{"id":917,"date":"2015-12-28T10:37:07","date_gmt":"2015-12-28T10:37:07","guid":{"rendered":"http:\/\/haisins.epac.to\/wordpress\/?p=917"},"modified":"2018-06-26T16:19:11","modified_gmt":"2018-06-26T07:19:11","slug":"%e3%84%b4%ec%a0%9c1%ec%9e%a5-sql-%ea%b8%b0%eb%b3%b8%ec%a0%9c1%ec%a0%88-%ea%b4%80%ea%b3%84%ed%98%95-%eb%8d%b0%ec%9d%b4%ed%84%b0%eb%b2%a0%ec%9d%b4%ec%8a%a4-%ea%b0%9c%ec%9a%94","status":"publish","type":"post","link":"http:\/\/haisins.synology.me\/wordpress\/?p=917","title":{"rendered":"\u3134\uc81c1\uc7a5 SQL \uae30\ubcf8_\uc81c1\uc808 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uac1c\uc694"},"content":{"rendered":"
    \n
  1. \ub370\uc774\ud130\ubca0\uc774\uc2a4<\/span>
    \n<\/span><\/li>\n<\/ol>\n
      \n
    • \ub113\uc740\u00a0<\/span>\uc758\ubbf8\uc5d0\uc11c\uc758\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294\u00a0<\/span>\uc77c\uc0c1\uc801\uc778\u00a0<\/span>\uc815\ubcf4\ub4e4\uc744<\/span>\ubaa8\uc544\u00a0<\/span>\ub193\uc740\u00a0<\/span>\uac83\u00a0<\/span>\uc790\uccb4\ub97c<\/span>\uc758\ubbf8\ud55c\ub2e4<\/span>.<\/span><\/li>\n
    • \uadf8\ub7ec\ub098\u00a0<\/span>\uc77c\ubc18\uc801\uc73c\ub85c\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\ub77c\uace0\u00a0<\/span>\ub9d0\ud560\u00a0<\/span>\ub584\ub294\u00a0<\/span>\ud2b9\uc815\u00a0<\/span>\uae30\uc5c5\uc774\ub098\u00a0<\/span>\uc870\uc9c1\u00a0<\/span>\ub610\ub294\u00a0<\/span>\uac1c\uc778\uc774\u00a0<\/span>\ud544\uc694\uc5d0\u00a0<\/span>\uc758\ud574<\/span>(ex : \ubd80\uac00\uac00\uce58\u00a0<\/span>\ubc1c\uc0dd<\/span>) \ub370\uc774\ud130\ub97c\u00a0<\/span>\uc77c\uc815\ud55c\u00a0<\/span>\ud615\ud0dc\ub85c\u00a0<\/span>\uc800\uc7a5\ud574\u00a0<\/span>\ub193\uc740\u00a0<\/span>\uac83\uc744\u00a0<\/span>\uc758\ubbf8<\/span><\/span><\/li>\n
    • \ub9ce\uc740\u00a0<\/span>\uc0ac\uc6a9\uc790\ub4e4\uc740\u00a0<\/span>\ubcf4\ub2e4\u00a0<\/span>\ud6a8\uc728\uc801\uc778\u00a0<\/span>\ub370\uc774\ud130\uc758\u00a0<\/span>\uad00\ub9ac\u00a0<\/span>\ubfd0\ub9cc\u00a0<\/span>\uc544\ub2c8\ub77c\u00a0<\/span>\uc608\uae30\uce58\u00a0<\/span>\ubabb\ud55c\u00a0<\/span>\uc0ac\uac74\uc73c\ub85c\u00a0<\/span>\uc778\ud55c\u00a0<\/span>\ub370\uc774\ud130\uc758\u00a0<\/span>\uc190\uc0c1\uc744<\/span>
      \n\ud53c\ud558\uace0<\/span>, \ud544\uc694\uc2dc\u00a0<\/span>\ud544\uc694\ud55c\u00a0<\/span>\ub370\uc774\ud130\ub97c\u00a0<\/span>\ubcf5\uad6c\ud558\uae30\u00a0<\/span>\uc704\ud55c\u00a0<\/span>\uac15\ub825\ud55c\u00a0<\/span>\uae30\ub2a5\uc758\u00a0\u00a0<\/span>\uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c\u00a0<\/span>\ud544\uc694\ub85c\u00a0<\/span>\ud558\uac8c\u00a0<\/span>\ub418\uc5c8\uace0\u00a0<\/span>\uc774\ub7ec\ud55c\u00a0<\/span>\uae30\ubcf8\uc801\uc778\u00a0<\/span>\uc694\uad6c\uc0ac\ud56d\uc744\u00a0<\/span>\ub9cc\uc871\uc2dc\ucf1c\uc8fc\ub294\u00a0<\/span>\uc2dc\uc2a4\ud15c\uc744<\/span> DBMS(Database Management System)\ub77c\uace0\u00a0<\/span>\ud55c\ub2e4<\/span>.<\/span><\/li>\n
