc\u306e\u5f79\u5272\u3068\u8a2d\u8a08\u30dd\u30a4\u30f3\u30c8<\/b>\r\n<b>1. STAGING LAYER (stg)<\/b>\r\n<p>\u300c\u30c7\u30fc\u30bf\u30bd\u30fc\u30b9\u3092\u305d\u306e\u307e\u307e\u6620\u3059\u93e1\u300d\u3067\u306f\u306a\u304f\u3001\u300c\u304d\u308c\u3044\u306b\u6574\u3048\u3089\u308c\u305f\u7d20\u6750\u300d\u3092\u4f5c\u308b\u5c64\u3067\u3059\u3002 DMBOK\u3067\u8a00\u3046\u300c\u30c7\u30fc\u30bf\u54c1\u8cea\u300d\u306e\u7b2c\u4e00\u95a2\u9580\u3067\u3059\u3002\u3053\u3053\u3067\u30c7\u30fc\u30bf\u578b\u3084NULL\u306e\u6271\u3044\u3092\u7d71\u4e00\u3057\u3066\u304a\u304b\u306a\u3044\u3068\u3001\u5f8c\u306eOBT\u4f5c\u6210\u6642\u306b\u7d50\u5408\u30ad\u30fc\u304c\u30ba\u30ec\u308b\u7b49\u306e\u554f\u984c\u304c\u767a\u751f\u3057\u307e\u3059\u3002<\/p>\r\n<b>2. INTERMEDIATE LAYER (int)<\/b>\r\n<p>\u3053\u3053\u3067\u300c\u8ad6\u7406\u30e2\u30c7\u30eb\u300d\u3092\u7d44\u307f\u7acb\u3066\u307e\u3059\u3002 OBT\u3092\u4f5c\u308b\u304b\u3089\u3068\u3044\u3063\u3066\u3001\u3044\u304d\u306a\u308a\u5168\u3066\u3092\u7d50\u5408\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u4e00\u5ea6\u300c\u6ce8\u6587\u5358\u4f4d\u300d\u300c\u9867\u5ba2\u5358\u4f4d\u300d\u306a\u3069\u3067\u30c7\u30fc\u30bf\u3092\u610f\u5473\u306e\u3042\u308b\u7c92\u5ea6\u306b\u307e\u3068\u3081\u307e\u3059\u3002\u3053\u306e\u5c64\u304c\u3042\u308b\u3053\u3068\u3067\u3001\u3082\u3057OBT\u306e\u5b9a\u7fa9\u304c\u5909\u308f\u3063\u3066\u3082\u3001\u30ed\u30b8\u30c3\u30af\u306e\u4fee\u6b63\u7bc4\u56f2\u3092\u5c40\u6240\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\r\n<b>3. MART LAYER (mart) &#8211; OBT\u306e\u5b8c\u6210<\/b>\r\n<p>\u3053\u3053\u3067\u7269\u7406\u7684\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u6700\u9069\u5316\u3092\u884c\u3044\u307e\u3059\u3002 BigQuery\u306b\u304a\u3051\u308bOBT\u8a2d\u8a08\u306e\u809d\u306f\u300c\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u300d\u3068\u300c\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u300d\u3067\u3059\u3002 \u4f8b\u3048\u3070\u3001<code>order_date<\/code>\u3067\u30d1\u30fc\u30c6\u30a3\u30b7\u30e7\u30f3\u3092\u5207\u308a\u3001<code>customer_id<\/code>\u3084<code>product_category<\/code>\u3067\u30af\u30e9\u30b9\u30bf\u30ea\u30f3\u30b0\u3092\u884c\u3046\u3053\u3068\u3067\u3001\u6570\u5104\u884c\u306eOBT\u3067\u3042\u3063\u3066\u3082\u30b9\u30ad\u30e3\u30f3\u91cf\u3092\u6291\u3048\u3001\u9ad8\u901f\u306b\u691c\u7d22\u53ef\u80fd\u306a\u72b6\u614b\u3092\u4f5c\u308a\u4e0a\u3052\u307e\u3059\u3002<\/p>\r\n<p>\u307e\u305f\u3001BigQuery\u7279\u6709\u306e\u6a5f\u80fd\u3068\u3057\u3066\u300cNested Fields (RECORD\/STRUCT\u578b)\u300d\u306e\u6d3b\u7528\u3082\u691c\u8a0e\u3057\u3066\u304f\u3060\u3055\u3044\u30021\u884c\u306b\u5bfe\u3057\u3066\u8907\u6570\u306e\u660e\u7d30\uff081\u5bfeN\u306e\u95a2\u4fc2\uff09\u3092\u6301\u305f\u305b\u308b\u5834\u5408\u3001\u7121\u7406\u306b\u884c\u3092\u5897\u3084\u3055\u305a\u3001ARRAY\u578b\u3068\u3057\u3066\u30cd\u30b9\u30c8\u3055\u305b\u308b\u3053\u3068\u3067\u3001OBT\u306e\u53ef\u8aad\u6027\u3092\u4fdd\u3061\u3064\u3064\u60c5\u5831\u3092\u96c6\u7d04\u3067\u304d\u307e\u3059\u3002<\/p>\r\n<p><!-- notionvc: fd681dcb-25d3-4b16-804a-d07b9cb0f88b --><\/p>\r\n<p><!