{"id":66157,"date":"2025-06-19T18:57:59","date_gmt":"2025-06-19T09:57:59","guid":{"rendered":"https:\/\/adtechmanagement.com\/minnadepr-column\/?p=66157"},"modified":"2025-06-19T18:57:59","modified_gmt":"2025-06-19T09:57:59","slug":"relation-meaning-2","status":"publish","type":"post","link":"https:\/\/adtechmanagement.com\/minnadepr-column\/2025\/06\/19\/relation-meaning-2\/","title":{"rendered":"\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3068\u306f\uff5cDB\u30fb\u6570\u7406\u30fb\u30d3\u30b8\u30cd\u30b9\u3067\u306e\u610f\u5473\u30fb\u6d3b\u7528\u3092\u5fb9\u5e95\u89e3\u8aac"},"content":{"rendered":"

\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\uff08relation\uff09\u306f\u5358\u306b\u300c\u95a2\u4fc2\u300d\u3092\u610f\u5473\u3059\u308b\u8a00\u8449\u3067\u3059\u304c\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3001\u6570\u5b66\u3001\u30d3\u30b8\u30cd\u30b9\u3067\u306e\u4f7f\u308f\u308c\u65b9\u306f\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u57fa\u672c\u7684\u306a\u610f\u5473\u304b\u3089\u5177\u4f53\u7684\u306a\u6d3b\u7528\u4f8b\u3001\u985e\u8a9e\u3068\u306e\u9055\u3044\u307e\u3067\u5e45\u5e83\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n

1.\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u57fa\u672c\u7684\u306a\u610f\u5473<\/h2>\n

1-1.\u4e00\u822c\u7684\u306a\u300c\u95a2\u4fc2\u6027\u300d\u3068\u3057\u3066\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3<\/h3>\n

\u65e5\u5e38\u8a9e\u3068\u3057\u3066\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u3001\u4eba\u3068\u4eba\u3001\u7269\u4e8b\u540c\u58eb\u306e\u76f8\u4e92\u306e\u3064\u306a\u304c\u308a\u3084\u95a2\u9023\u6027\u3092\u793a\u3057\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u300c\u9867\u5ba2\u3068\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u5f37\u5316\u3059\u308b\u300d\u306f\u4eba\u9593\u95a2\u4fc2\u306e\u6df1\u307e\u308a\u3092\u610f\u5473\u3057\u307e\u3059\u3002 <\/p>\n

1-2.\u82f1\u8a9e\u3068\u3057\u3066\u306e\u4f7f\u3044\u65b9<\/h3>\n

\u82f1\u8a9e\u306e relation \u306f\u300c\u95a2\u4fc2\u300d\u300c\u95a2\u9023\u6027\u300d\u3092\u793a\u3059\u540d\u8a5e\u3067\u3001\u300cin relation to\u301c\uff08\u301c\u306b\u95a2\u3057\u3066\uff09\u300d\u306a\u3069\u306e\u8868\u73fe\u3067\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n

2.\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u5206\u91ce\u3067\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3<\/h2>\n

2-1.\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30e2\u30c7\u30eb\u306b\u304a\u3051\u308b\u5b9a\u7fa9<\/h3>\n

\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30ca\u30eb\u30e2\u30c7\u30eb\u3067\u306f\u3001\u30c6\u30fc\u30d6\u30eb\u5f62\u5f0f\u306e\u30c7\u30fc\u30bf\u69cb\u9020\u3092\u300crelation\u300d\u3068\u547c\u3073\u307e\u3059\u3002\u884c\uff08tuple\uff09\u3068\u5217\uff08attribute\uff09\u304b\u3089\u69cb\u6210\u3055\u308c\u3001\u4e00\u3064\u306e\u8868\u306f\u4e00\u3064\u306e relation \u3067\u3059 :contentReference[oaicite:3]{index=3}\u3002 <\/p>\n

2-2.tuple \u3068 attribute \u306e\u95a2\u4fc2<\/h3>\n

\u5404\u884c\uff08tuple\uff09\u306f\u5c5e\u6027\u540d\u3067\u5b9a\u7fa9\u3055\u308c\u305f\u5217\u306b\u5bfe\u5fdc\u3057\u3001relation \u306e\u69cb\u9020\uff08heading\uff09\u3068\u5185\u5bb9\uff08body\uff09\u304b\u3089\u69cb\u6210\u3055\u308c\u307e\u3059 :contentReference[oaicite:4]{index=4}\u3002 <\/p>\n

2-3.\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u7a2e\u985e\u3068\u69cb\u6587\uff081:N\u30fbN:M\u306a\u3069\uff09<\/h3>\n