    • \n
      \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758<\/span>\ubc1c\uc804<\/span><\/div>\n
        \n

      • \n1960\ub144\ub300 : \ud50c\ub85c\uc6b0\ucc28\ud2b8 \uc911\uc2ec\uc758 \uac1c\ubc1c \ubc29\ubc95\uc744 \uc0ac\uc6a9\ud558\uc600\uc73c\uba70 \ud30c\uc77c \uad6c\uc870\ub97c \ud1b5\ud574 \ub370\uc774\ud130\ub97c \uc800\uc7a5\ud558\uace0 \uad00\ub9ac\ud558\uc600\ub2e4.<\/span><\/span><\/li>\n
      • 1970\ub144\ub300 : \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uad00\ub9ac \uae30\ubc95\uc774 \ucc98\uc74c \ud0dc\ub3d9\ub418\ub358 \uc2dc\uae30\uc600\uc73c\uba70 \uacc4\uce35\ud615(Hierarchical) \ub370\uc774\ud130\ubca0\uc774\uc2a4, \ub9dd\ud615(Network) \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uac19\uc740 \uc81c\ud488\ub4e4\uc774 \uc0c1\uc6a9\ud654 \ub418\uc5c8\ub2e4.<\/span><\/li>\n
      • 1980\ub144\ub300 : \ud604\uc7ac \ub300\ubd80\ubd84\uc758 \uae30\uc5c5\uc5d0\uc11c \uc0ac\uc6a9\ub418\uace0 \uc788\ub294 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 \uc0c1\uc6a9\ud654\ub418\uc5c8\uc73c\uba70 Oracle, Sybase, DB2\uc640 \uac19\uc740 \uc81c\ud488\uc774 \uc0ac\uc6a9\ub418\uc5c8\ub2e4.<\/span><\/li>\n
      • 1990\ub144\ub300 : Oracle, Sybase, Informix, DB2, Teradata, SQL Server \uc678 \ub9ce\uc740 \uc81c\ud488\ub4e4\uc774 \ubcf4\ub2e4 \ud5a5\uc0c1\ub41c \uae30\ub2a5\uc73c\ub85c \uc815\ubcf4\uc2dc\uc2a4\ud15c\uc758 \ud655\uc2e4\ud55c \ud575\uc2ec \uc194\ub8e8\uc158\uc73c\ub85c \uc790\ub9ac\uc7a1\uac8c \ub418\uc5c8\uc73c\uba70, \uc778\ud130\ub137 \ud658\uacbd\uc758 \uae09\uc18d\ud55c \ubc1c\uc804\uacfc \uac1d\uccb4 \uc9c0\ud5a5 \uc815\ubcf4\ub97c \uc9c0\uc6d0\ud558\uae30 \uc704\ud574 \uac1d\uccb4 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub85c \ubc1c\uc804\ud558\uc600\ub2e4.<\/span><\/li>\n<\/ul>\n<\/li>\n
      • \n
        \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4(Relational Database)<\/span><\/div>\n
          \n
        • 1970\ub144 \uc601\uad6d\uc758 \uc218\ud559\uc790 E.F. Codd \ubc15\uc0ac\uc758 \ub17c\ubb38\uc5d0\uc11c \ucc98\uc74c\uc73c\ub85c \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 \uc18c\uac1c<\/span><\/li>\n
        • \ud604\uc7ac\u00a0<\/span>\uae30\uc5c5\uc5d0\uc11c\u00a0<\/span>\uc0ac\uc6a9\ud558\uace0\u00a0<\/span>\uc788\ub294\u00a0<\/span>\ub300\ubd80\ubd84\uc758\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294\u00a0<\/span>\uae30\uc874\u00a0<\/span>\uad00\uacc4\ud615\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\u00a0<\/span>\uac1d\uccb4\u00a0<\/span>\uc9c0\uc6d0\u00a0<\/span>\uae30\ub2a5\uc744<\/span>
