{"id":476344,"date":"2023-08-09T07:28:31","date_gmt":"2023-08-09T07:28:31","guid":{"rendered":""},"modified":"2023-09-05T11:12:33","modified_gmt":"2023-09-05T11:12:33","slug":"composite-key","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/kr\/wiki\/composite-key\/","title":{"rendered":"\ubcf5\ud569 \ud0a4"},"content":{"rendered":"

\ubcf5\ud569 \ud0a4\ub294 \ud14c\uc774\ube14 \ub0b4\uc758 \ub808\ucf54\ub4dc\ub97c \uace0\uc720\ud558\uac8c \uc2dd\ubcc4\ud558\uae30 \uc704\ud574 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc124\uacc4 \ubc0f \uad00\ub9ac\uc5d0 \uc0ac\uc6a9\ub418\ub294 \uac1c\ub150\uc785\ub2c8\ub2e4. \ub2e8\uc21c \ub610\ub294 \ub2e8\uc77c \uc5f4 \ud0a4\uc640 \ub2ec\ub9ac \ubcf5\ud569 \ud0a4\ub294 \uacb0\ud569 \uc2dc \ub808\ucf54\ub4dc\uc5d0 \ub300\ud55c \uace0\uc720 \uc2dd\ubcc4\uc790\ub97c \uc0dd\uc131\ud558\ub294 \ub450 \uac1c \uc774\uc0c1\uc758 \uc18d\uc131\uc73c\ub85c \uad6c\uc131\ub429\ub2c8\ub2e4. \ub2e8\uc77c \uc18d\uc131\uc774 \ud14c\uc774\ube14\uc758 \uace0\uc720\uc131\uc744 \ubcf4\uc7a5\ud560 \uc218 \uc5c6\uc5b4 \uac01 \ud56d\ubaa9\uc758 \uace0\uc720\uc131\uc744 \ubcf4\uc7a5\ud558\uae30 \uc704\ud574 \uc5ec\ub7ec \uc18d\uc131\uc774 \ud544\uc694\ud55c \uacbd\uc6b0 \ubcf5\ud569 \ud0a4\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \ud544\uc218\uc801\uc785\ub2c8\ub2e4. \uc774 \uae30\uc0ac\uc5d0\uc11c\ub294 \ubcf5\ud569 \ud0a4\uc758 \uc5ed\uc0ac, \uad6c\uc870, \uc720\ud615, \uae30\ub2a5 \ubc0f \ud5a5\ud6c4 \uc804\ub9dd\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \uc54c\uc544\ubd05\ub2c8\ub2e4.<\/p>\n

Composite Key\uc758 \uc720\ub798\uc640 \ucd5c\ucd08 \uc5b8\uae09\uc758 \uc5ed\uc0ac<\/h2>\n

\ubcf5\ud569 \ud0a4\uc758 \uac1c\ub150\uc740 1970\ub144\ub300 \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc2dc\uc2a4\ud15c\uc758 \ucd08\uae30 \uac1c\ubc1c\ub85c \uac70\uc2ac\ub7ec \uc62c\ub77c\uac11\ub2c8\ub2e4. \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubaa8\ub378\uc758 \uc544\ubc84\uc9c0\ub85c \uc5ec\uaca8\uc9c0\ub294 Edgar F. Codd \ubc15\uc0ac\ub294 \ud14c\uc774\ube14 \ub0b4\uc758 \uace0\uc720 \ub808\ucf54\ub4dc\ub97c \uc2dd\ubcc4\ud558\uae30 \uc704\ud55c \uae30\ucd08\ub85c \uae30\ubcf8 \ud0a4 \uac1c\ub150\uc744 \ub3c4\uc785\ud588\uc2b5\ub2c8\ub2e4. \uadf8\ub7ec\ub098 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 \ubcf5\uc7a1\ud574\uc9c0\uba74\uc11c \ub2e8\uc77c \uc18d\uc131\uc744 \uae30\ubcf8 \ud0a4\ub85c \uc0ac\uc6a9\ud558\ub294 \uac83\ub9cc\uc73c\ub85c\ub294 \ubaa8\ub4e0 \uc2dc\ub098\ub9ac\uc624\uc5d0 \ucda9\ubd84\ud558\uc9c0 \uc54a\uc744 \uc218 \uc788\ub2e4\ub294 \uac83\uc774 \ubd84\uba85\ud574\uc84c\uc2b5\ub2c8\ub2e4.<\/p>\n