\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u30c6\u30fc\u30d6\u30eb\u540c\u58eb\u306e\u3064\u306a\u304c\u308a\u3092\u69d8\u3005\u306a\u5f62\u3067\u8868\u3057\u307e\u3059\u3002\u4e00\u5bfe\u591a\uff081:N\uff09\u306f\u3001\u89aa\u30c6\u30fc\u30d6\u30eb\u3068\u5b50\u30c6\u30fc\u30d6\u30eb\u9593\u306e\u5916\u90e8\u30ad\u30fc\u95a2\u4fc2\u3001N:M \u306f\u4e2d\u9593\u30c6\u30fc\u30d6\u30eb\u3067\u8868\u73fe\u3057\u307e\u3059 :contentReference[oaicite:5]{index=5}\u3002<\/p>\n

3.\u6570\u5b66\u306b\u304a\u3051\u308b\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3<\/h2>\n

3-1.\u96c6\u5408\u3068\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u5b9a\u7fa9<\/h3>\n

\u6570\u5b66\u7684\u306b\u306f\u3001\u96c6\u5408 A \u3068 B \u306e\u8981\u7d20\u3092\u95a2\u9023\u3065\u3051\u308b\u5bfe\u5fdc\u95a2\u4fc2\uff08R\uff09\u306f\u3001A \u00d7 B \u306e\u90e8\u5206\u96c6\u5408\u3068\u5b9a\u7fa9\u3055\u308c\u307e\u3059 :contentReference[oaicite:6]{index=6}\u3002 <\/p>\n

3-2.\u300c\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u300d\u3068\u300c\u95a2\u4fc2\u300d\u306e\u9055\u3044<\/h3>\n

\u96c6\u5408\u306e\u30da\u30a2\u3092\u5217\u6319\u3057\u305f\u5177\u4f53\u7684\u306a\u96c6\u5408\uff08\u4f8b\uff1a{(x,y)\u2026}\uff09\u304c\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3067\u3042\u308a\u3001\u305d\u306e\u4e2d\u3067 x \u3068 y \u304c\u7d50\u3070\u308c\u308b\u4ed5\u7d44\u307f\u305d\u306e\u3082\u306e\u304c\u300c\u95a2\u4fc2\u300d\u3067\u3059 :contentReference[oaicite:7]{index=7}\u3002<\/p>\n

4.\u30d3\u30b8\u30cd\u30b9\u3084\u7d44\u7e54\u306b\u304a\u3051\u308b\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u6d3b\u7528<\/h2>\n

4-1.\u9867\u5ba2\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\uff08CRM\uff09<\/h3>\n

\u9867\u5ba2\u3068\u306e\u95a2\u4fc2\u6027\uff08\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\uff09\u3092\u7bc9\u304d\u3001\u7dad\u6301\u30fb\u6df1\u5316\u3055\u305b\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\u3092 CRM \u3068\u8a00\u3044\u3001\u9867\u5ba2\u6e80\u8db3\u5ea6\u5411\u4e0a\u3084\u30ed\u30a4\u30e4\u30eb\u30c6\u30a3\u7372\u5f97\u306b\u6d3b\u7528\u3055\u308c\u307e\u3059\u3002 <\/p>\n

4-2.\u793e\u5185\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3<\/h3>\n

\u90e8\u7f72\u9593\u3084\u4e0a\u53f8\u90e8\u4e0b\u9593\u306e\u826f\u597d\u306a\u95a2\u4fc2\u69cb\u7bc9\u3082\u300c\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u300d\u3068\u547c\u3070\u308c\u3001\u7d44\u7e54\u306e\u5354\u529b\u4f53\u5236\u3084\u60c5\u5831\u5171\u6709\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n

5.\u985e\u8a9e\u3068\u306e\u9055\u3044<\/h2>\n

5-1.\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3068\u95a2\u4fc2\u6027<\/h3>\n

\u95a2\u4fc2\u6027\u306f\u3088\u308a\u5e83\u3044\u610f\u5473\u3067\u3059\u304c\u3001\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u3042\u308b\u7a2e\u306e\u5f62\u5f0f\u3084\u7d50\u3073\u3064\u304d\u3068\u3044\u3046\u30cb\u30e5\u30a2\u30f3\u30b9\u3092\u542b\u307f\u307e\u3059\u3002\u7279\u306b\u5236\u5ea6\u3084\u30e2\u30c7\u30eb\u306b\u304a\u3044\u3066\u306f\u5f8c\u8005\u304c\u597d\u3093\u3067\u4f7f\u308f\u308c\u307e\u3059\u3002 <\/p>\n

5-2.\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3068\u30cd\u30c3\u30c8\u30ef\u30fc\u30af<\/h3>\n