          \n\ucd94\uac00\ud55c\u00a0<\/span>\uac1d\uccb4\u00a0<\/span>\uad00\uacc4\ud615\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4<\/span><\/span><\/li>\n
        • \ud30c\uc77c\uc2dc\uc2a4\ud15c\uc758\u00a0<\/span>\uacbd\uc6b0<\/span>, \ud558\ub098\uc758\u00a0<\/span>\ud30c\uc77c\uc744\u00a0<\/span>\ub9ce\uc740\u00a0<\/span>\uc0ac\uc6a9\uc790\uac00\u00a0<\/span>\ub3d9\uc2dc\uc5d0\u00a0<\/span>\uac80\uc0c9\ud560\u00a0<\/span>\uc218\ub294\u00a0<\/span>\uc788\uc9c0\ub9cc\u00a0<\/span>\ub3d9\uc2dc\uc5d0\u00a0<\/span>\uc785\ub825<\/span>, \uc218\uc815<\/span>, \uc0ad\uc81c\ud560\u00a0<\/span>\uc218\u00a0<\/span>\uc5c6\uae30\u00a0<\/span>\ub54c\ubb38\uc5d0\u00a0<\/span>\uc815\ubcf4\uc758\u00a0<\/span>\uad00\ub9ac\uac00\u00a0<\/span>\uc5b4\ub824\uc6c0<\/span><\/span><\/li>\n
        • \uc774\ub7ec\ud55c\u00a0<\/span>\ubb38\uc81c\uc5d0\u00a0<\/span>\ub300\ud574\u00a0<\/span>\uad00\uacc4\ud615\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294\u00a0<\/span>\uc815\uaddc\ud654\ub97c\u00a0<\/span>\ud1b5\ud55c\u00a0<\/span>\ud569\ub9ac\uc801\uc778\u00a0<\/span>\ud14c\uc774\ube14\u00a0<\/span>\ubaa8\ub378\ub9c1\uc744\u00a0<\/span>\ud1b5\ud574\u00a0<\/span>\uc774\uc0c1\ud604\uc0c1\uc744\u00a0<\/span>\uc81c\uac70\ud558\uace0\u00a0<\/span>\ub370\uc774\ud130\u00a0<\/span>\uc911\ubcf5\uc744\u00a0<\/span>\ud53c\ud560\u00a0<\/span>\uc218\u00a0<\/span>\uc788\uc73c\uba70<\/span>, \ub3d9\uc2dc\uc131\u00a0<\/span>\uad00\ub9ac<\/span>, \ubcd1\ud589\u00a0<\/span>\uc81c\uc5b4\ub97c<\/span>
          \n\ud1b5\ud574\u00a0<\/span>\ub9ce\uc740\u00a0<\/span>\uc0ac\uc6a9\uc790\ub4e4\uc774\u00a0<\/span>\ub3d9\uc2dc\uc5d0\u00a0<\/span>\ub370\uc774\ud130\ub97c\u00a0<\/span>\uacf5\uc720\u00a0<\/span>\ubc0f\u00a0<\/span>\uc870\uc791\ud560\u00a0<\/span>\uc218\u00a0<\/span>\uc788\ub294\u00a0<\/span>\uae30\ub2a5\uc744\u00a0<\/span>\uc81c\uacf5\ud558\uace0\u00a0<\/span>\uc788\ub2e4<\/span>.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n
            \n
          1. SQL(Structured Query Language)
            \n<\/span><\/li>\n<\/ol>\n
              \n
            • SQL(Structured Query Language)\uc740\u00a0<\/span>\uad00\uacc4\ud615\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\uc11c\u00a0<\/span>\ub370\uc774\ud130\u00a0<\/span>\uc815\uc758<\/span>, \ub370\uc774\ud130\u00a0<\/span>\uc870\uc791<\/span>, \ub370\uc774\ud130\u00a0<\/span>\uc81c\uc5b4\ub97c\u00a0<\/span>\ud558\uae30\u00a0<\/span>\uc704\ud574\u00a0<\/span>\uc0ac\uc6a9\ud558\ub294\u00a0<\/span>\uc5b8\uc5b4<\/span><\/span><\/li>\n