\ubcf5\ud569 \ud0a4\uc5d0 \ub300\ud55c \uccab \ubc88\uc9f8 \uc5b8\uae09\uc740 1970\ub144 Codd\uc758 "\ub300\uaddc\ubaa8 \uacf5\uc720 \ub370\uc774\ud130 \uc740\ud589\uc744 \uc704\ud55c \ub370\uc774\ud130\uc758 \uad00\uacc4\ud615 \ubaa8\ub378"\uc774\ub77c\ub294 \ub17c\ubb38\uc5d0\uc11c \ucc3e\uc544\ubcfc \uc218 \uc788\uc2b5\ub2c8\ub2e4. Codd\ub294 \uae30\ubcf8 \ud0a4\uc758 \uc911\uc694\uc131\uc5d0 \ub300\ud574 \ub17c\uc758\ud558\uace0 \uacbd\uc6b0\uc5d0 \ub530\ub77c \uc5ec\ub7ec \uc18d\uc131\uc744 \ubcf5\ud569 \ud0a4\ub85c \uc0ac\uc6a9\ud558\ub3c4\ub85d \uc81c\uc548\ud588\uc2b5\ub2c8\ub2e4. \uae30\ub85d\uc758 \uace0\uc720\uc131\uc744 \ubcf4\uc7a5\ud558\uae30 \uc704\ud574 \ud544\uc694\ud558\ub2e4.<\/p>\n

\ubcf5\ud569 \ud0a4\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \uc815\ubcf4: \uc8fc\uc81c \ud655\uc7a5<\/h2>\n

\ubcf5\ud569 \ud0a4\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ud14c\uc774\ube14\uc758 \ub450 \uac1c \uc774\uc0c1\uc758 \uc18d\uc131\uc744 \uacb0\ud569\ud558\uc5ec \uac01 \ub808\ucf54\ub4dc\uc5d0 \ub300\ud55c \uace0\uc720 \uc2dd\ubcc4\uc790\ub97c \uc0dd\uc131\ud568\uc73c\ub85c\uc368 \ud615\uc131\ub429\ub2c8\ub2e4. \uc774\ub294 \ub370\uc774\ud130 \ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud558\uace0 \uc911\ubcf5 \ud56d\ubaa9\uc744 \ubc29\uc9c0\ud558\ub294 \ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4. \ub370\uc774\ud130\ubca0\uc774\uc2a4\ub97c \uc124\uacc4\ud560 \ub54c \ubcf5\ud569 \ud0a4 \uc120\ud0dd\uc740 \ube44\uc988\ub2c8\uc2a4 \ub17c\ub9ac\uc640 \uc800\uc7a5\ub418\ub294 \ub370\uc774\ud130\uc758 \ud2b9\uc131\uc744 \uae30\ubc18\uc73c\ub85c \ud569\ub2c8\ub2e4.<\/p>\n

\ubcf5\ud569 \ud0a4\uc758 \ub0b4\ubd80 \uad6c\uc870 \ubc0f \uc791\ub3d9 \ubc29\uc2dd<\/h3>\n

\ubcf5\ud569 \ud0a4\uc758 \ub0b4\ubd80 \uad6c\uc870\uc5d0\ub294 \ud574\ub2f9 \uad6c\uc131 \uc694\uc18c \uc18d\uc131\uc758 \uc5f0\uacb0\uc774 \ud3ec\ud568\ub429\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uac01 \uc9c1\uc6d0\uc744 \uace0\uc720\ud558\uac8c \uc2dd\ubcc4\ud558\uae30 \uc704\ud574 \uc9c1\uc6d0 ID\uc640 \ubd80\uc11c ID\uac00 \ubaa8\ub450 \ud544\uc694\ud55c \uc9c1\uc6d0 \ud14c\uc774\ube14\uc744 \uc0dd\uac01\ud574 \ubcf4\uc138\uc694. \uc774 \uacbd\uc6b0 \ubcf5\ud569 \ud0a4\ub294 \uc774 \ub450 \uc18d\uc131\uc758 \uc870\ud569\uc785\ub2c8\ub2e4.<\/p>\n