\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u306f\u30ce\u30fc\u30c9\u3068\u30ea\u30f3\u30af\u306e\u69cb\u9020\u3092\u793a\u3057\u307e\u3059\u304c\u3001\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u500b\u3005\u306e\u7d50\u3073\u3064\u304d\u3084\u5bfe\u5fdc\u306e\u4ed5\u7d44\u307f\u3092\u793a\u3057\u3001\u62bd\u8c61\u5ea6\u304c\u7570\u306a\u308a\u307e\u3059\u3002<\/p>\n

6.\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u6b63\u3057\u304f\u4f7f\u3046\u30dd\u30a4\u30f3\u30c8<\/h2>\n

6-1.\u6587\u8108\u306b\u5fdc\u3058\u305f\u9069\u5207\u306a\u7528\u8a9e\u9078\u629e<\/h3>\n

\u30fbIT\u5206\u91ce\u3067\u306f\u300c\u30c6\u30fc\u30d6\u30eb\u300d\u300c\u5916\u90e8\u30ad\u30fc\u300d\u306a\u3069\u306e\u6280\u8853\u8a9e\u3067\u660e\u793a \u30fb\u6570\u5b66\u3067\u306f\u300cA\u00d7B \u306e\u90e8\u5206\u96c6\u5408\u300d\u306a\u3069\u3068\u6b63\u3057\u304f\u5b9a\u7fa9 \u30fb\u30d3\u30b8\u30cd\u30b9\u3067\u306f\u300c\u76f8\u624b\u3068\u306e\u95a2\u4fc2\u6027\u5f37\u5316\u300d\u3068\u3057\u3066\u4f1d\u3048\u308b <\/p>\n

6-2.\u66d6\u6627\u306a\u4f7f\u3044\u65b9\u3092\u907f\u3051\u308b<\/h3>\n

\u300c\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u304c\u96e3\u3057\u3044\u300d\u306a\u3069\u306e\u8868\u73fe\u306f\u5c02\u9580\u5916\u3067\u306f\u4f1d\u308f\u308a\u306b\u304f\u304f\u3001\u81ea\u5206\u304c\u4f55\u3092\u6307\u3057\u3066\u3044\u308b\u304b\u3092\u660e\u793a\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n

7.\u307e\u3068\u3081<\/h2>\n

\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306f\u300c\u95a2\u4fc2\u6027\u300d\u306e\u4e2d\u3067\u3082\u5c02\u9580\u7684\u30fb\u4f53\u7cfb\u7684\u306a\u610f\u5473\u3092\u542b\u3093\u3067\u304a\u308a\u3001IT\u30fb\u6570\u5b66\u30fb\u30d3\u30b8\u30cd\u30b9\u306a\u3069\u591a\u69d8\u306a\u5206\u91ce\u3067\u4f7f\u308f\u308c\u307e\u3059\u3002\u6587\u8108\u306b\u5fdc\u3058\u3066\u7406\u89e3\u3068\u4f7f\u3044\u5206\u3051\u304c\u3067\u304d\u308c\u3070\u3001\u8868\u73fe\u529b\u3068\u5c02\u9580\u6027\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\uff08relation\uff09\u306f\u5358\u306b\u300c\u95a2\u4fc2\u300d\u3092\u610f\u5473\u3059\u308b\u8a00\u8449\u3067\u3059\u304c\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u3001\u6570\u5b66\u3001\u30d3\u30b8\u30cd\u30b9\u3067\u306e\u4f7f\u308f\u308c\u65b9\u306f\u591a\u5c90\u306b\u308f\u305f\u308a\u307e\u3059\u3002\u672c\u8a18\u4e8b\u3067\u306f\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u57fa\u672c\u7684\u306a\u610f\u5473\u304b\u3089\u5177\u4f53\u7684\u306a\u6d3b\u7528\u4f8b\u3001\u985e\u8a9e\u3068\u306e\u9055\u3044\u307e\u3067\u5e45\u5e83\u304f\u89e3\u8aac\u3057\u307e\u3059\u3002 1.\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u306e\u57fa\u2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":"","footnotes":""},"categories":[33],"tags":[],"class_list":["post-66157","post","type-post","status-publish","format-standard","hentry","category-business"],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/posts\/66157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/comments?post=66157"}],"version-history":[{"count":1,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/posts\/66157\/revisions"}],"predecessor-version":[{"id":66158,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/posts\/66157\/revisions\/66158"}],"wp:attachment":[{"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/media?parent=66157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/categories?post=66157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/adtechmanagement.com\/minnadepr-column\/wp-json\/wp\/v2\/tags?post=66157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}