            • SQL \uad50\uc721\uc740\u00a0<\/span>\uc815\ud655\ud55c\u00a0<\/span>\ub370\uc774\ud130\ub97c\u00a0<\/span>\ucd9c\ub825\ud558\ub294\u00a0<\/span>\uac83\uc774\u00a0<\/span>\ubaa9\ud45c\uc774\uace0<\/span>, SQL \ud29c\ub2dd\uc758\u00a0<\/span>\ubaa9\uc801\uc740\u00a0<\/span>\uc2dc\uc2a4\ud15c\uc5d0\u00a0<\/span>\ud070\u00a0<\/span>\uc601\ud5a5\uc744\u00a0<\/span>\uc8fc\ub294<\/span> SQL\uc744\u00a0<\/span>\uac00\uc7a5\u00a0<\/span>\ud6a8\uacfc\uc801<\/span>(\uc751\ub2f5\uc2dc\uac04<\/span>, \uc790\uc6d0\u00a0<\/span>\ud65c\uc6a9\u00a0<\/span>\ucd5c\uc18c\ud654<\/span>)\uc73c\ub85c\u00a0<\/span>\uc791\uc131\ud558\ub294\u00a0<\/span>\uac83\uc774\u00a0<\/span>\ubaa9\ud45c\uc774\ub2e4<\/span>.<\/span><\/li>\n
            • \n
              1986\ub144\ubd80\ud130<\/span> ANSI\/ISO\ub97c\u00a0<\/span>\ud1b5\ud574\u00a0<\/span>\ud45c\uc900\ud654\u00a0<\/span>\ub418\uc5c8\uace0<\/span>, \ubca4\ub354\ub9c8\ub2e4\u00a0<\/span>\uc77c\ubd80\u00a0<\/span>\uad6c\uccb4\uc801\uc778\u00a0<\/span>\uc6a9\uc5b4\ub294\u00a0<\/span>\ub2e4\ub974\ub354\ub77c\ub3c4\u00a0<\/span>\ub300\ubd80\ubd84\uc758\u00a0<\/span>\uad00\uacc4\ud615\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\uc11c<\/span> ANSI\/ISO \ud45c\uc900\uc744\u00a0<\/span>\ucd5c\ub300\ud55c\u00a0<\/span>\ub530\ub974\uace0\u00a0<\/span>\uc788\uae30\u00a0<\/span>\ub54c\ubb38\uc5d0<\/span>, SQL\uc5d0<\/span>
              \n\ub300\ud55c\u00a0<\/span>\uc9c0\uc2dd\uc740\u00a0<\/span>\ub2e4\ub978\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c\u00a0<\/span>\uc0ac\uc6a9\ud558\ub354\ub77c\ub3c4\u00a0<\/span>\uc0c1\ub2f9\u00a0<\/span>\ubd80\ubd84\u00a0<\/span>\uae30\uc874\u00a0<\/span>\uc9c0\uc2dd\uc744\u00a0<\/span>\uc7ac\ud65c\uc6a9\ud560\u00a0<\/span>\uc218\u00a0<\/span>\uc788\ub2e4<\/span>.<\/span><\/div>\n

              \"\"<\/li>\n<\/ul>\n

                \n
              1. TABLE
                \n<\/span><\/li>\n<\/ol>\n
                  \n
                • \ub370\uc774\ud130\ub294\u00a0<\/span>\uad00\uacc4\ud615\u00a0<\/span>\ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758\u00a0<\/span>\uae30\ubcf8\u00a0<\/span>\ub2e8\uc704\uc778\u00a0<\/span>\ud14c\uc774\ube14\u00a0<\/span>\ud615\ud0dc\ub85c\u00a0<\/span>\uc800\uc7a5\ub41c\ub2e4<\/span>. \ubaa8\ub4e0\u00a0<\/span>\uc790\ub8cc\ub294\u00a0<\/span>\ud14c\uc774\ube14\uc5d0\u00a0<\/span>\ub4f1\ub85d\uc774\u00a0<\/span>\ub418\uace0<\/span>, \uc6b0\ub9ac\ub294\u00a0<\/span>\ud14c\uc774\ube14\ub85c\ubd80\ud130\u00a0<\/span>\uc6d0\ud558\ub294\u00a0<\/span>\uc790\ub8cc\ub97c\u00a0<\/span>\uaebc\ub0b4<\/span>
                  \n\uc62c\u00a0<\/span>\uc218\u00a0<\/span>\uc788\ub2e4<\/span>.<\/span><\/li>\n
                • \n
                  \ud14c\uc774\ube14\uc740\u00a0<\/span>\uc5b4\ub290\u00a0<\/span>\ud2b9\uc815\ud55c\u00a0<\/span>\uc8fc\uc81c\uc640\u00a0<\/span>\ubaa9\uc801\uc73c\ub85c\u00a0<\/span>\ub9cc\ub4e4\uc5b4\uc9c0\ub294\u00a0<\/span>\uc77c\uc885\uc758\u00a0<\/span>\uc9d1\ud569<\/span>.<\/span><\/div>\n