\uc0c8 \ub808\ucf54\ub4dc\uac00 \ud14c\uc774\ube14\uc5d0 \uc0bd\uc785\ub418\uba74 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc2dc\uc2a4\ud15c\uc740 \ud56d\ubaa9\uc744 \uc2b9\uc778\ud558\uae30 \uc804\uc5d0 \ubcf5\ud569 \ud0a4 \uac12\uc774 \uace0\uc720\ud55c\uc9c0 \ud655\uc778\ud569\ub2c8\ub2e4. \ub808\ucf54\ub4dc\ub97c \uc5c5\ub370\uc774\ud2b8\ud558\uac70\ub098 \uc0ad\uc81c\ud560 \ub54c\ub3c4 \ub3d9\uc77c\ud55c \uc720\ud6a8\uc131 \uac80\uc0ac\uac00 \uc801\uc6a9\ub429\ub2c8\ub2e4. \uace0\uc720\uc131\uc744 \uc801\uc6a9\ud568\uc73c\ub85c\uc368 \ubcf5\ud569 \ud0a4\ub294 \ub370\uc774\ud130 \ubd88\uc77c\uce58\uc5d0 \ub300\ud55c \ubcf4\ud638 \uc7a5\uce58 \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n

\ubcf5\ud569\ud0a4\uc758 \uc8fc\uc694 \ud2b9\uc9d5 \ubd84\uc11d<\/h2>\n

\ubcf5\ud569 \ud0a4\uc5d0\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uad00\ub9ac\uc5d0 \uac00\uce58\ub97c \ubd80\uc5ec\ud558\ub294 \uba87 \uac00\uc9c0 \ud544\uc218 \uae30\ub2a5\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

    \n
  1. \n

    \ub3c5\ucc3d\uc131:<\/strong> \ubcf5\ud569 \ud0a4\uc758 \uc18d\uc131 \uc870\ud569\uc740 \ud14c\uc774\ube14 \ub0b4 \ub808\ucf54\ub4dc\uc758 \uace0\uc720\uc131\uc744 \ubcf4\uc7a5\ud558\uc5ec \ub370\uc774\ud130 \uc911\ubcf5\uc744 \ubc29\uc9c0\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n

  2. \n

    \ub370\uc774\ud130 \ubb34\uacb0\uc131:<\/strong> \ubcf5\ud569 \ud0a4\ub294 \uc911\ubcf5\ub418\uac70\ub098 \ucda9\ub3cc\ud558\ub294 \uae30\ub85d\uc758 \uc0bd\uc785\uc744 \ubc29\uc9c0\ud558\ubbc0\ub85c \ub370\uc774\ud130 \ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud558\ub294 \ub370 \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n

  3. \n

    \uad00\uacc4 \ud45c\ud604:<\/strong> \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0\uc11c\ub294 \ubcf5\ud569 \ud0a4\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud14c\uc774\ube14 \uac04 \uad00\uacc4\ub97c \uc815\uc758\ud558\ub294 \uacbd\uc6b0\uac00 \ub9ce\uc544 \ud6a8\uc728\uc801\uc778 \uc870\uc778 \uc791\uc5c5\uc744 \uc0dd\uc131\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n

  4. \n

    \uc778\ub371\uc2f1:<\/strong> \ubcf5\ud569 \ud0a4\ub294 \uc778\ub371\uc2f1 \ud0a4\ub85c \uc0ac\uc6a9\ub418\ubbc0\ub85c \ub370\uc774\ud130\ub97c \ub354 \ube60\ub974\uac8c \uac80\uc0c9\ud558\uace0 \ucffc\ub9ac \uc131\ub2a5\uc744 \ucd5c\uc801\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n

