{"id":7160,"date":"2016-06-16T20:11:43","date_gmt":"2016-06-17T05:11:43","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-29T15:00:00","slug":"","status":"publish","type":"post","link":"http:\/\/w3devlabs.net\/wp\/?p=7160","title":{"rendered":"[\uc815\ubcf4\ud1b5\uc2e0\uc6a9\uc5b4] \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4"},"content":{"rendered":"<p><h1>relational database  &#8211;  \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4<\/h1>\n<\/p>\n<p>\uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294 1970\ub144\uc5d0 IBM\uc758 E. F. Codd\uc5d0 \uc758\ud574 \uac1c\ubc1c\ub418\uc5c8\ub2e4. \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294 \uc77c\ub828\uc758 \uc815\ud615\ud654\ub41c \ud14c\uc774\ube14\ub85c \uad6c\uc131\ub41c \ub370\uc774\ud130 \ud56d\ubaa9\ub4e4\uc758 \uc9d1\ud569\uccb4\ub85c\uc11c, \uadf8 \ub370\uc774\ud130\ub4e4\uc740 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud14c\uc774\ube14\uc744 \uc7ac\uad6c\uc131\ud558\uc9c0 \uc54a\ub354\ub77c\ub3c4 \ub2e4\uc591\ud55c \ubc29\ubc95\uc73c\ub85c \uc811\uadfc\ud558\uac70\ub098 \uc870\ud569\ub420 \uc218 \uc788\ub2e4. \uc0ac\uc6a9\uc790\uc640 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \uc5f0\uacb0\uc2dc\ucf1c\uc8fc\ub294 \ud45c\uc900 \uac80\uc0c9\uc5b8\uc5b4\ub97c SQL \uc774\ub77c\uace0 \ud558\ub294\ub370, SQL \ubb38\uc7a5\uc740 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \uc788\ub294 \ub370\uc774\ud130\ub97c \uc9c1\uc811 \uc870\ud68c\ud558\uac70\ub098 \ub610\ub294 \ubcf4\uace0\uc11c\ub97c \ucd94\ucd9c\ud558\ub294\ub370 \uc0ac\uc6a9\ub41c\ub2e4. \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294 \ub9cc\ub4e4\uac70\ub098 \uc774\uc6a9\ud558\uae30\uac00 \ube44\uad50\uc801 \uc27d\uc9c0\ub9cc, \ubb34\uc5c7\ubcf4\ub2e4\ub3c4 \ud655\uc7a5\uc774 \uc6a9\uc774\ud558\ub2e4\ub294 \uc7a5\uc810\uc744 \uac00\uc9c0\uace0 \uc788\ub2e4. \ucc98\uc74c \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \ub9cc\ub4e0 \ud6c4 \uad00\ub828\ub418\ub294 \uc751\uc6a9\ud504\ub85c\uadf8\ub7a8\ub4e4\uc744 \ubcc0\uacbd\ud558\uc9c0 \uc54a\uace0\ub3c4, \uc0c8\ub85c\uc6b4 \ub370\uc774\ud130 \ud56d\ubaa9\uc744 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \ucd94\uac00\ud560 \uc218 \uc788\ub2e4 (\ud30c\uc77c\uc774\ub098 \ub124\ud2b8\uc6cd \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ub4f1, \uadf8 \uc774\uc804\uc758 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub4e4\uc740 \ud56d\ubaa9\uc774 \uc218\uc815\ub418\uba74, \uadf8 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \uc0ac\uc6a9\ud558\ub294 \ubaa8\ub4e0 \uc751\uc6a9 \ud504\ub85c\uadf8\ub7a8\ub3c4 \ud568\uaed8 \uc218\uc815\ud574\uc57c\ud558\ub294 \uc5b4\ub824\uc6c0\uc774 \uc788\uc5c8\ub2e4). \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294 \ubbf8\ub9ac \uc815\uc758\ub41c \ub0b4\uc6a9\uc5d0 \ub530\ub77c \ud14c\uc774\ube14\ub4e4\uc774 \uad6c\uc131\ub418\ub294\ub370, \uac01 \ud14c\uc774\ube14\uc740 \ub370\uc774\ud130 \uc885\ub958\ub098 \uc131\uaca9\uc5d0 \ub530\ub77c \uc5ec\ub7ec \uac1c\uc758 \uceec\ub7fc\uc774 \ud3ec\ud568\ub420 \uc218 \uc788\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc8fc\ubb38\uac70\ub798 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\ub294 \uc131\uba85, \uc8fc\uc18c, \uc804\ud654\ubc88\ud638 \ub4f1\uc758 \uceec\ub7fc \ud56d\ubaa9\uc73c\ub85c \uad6c\uc131\ub41c \ud14c\uc774\ube14\uacfc \ub610\ud55c \uc8fc\ubb38\ub0b4\uc6a9(\uc81c\ud488, \uace0\uac1d, \uc77c\uc790, \ud310\ub9e4\uac00\uaca9 \ub4f1)\uc744 \ub098\ud0c0\ub0b4\ub294 \ud14c\uc774\ube14\uc774 \ud3ec\ud568\ub420 \uac83\uc774\uba70, \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc0ac\uc6a9\uc790\ub294 \uc0ac\uc6a9\uc790\uc758 \ud544\uc694\uc5d0 \ub9de\ub294 \ud615\ud0dc\ub85c \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758 \ub0b4\uc6a9\uc744 \ubcfc \uc218 \uc788\ub2e4. \ub610\ud55c, \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \uad6c\ucd95\ud560 \ub54c \ub370\uc774\ud130 \uceec\ub7fc\uc774 \uac00\uc9c8 \uc218 \uc788\ub294 \uac12\uc758 \ubc94\uc704\ub098, \uadf8 \uac12\uc5d0 \uc801\uc6a9\ub420 \uc218 \uc788\ub294 \uc81c\ud55c\uc0ac\ud56d\uc744 \uc815\uc758\ud560 \uc218 \uc788\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uace0\uac1d\uc758 \uc131\uba85\uc744 \ube48 \uce78\uc73c\ub85c \ub0a8\uaca8 \ub193\uc9c0 \ubabb\ud558\uac8c \ud55c\ub2e4\uac70\ub098, \ud310\ub9e4\uac00\uaca9\uc5d0\ub294 \ub9c8\uc774\ub108\uc2a4(-) \uac12\uc774 \uc62c \uc218 \uc5c6\ub3c4\ub85d \uc81c\ud55c\ud560 \uc218 \uc788\ub2e4. \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \uc815\uc758\ud558\uac8c \ub418\uba74 \uadf8 \ud14c\uc774\ube14\uc774\ub098 \uceec\ub7fc, \ub3c4\uba54\uc778 \ubc0f \uc81c\ud55c\uc0ac\ud56d\uc5d0 \ub300\ud55c \ub0b4\uc6a9\uc744 \uac00\uc9c4 \uba54\ud0c0 \ub370\uc774\ud130 \ud14c\uc774\ube14\uc774 \ud568\uaed8 \ub9cc\ub4e4\uc5b4\uc9c4\ub2e4.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>relational database &#8211; \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294 1970\ub144\uc5d0 IBM\uc758 E. F. Codd\uc5d0 \uc758\ud574 \uac1c\ubc1c\ub418\uc5c8\ub2e4. \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294 \uc77c\ub828\uc758 \uc815\ud615\ud654\ub41c \ud14c\uc774\ube14\ub85c \uad6c\uc131\ub41c \ub370\uc774\ud130 \ud56d\ubaa9\ub4e4\uc758 \uc9d1\ud569\uccb4\ub85c\uc11c, \uadf8 \ub370\uc774\ud130\ub4e4\uc740 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud14c\uc774\ube14\uc744 \uc7ac\uad6c\uc131\ud558\uc9c0 \uc54a\ub354\ub77c\ub3c4 \ub2e4\uc591\ud55c \ubc29\ubc95\uc73c\ub85c \uc811\uadfc\ud558\uac70\ub098 \uc870\ud569\ub420 \uc218 \uc788\ub2e4. \uc0ac\uc6a9\uc790\uc640 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \uc5f0\uacb0\uc2dc\ucf1c\uc8fc\ub294 \ud45c\uc900 \uac80\uc0c9\uc5b8\uc5b4\ub97c SQL \uc774\ub77c\uace0 \ud558\ub294\ub370, SQL \ubb38\uc7a5\uc740 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \uc788\ub294 \ub370\uc774\ud130\ub97c \uc9c1\uc811 \uc870\ud68c\ud558\uac70\ub098 \ub610\ub294 \ubcf4\uace0\uc11c\ub97c \ucd94\ucd9c\ud558\ub294\ub370 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"http:\/\/w3devlabs.net\/wp\/?p=7160\" class=\"more-link\">\ub354 \ubcf4\uae30<span class=\"screen-reader-text\"> &#8220;[\uc815\ubcf4\ud1b5\uc2e0\uc6a9\uc5b4] \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[5922],"tags":[5921],"class_list":["post-7160","post","type-post","status-publish","format-standard","hentry","category-5922","tag-5921","entry"],"_links":{"self":[{"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/7160","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7160"}],"version-history":[{"count":0,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=\/wp\/v2\/posts\/7160\/revisions"}],"wp:attachment":[{"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7160"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7160"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/w3devlabs.net\/wp\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7160"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}