                  \"\"<\/p>\n

                  \"\"<\/p>\n

                  \"\"<\/p>\n

                  4. ERD(Entity Relationship Diagram)
                  \n<\/span><\/p>\n

                  \"\"<\/li>\n

                • \ud300\uacfc\u00a0<\/span>\uc120\uc218\u00a0<\/span>\uac04\uc5d0\ub294<\/span> “\uc18c\uc18d<\/span>“\uc774\ub77c\ub294\u00a0<\/span>\uad00\uacc4\uac00\u00a0<\/span>\ub9fa\uc5b4\uc838\u00a0<\/span>\uc788\ub2e4<\/span>. \ud14c\uc774\ube14\u00a0<\/span>\uac04\u00a0<\/span>\uc11c\ub85c\uc758\u00a0<\/span>\uc0c1\uad00\u00a0<\/span>\uad00\uacc4\ub97c\u00a0<\/span>\uadf8\ub9bc\uc73c\ub85c\u00a0<\/span>\ub3c4\uc2dd\ud654\ud55c\u00a0<\/span>\uac83\uc744<\/span> E-R \ub2e4\uc774\uc5b4\uadf8\ub7a8\uc774\ub77c\uace0\u00a0<\/span>\ud55c\ub2e4<\/span>.<\/span><\/li>\n
                • ERD\uc758\u00a0<\/span>\uad6c\uc131\u00a0<\/span>\uc694\uc18c\ub294\u00a0<\/span>\uc5d4\ud2f0\ud2f0<\/span>(Entity), \uad00\uacc4<\/span>(Relationship), \uc18d\uc131<\/span>(Attribute) 3\uac00\uc9c0\uc774\uba70\u00a0<\/span>\ud604\uc2e4\u00a0<\/span>\uc138\uacc4\uc758\u00a0<\/span>\ub370\uc774\ud130\ub294\u00a0<\/span>\uc774<\/span> 3\uac00\uc9c0\u00a0<\/span>\uad6c\uc131\u00a0<\/span>\uc694\uc18c\ub85c\u00a0<\/span>\ubaa8\ub450\u00a0<\/span>\ud45c\ud604\uc774\u00a0<\/span>\uac00\ub2a5\ud558\ub2e4<\/span>.<\/span><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"

                  \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ub113\uc740\u00a0\uc758\ubbf8\uc5d0\uc11c\uc758\u00a0\ub370\uc774\ud130\ubca0\uc774\uc2a4\ub294\u00a0\uc77c\uc0c1\uc801\uc778\u00a0\uc815\ubcf4\ub4e4\uc744\ubaa8\uc544\u00a0\ub193\uc740\u00a0\uac83\u00a0\uc790\uccb4\ub97c\uc758\ubbf8\ud55c\ub2e4. \uadf8\ub7ec\ub098\u00a0\uc77c\ubc18\uc801\uc73c\ub85c\u00a0\ub370\uc774\ud130\ubca0\uc774\uc2a4\ub77c\uace0\u00a0\ub9d0\ud560\u00a0\ub584\ub294\u00a0\ud2b9\uc815\u00a0\uae30\uc5c5\uc774\ub098\u00a0\uc870\uc9c1\u00a0\ub610\ub294\u00a0\uac1c\uc778\uc774\u00a0\ud544\uc694\uc5d0\u00a0\uc758\ud574(ex : \ubd80\uac00\uac00\uce58\u00a0\ubc1c\uc0dd) \ub370\uc774\ud130\ub97c\u00a0\uc77c\uc815\ud55c\u00a0\ud615\ud0dc\ub85c\u00a0\uc800\uc7a5\ud574\u00a0\ub193\uc740\u00a0\uac83\uc744\u00a0\uc758\ubbf8 \ub9ce\uc740\u00a0\uc0ac\uc6a9\uc790\ub4e4\uc740\u00a0\ubcf4\ub2e4\u00a0\ud6a8\uc728\uc801\uc778\u00a0\ub370\uc774\ud130\uc758\u00a0\uad00\ub9ac\u00a0\ubfd0\ub9cc\u00a0\uc544\ub2c8\ub77c\u00a0\uc608\uae30\uce58\u00a0\ubabb\ud55c\u00a0\uc0ac\uac74\uc73c\ub85c\u00a0\uc778\ud55c\u00a0\ub370\uc774\ud130\uc758\u00a0\uc190\uc0c1\uc744 \ud53c\ud558\uace0, \ud544\uc694\uc2dc\u00a0\ud544\uc694\ud55c\u00a0\ub370\uc774\ud130\ub97c\u00a0\ubcf5\uad6c\ud558\uae30\u00a0\uc704\ud55c\u00a0\uac15\ub825\ud55c\u00a0\uae30\ub2a5\uc758\u00a0\u00a0\uc18c\ud504\ud2b8\uc6e8\uc5b4\ub97c\u00a0\ud544\uc694\ub85c\u00a0\ud558\uac8c\u00a0\ub418\uc5c8\uace0\u00a0\uc774\ub7ec\ud55c\u00a0\uae30\ubcf8\uc801\uc778\u00a0\uc694\uad6c\uc0ac\ud56d\uc744\u00a0\ub9cc\uc871\uc2dc\ucf1c\uc8fc\ub294\u00a0\uc2dc\uc2a4\ud15c\uc744 DBMS(Database Management System)\ub77c\uace0\u00a0\ud55c\ub2e4. \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758\ubc1c\uc804 1960\ub144\ub300 : \ud50c\ub85c\uc6b0\ucc28\ud2b8 \uc911\uc2ec\uc758 \uac1c\ubc1c \ubc29\ubc95\uc744 \uc0ac\uc6a9\ud558\uc600\uc73c\uba70 \ud30c\uc77c \uad6c\uc870\ub97c \ud1b5\ud574 \ub370\uc774\ud130\ub97c \uc800\uc7a5\ud558\uace0 \uad00\ub9ac\ud558\uc600\ub2e4. 1970\ub144\ub300 : \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uad00\ub9ac \uae30\ubc95\uc774 \ucc98\uc74c \ud0dc\ub3d9\ub418\ub358 \uc2dc\uae30\uc600\uc73c\uba70 \uacc4\uce35\ud615(Hierarchical) \ub370\uc774\ud130\ubca0\uc774\uc2a4, \ub9dd\ud615(Network) \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uac19\uc740 \uc81c\ud488\ub4e4\uc774 \uc0c1\uc6a9\ud654 \ub418\uc5c8\ub2e4. 1980\ub144\ub300 : \ud604\uc7ac \ub300\ubd80\ubd84\uc758 \uae30\uc5c5\uc5d0\uc11c \uc0ac\uc6a9\ub418\uace0 \uc788\ub294 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 \uc0c1\uc6a9\ud654\ub418\uc5c8\uc73c\uba70 Oracle, Sybase, DB2\uc640 […]<\/p>\n","protected":false},"author":1,"featured_media":918,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_bbp_topic_count":0,"_bbp_reply_count":0,"_bbp_total_topic_count":0,"_bbp_total_reply_count":0,"_bbp_voice_count":0,"_bbp_anonymous_reply_count":0,"_bbp_topic_count_hidden":0,"_bbp_reply_count_hidden":0,"_bbp_forum_subforum_count":0,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"spay_email":""},"categories":[219],"tags":[],"jetpack_featured_media_url":"https:\/\/i0.wp.com\/haisins.synology.me\/wordpress\/wp-content\/uploads\/1\/cfile24.uf.235D2F4D568110CD043E31.png?fit=480%2C291","amp_enabled":true,"_links":{"self":[{"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/917"}],"collection":[{"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=917"}],"version-history":[{"count":4,"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/917\/revisions"}],"predecessor-version":[{"id":3975,"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=\/wp\/v2\/posts\/917\/revisions\/3975"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=\/wp\/v2\/media\/918"}],"wp:attachment":[{"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=917"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=917"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/haisins.synology.me\/wordpress\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=917"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}