  5. \n

    \ubcf5\uc7a1\ud55c \uad00\uacc4:<\/strong> \ud14c\uc774\ube14\uc774 \ub2e4\ub978 \ud14c\uc774\ube14\uacfc \uc5ec\ub7ec \uad00\uacc4\ub97c \uac16\uace0 \uc788\ub294 \uacbd\uc6b0 \ubcf5\ud569 \ud0a4\ub294 \uc774\ub7ec\ud55c \ubcf5\uc7a1\ud55c \uc5f0\uacb0\uc744 \ub098\ud0c0\ub0b4\ub294 \uac15\ub825\ud55c \ubc29\ubc95\uc744 \uc81c\uacf5\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n

    \ubcf5\ud569 \ud0a4 \uc720\ud615<\/h2>\n

    \ubcf5\ud569 \ud0a4\uc5d0\ub294 \uc6a9\ub3c4\uc5d0 \ub530\ub77c \ubd84\ub958\ub41c \uc138 \uac00\uc9c0 \uc8fc\uc694 \uc720\ud615\uc774 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

      \n
    1. \n

      \ucc9c\uc5f0 \ubcf5\ud569 \ud0a4:<\/strong> \uc790\uc5f0 \ubcf5\ud569 \ud0a4\ub294 \uc2e4\uc81c \uc138\uacc4\uc5d0\uc11c \ub17c\ub9ac\uc801 \uad00\uacc4\ub97c \uac16\ub294 \uc18d\uc131\uc744 \uc0ac\uc6a9\ud558\uc5ec \ud615\uc131\ub429\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4 "User" \ud14c\uc774\ube14\uc740 "FirstName"\uacfc "LastName"\uc73c\ub85c \uad6c\uc131\ub41c \uc790\uc5f0 \ubcf5\ud569 \ud0a4\ub97c \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n

    2. \n

      \ub300\ub9ac \ubcf5\ud569 \ud0a4:<\/strong> \ub300\ub9ac \ubcf5\ud569 \ud0a4\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ubaa9\uc801\uc73c\ub85c\ub9cc \uc0dd\uc131\ub41c \uc778\uacf5 \uc2dd\ubcc4\uc790\uc785\ub2c8\ub2e4. \uc2e4\uc81c \uc758\ubbf8\ub294 \uc5c6\uc73c\uba70 \uc77c\ubc18\uc801\uc73c\ub85c \uc790\ub3d9 \uc99d\uac00\ub41c \uc815\uc218 \ub610\ub294 UUID(Universally Unique Identifier)\uc785\ub2c8\ub2e4.<\/p>\n<\/li>\n

    3. \n

      \uc678\ubd80 \ubcf5\ud569 \ud0a4:<\/strong> \uc678\ub798 \ubcf5\ud569 \ud0a4\ub294 \uc11c\ub85c \ub2e4\ub978 \ub450 \ud14c\uc774\ube14\uc758 \uc18d\uc131\uc744 \uacb0\ud569\ud558\uc5ec \ub450 \ud14c\uc774\ube14 \uac04\uc758 \uad00\uacc4\ub97c \ub098\ud0c0\ub0c4\uc73c\ub85c\uc368 \ud615\uc131\ub429\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n

      \uc544\ub798 \ud45c\uc5d0\ub294 \ubcf5\ud569 \ud0a4\uc758 \uc720\ud615\uacfc \ud2b9\uc131\uc774 \uc694\uc57d\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n\n\n\n\n
      \uc720\ud615<\/th>\n\uc124\uba85<\/th>\n<\/tr>\n<\/thead>\n
      \ucc9c\uc5f0 \ubcf5\ud569 \ud0a4<\/td>\n\uc2e4\uc81c \uc758\ubbf8\ub97c \uc9c0\ub2cc \uc18d\uc131\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4.<\/td>\n<\/tr>\n
      \ub300\ub9ac \ubcf5\ud569 \ud0a4<\/td>\n\uc2e4\uc81c \uc758\ubbf8\uac00 \uc5c6\ub294 \uc778\uacf5 \uc2dd\ubcc4\uc790\uc785\ub2c8\ub2e4.<\/td>\n<\/tr>\n
      \uc678\ubd80 \ubcf5\ud569 \ud0a4<\/td>\n\ub450 \ud14c\uc774\ube14 \uac04\uc758 \uad00\uacc4\ub97c \ub098\ud0c0\ub0c5\ub2c8\ub2e4.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \ubcf5\ud569 \ud0a4 \uc0ac\uc6a9 \ubc29\ubc95: \ubb38\uc81c\uc810 \ubc0f \ud574\uacb0 \ubc29\ubc95<\/h2>\n