-- notionvc: ebe8b118-2e9e-4c4b-82ed-ed59d5df1c23 --><\/p>\n\n<h2>\u307e\u3068\u3081<\/h2>\n<p>DMBOK\u304c\u6559\u3048\u308b\u901a\u308a\u3001\u30c7\u30fc\u30bf\u30de\u30cd\u30b8\u30e1\u30f3\u30c8\u306e\u76ee\u7684\u306f\u300c\u30c7\u30fc\u30bf\u304b\u3089\u4fa1\u5024\u3092\u5f15\u304d\u51fa\u3059\u3053\u3068\u300d\u3067\u3059\u3002<\/p>\r\n<p>\u300c\u6b63\u898f\u5316\u3053\u305d\u304c\u7f8e\u3057\u3044\u300d\u3068\u3044\u3046RDB\u6642\u4ee3\u306e\u56fa\u5b9a\u89b3\u5ff5\u306b\u3068\u3089\u308f\u308c\u305a\u3001BigQuery\u3068\u3044\u3046\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306e\u7279\u6027\u3092\u6700\u5927\u9650\u306b\u6d3b\u304b\u3059\u305f\u3081\u306bOBT\u3092\u63a1\u7528\u3059\u308b\u3002\u305d\u308c\u306f\u3001\u300c\u5206\u6790\u307e\u3067\u306e\u30ea\u30fc\u30c9\u30bf\u30a4\u30e0\u77ed\u7e2e\u300d\u3084\u300c\u30af\u30a8\u30ea\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5411\u4e0a\u300d\u3068\u3044\u3046\u30d3\u30b8\u30cd\u30b9\u4fa1\u5024\u306b\u76f4\u7d50\u3057\u307e\u3059\u3002<\/p>\r\n<p>\u3053\u308c\u304b\u3089\u30c7\u30fc\u30bf\u57fa\u76e4\u3092\u69cb\u7bc9\u3001\u3042\u308b\u3044\u306f\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3059\u308b\u969b\u306f\u3001\u305c\u3072\u3053\u306e3\u5c64\u69cb\u9020\u3092\u7528\u3044\u305fOBT\u30e2\u30c7\u30eb\u306e\u5c0e\u5165\u3092\u691c\u8a0e\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\r\n<p><!-- notionvc: 538dd0a7-1463-4a43-8ead-3f5beab82e0d --><\/p>","protected":false},"excerpt":{"rendered":"<p>\u300cBI\u63cf\u753b\u304c\u9045\u3044\u300d\u300cJOIN\u304c\u96e3\u3057\u3044\u300d\u2026\u305d\u306e\u60a9\u307f\u3001BigQuery\u00d7OBT\u3067\u89e3\u6c7a\u3057\u307e\u305b\u3093\u304b\uff1fDMBOK\u306e\u57fa\u790e\u3092\u62bc\u3055\u3048\u3064\u3064\u3001\u5de8\u5927\u306a\u4e00\u679a\u30c6\u30fc\u30d6\u30eb\uff08OBT\uff09\u3092\u4f5c\u6210\u3059\u308b\u5177\u4f53\u7684\u306a3\u5c64\u8a2d\u8a08\u30d5\u30ed\u30fc\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002\u30b3\u30b9\u30c8\u524a\u6e1b\u3068\u30c7\u30fc\u30bf\u6c11\u4e3b\u5316 [&hellip;]<\/p>\n","protected":false},"author":89,"featured_media":6178,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"content-type":"","swell_btn_cv_data":"","footnotes":"","_wp_rev_ctl_limit":""},"categories":[1249],"tags":[108,674,864],"class_list":["post-7592","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-knowledge","tag-bigquery","tag-674","tag-864"],"_links":{"self":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts\/7592","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/users\/89"}],"replies":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/comments?post=7592"}],"version-history":[{"count":0,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/posts\/7592\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/media\/6178"}],"wp:attachment":[{"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/media?parent=7592"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/categories?post=7592"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/since2020.jp\/media\/wp-json\/wp\/v2\/tags?post=7592"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}