      \ubcf5\ud569 \ud0a4\ub97c \uc0ac\uc6a9\ud558\uba74 \ub2e4\uc74c\uacfc \uac19\uc740 \ud2b9\uc815 \uacfc\uc81c\uc640 \uace0\ub824 \uc0ac\ud56d\uc774 \ubc1c\uc0dd\ud569\ub2c8\ub2e4.<\/p>\n

      \uacfc\uc81c:<\/h3>\n
        \n
      1. \n

        \ubcf5\uc7a1\uc131:<\/strong> \ubcf5\ud569 \ud0a4\ub97c \uc0ac\uc6a9\ud558\uc5ec \ud14c\uc774\ube14\uc744 \ub514\uc790\uc778\ud558\uace0 \uad00\ub9ac\ud558\ub294 \uac83\uc740 \ub2e8\uc77c \uc5f4 \ud0a4\ub97c \uc0ac\uc6a9\ud558\ub294 \uac83\ubcf4\ub2e4 \ub354 \ubcf5\uc7a1\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n

      2. \n

        \ub370\uc774\ud130 \ubcc0\uacbd:<\/strong> \ubcf5\ud569 \ud0a4\ub97c \uad6c\uc131\ud558\ub294 \uc18d\uc131\uc744 \uc5c5\ub370\uc774\ud2b8\ud574\uc57c \ud558\ub294 \uacbd\uc6b0 \ubc88\uac70\ub85c\uc6b8 \uc218 \uc788\uc73c\uba70 \ub370\uc774\ud130 \ubb34\uacb0\uc131\uc744 \uc720\uc9c0\ud558\uae30 \uc704\ud574 \ucd94\uac00\uc801\uc778 \uc8fc\uc758\uac00 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n

        \uc194\ub8e8\uc158:<\/h3>\n
          \n
        1. \n

          \uc2e0\uc911\ud55c \ub514\uc790\uc778:<\/strong> \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc2a4\ud0a4\ub9c8\ub97c \uacc4\ud68d\ud558\uace0 \ub370\uc774\ud130\uc758 \uc131\uaca9\uacfc \uad00\uacc4\ub97c \uae30\ubc18\uc73c\ub85c \ubcf5\ud569 \ud0a4\uc5d0 \ub300\ud55c \uc801\uc808\ud55c \uc18d\uc131\uc744 \uc120\ud0dd\ud569\ub2c8\ub2e4.<\/p>\n<\/li>\n

        2. \n

          \uc624\ud1a0\uba54\uc774\uc158:<\/strong> \uc218\ub3d9 \uc624\ub958\ub97c \ucd5c\uc18c\ud654\ud558\ub824\uba74 \ubcf5\ud569 \ud0a4 \uc81c\uc57d \uc870\uac74\uc744 \uc790\ub3d9\uc73c\ub85c \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uad00\ub9ac \uc2dc\uc2a4\ud15c\uc744 \uc0ac\uc6a9\ud558\ub294 \uac83\uc774 \uc88b\uc2b5\ub2c8\ub2e4.<\/p>\n<\/li>\n<\/ol>\n

          \uc8fc\uc694 \ud2b9\uc9d5 \ubc0f \uc720\uc0ac \uc6a9\uc5b4\uc640\uc758 \ube44\uad50<\/h2>\n

          \uc720\uc0ac\ud55c \uac1c\ub150\uacfc \ubcf5\ud569 \ud0a4\ub97c \uad6c\ubcc4\ud558\uae30 \uc704\ud574 \uc774\ub97c \ub2e4\ub978 \ud0a4 \uc720\ud615\uacfc \ube44\uad50\ud574 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n\n\n\n\n\n\n\n
          \ud2b9\uc131<\/th>\n\ubcf5\ud569 \ud0a4<\/th>\n\uae30\ubcf8 \ud0a4<\/th>\n\uc678\ub798 \ud0a4<\/th>\n<\/tr>\n<\/thead>\n
          \ub3c5\ucc3d\uc131<\/td>\n\uace0\uc720\ud55c<\/td>\n\uace0\uc720\ud55c<\/td>\n\ubc18\ub4dc\uc2dc \uace0\uc720\ud560 \ud544\uc694\ub294 \uc5c6\uc74c<\/td>\n<\/tr>\n
          \ud544\uc218 \uc18d\uc131<\/td>\n2\uac1c \uc774\uc0c1<\/td>\n\ud558\ub098 \uc774\uc0c1<\/td>\n\uae30\ubcf8 \ud0a4\uc640 \uc77c\uce58<\/td>\n<\/tr>\n
          \ubaa9\uc801<\/td>\n\uae30\ub85d \uc2dd\ubcc4<\/td>\n\uae30\ub85d \uc2dd\ubcc4<\/td>\n\uad00\uacc4 \uad6c\ucd95<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          \ubbf8\ub798\uc758 \uad00\uc810\uacfc \uae30\uc220<\/h2>\n

          \ub370\uc774\ud130\ubca0\uc774\uc2a4\uac00 \ubc1c\uc804\ud558\uace0 \uc810\uc810 \ub354 \ubcf5\uc7a1\ud55c \ub370\uc774\ud130 \uad6c\uc870\ub97c \ucc98\ub9ac\ud568\uc5d0 \ub530\ub77c \ubcf5\ud569 \ud0a4\ub294 \ub370\uc774\ud130 \ubb34\uacb0\uc131\uc744 \ubcf4\uc7a5\ud558\uace0 \ub808\ucf54\ub4dc \uac04\uc758 \ubcf5\uc7a1\ud55c \uad00\uacc4\ub97c \ub098\ud0c0\ub0b4\ub294 \ub370 \uacc4\uc18d \uc911\uc694\ud55c \uc5ed\ud560\uc744 \ud560 \uac83\uc785\ub2c8\ub2e4. NoSQL \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc640 \uadf8\ub798\ud504 \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc758 \ucc44\ud0dd\uc740 \ub3c5\ud2b9\ud55c \ubc29\uc2dd\uc73c\ub85c \ubcf5\ud569 \ud0a4\ub97c \ud65c\uc6a9\ud560 \uc218 \uc788\ub294 \uc0c8\ub85c\uc6b4 \uae30\ud68c\ub97c \uc81c\uacf5\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

          \ud504\ub85d\uc2dc \uc11c\ubc84\ub97c \uc0ac\uc6a9\ud558\uac70\ub098 \ubcf5\ud569 \ud0a4\uc640 \uc5f0\uacb0\ud558\ub294 \ubc29\ubc95<\/h2>\n

          OneProxy(oneproxy.pro)\uc5d0\uc11c \uc81c\uacf5\ud558\ub294 \uac83\uacfc \uac19\uc740 \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \uc628\ub77c\uc778 \uac1c\uc778 \uc815\ubcf4 \ubcf4\ud638, \ubcf4\uc548 \ubc0f \uc131\ub2a5\uc744 \ud5a5\uc0c1\uc2dc\ud0a4\ub294 \ub370 \ud544\uc218\uc801\uc778 \ub3c4\uad6c\uc785\ub2c8\ub2e4. \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc124\uacc4\uc758 \ubcf5\ud569 \ud0a4 \uac1c\ub150\uacfc \uc9c1\uc811\uc801\uc778 \uad00\ub828\uc740 \uc5c6\uc9c0\ub9cc \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ub370\uc774\ud130 \uad00\ub9ac \uc804\ub7b5\uc5d0 \ud1b5\ud569\ub418\uc5b4 \ucd94\uac00 \ubcf4\ud638 \uacc4\uce35\uc744 \ucd94\uac00\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

          \ud504\ub85d\uc2dc \uc11c\ubc84\ub97c \ud1b5\ud574 \uc694\uccad\uc744 \ub77c\uc6b0\ud305\ud568\uc73c\ub85c\uc368 \uc0ac\uc6a9\uc790\ub294 \uc2e4\uc81c IP \uc8fc\uc18c\ub97c \uc228\uae30\uace0 \uc775\uba85\uc131\uc744 \ub192\uc5ec \uc778\ud130\ub137\uc5d0 \uc561\uc138\uc2a4\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub294 \ubbfc\uac10\ud55c \ub370\uc774\ud130\ub97c \ucc98\ub9ac\ud560 \ub54c\ub098 \ud2b9\uc815 \uc6f9\uc0ac\uc774\ud2b8\ub098 \uc11c\ube44\uc2a4\uc5d0 \ub300\ud55c \uc811\uadfc\uc774 \uc81c\ud55c\ub41c \uc9c0\uc5ed\uc5d0 \uc704\uce58\ud55c \uc0ac\uc6a9\uc790\uc5d0\uac8c \ud2b9\ud788 \uc720\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

          \ud504\ub85d\uc2dc \uc11c\ubc84\ub294 \ubcf5\ud569 \ud0a4\uc640 \ud568\uaed8 \uc0ac\uc6a9\ud558\uc5ec \ub370\uc774\ud130\ubca0\uc774\uc2a4\uc5d0 \ub300\ud55c \ucd94\uac00 \ubcf4\uc548 \ubc0f \uc561\uc138\uc2a4 \uc81c\uc5b4\ub97c \uc81c\uacf5\ud558\uace0 \uc2b9\uc778\ub41c \uc0ac\uc6a9\uc790\uc758 \uc561\uc138\uc2a4\ub97c \uc81c\ud55c\ud558\uba70 \ub370\uc774\ud130 \uce68\ud574 \uc704\ud5d8\uc744 \ucd5c\uc18c\ud654\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n

          \uad00\ub828\ub41c \ub9c1\ud06c\ub4e4<\/h2>\n

          \ubcf5\ud569 \ud0a4 \ubc0f \ub370\uc774\ud130\ubca0\uc774\uc2a4 \ub514\uc790\uc778\uc5d0 \ub300\ud55c \uc790\uc138\ud55c \ub0b4\uc6a9\uc744 \ubcf4\ub824\uba74 \ub2e4\uc74c \ub9ac\uc18c\uc2a4\ub97c \ucc38\uc870\ud558\uc138\uc694.<\/p>\n

            \n
          1. \uad00\uacc4\ud615 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc18c\uac1c<\/a><\/li>\n
          2. \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc124\uacc4: \uc815\uaddc\ud654 \ubc0f \ubcf5\ud569 \ud0a4<\/a><\/li>\n
          3. \uae30\ubcf8, \uc678\ub798 \ubc0f \ubcf5\ud569 \ud0a4 \uc774\ud574<\/a><\/li>\n
          4. \ud504\ub85d\uc2dc \uc11c\ubc84 \ubc0f \uadf8 \uc6a9\ub3c4<\/a><\/li>\n<\/ol>\n

            \uacb0\ub860\uc801\uc73c\ub85c, \ubcf5\ud569 \ud0a4\ub294 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc124\uacc4\uc758 \uae30\ubcf8 \uce21\uba74\uc73c\ub85c, \ub370\uc774\ud130 \ubb34\uacb0\uc131\uacfc \ud14c\uc774\ube14 \ub0b4 \ub808\ucf54\ub4dc\uc758 \uace0\uc720 \uc2dd\ubcc4\uc744 \ubcf4\uc7a5\ud569\ub2c8\ub2e4. \uae30\uc220\uc774 \ubc1c\uc804\ud568\uc5d0 \ub530\ub77c \ubcf5\uc7a1\ud55c \uad00\uacc4\ub97c \ud45c\ud604\ud558\uace0 \ub370\uc774\ud130\ubca0\uc774\uc2a4 \uc6b4\uc601\uc744 \ucd5c\uc801\ud654\ud558\uae30 \uc704\ud55c \uac15\ub825\ud55c \uba54\ucee4\ub2c8\uc998\uc744 \uc81c\uacf5\ud558\ub294 \ubcf5\ud569 \ud0a4\uc758 \uc911\uc694\uc131\uc774 \ub354\uc6b1 \ucee4\uc9c8 \uac83\uc785\ub2c8\ub2e4. \ud504\ub85d\uc2dc \uc11c\ubc84\uc640 \ud568\uaed8 \uc0ac\uc6a9\ud558\uba74 \ub370\uc774\ud130 \ubcf4\uc548 \ubc0f \uac1c\uc778 \uc815\ubcf4 \ubcf4\ud638\uac00 \ub354\uc6b1 \uac15\ud654\ub418\uc5b4 \ubcf5\ud569 \ud0a4\uac00 \ub514\uc9c0\ud138 \uc2dc\ub300\uc758 \uadc0\uc911\ud55c \uc790\uc0b0\uc774 \ub429\ub2c8\ub2e4.<\/p>","protected":false},"featured_media":467929,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476344","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Composite Key: An In-Depth Exploration<\/mark>","faq_items":[{"question":"What is a composite key?","answer":"

            A composite key is a concept used in database design where two or more attributes are combined to create a unique identifier for each record within a table. Unlike a simple key, which uses a single attribute, a composite key offers a robust way to ensure data integrity and prevent duplicate entries.<\/p>"},{"question":"Why are composite keys important in database design?","answer":"

            Composite keys are crucial in database design because they guarantee the uniqueness of records within a table. They play a vital role in maintaining data integrity and help avoid data inconsistencies that may arise with a single-column key. By combining multiple attributes, composite keys provide a more comprehensive identifier for each record.<\/p>"},{"question":"How does a composite key work?","answer":"

            A composite key works by concatenating two or more attributes to create a unique identifier for each record. When inserting or updating data, the database system checks that the combination of attribute values forming the composite key is unique, thus preventing duplicate entries.<\/p>"},{"question":"What are the different types of composite keys?","answer":"

            There are three main types of composite keys:<\/p>

            1. Natural Composite Key:<\/strong> It uses attributes with real-world meaning, such as \"FirstName\" and \"LastName\" to identify records.<\/li>
            2. Surrogate Composite Key:<\/strong> It is an artificial identifier with no real-world meaning, often an auto-incremented integer or a universally unique identifier (UUID).<\/li>
            3. Foreign Composite Key:<\/strong> It represents a relationship between two tables by combining attributes from both tables.<\/li><\/ol>"},{"question":"What are the challenges of using composite keys?","answer":"

              Using composite keys can introduce complexity in database design and management. Updating the attributes forming the composite key requires careful handling to maintain data integrity. Additionally, it may require more attention during querying and indexing compared to single-column keys.<\/p>"},{"question":"How can one overcome the challenges of using composite keys?","answer":"

              To overcome the challenges of using composite keys, it is essential to plan the database schema carefully and choose appropriate attributes based on the data's nature and relationships. Database management systems that can automatically handle composite key constraints can also help minimize manual errors.<\/p>"},{"question":"How can proxy servers be associated with composite keys?","answer":"

              Proxy servers, like those provided by OneProxy (oneproxy.pro), offer added security and privacy for online activities. While not directly related to database design, proxy servers can complement the use of composite keys by providing an extra layer of protection and access control to databases. They can help anonymize user IP addresses and restrict access to authorized users.<\/p>"},{"question":"What are the future perspectives of composite keys?","answer":"

              As databases continue to evolve, composite keys will remain essential in ensuring data integrity and representing complex relationships between records. The adoption of NoSQL databases and graph databases may offer new opportunities for leveraging composite keys in unique ways, further enhancing database management and efficiency.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki\/476344","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/wiki\/476344\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/media\/467929"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/kr\/wp-json\/wp\/v2\/media?parent=476344"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}