{"id":3681,"date":"2023-04-09T21:48:58","date_gmt":"2023-04-09T21:48:58","guid":{"rendered":"https:\/\/bulutistan.com\/blog\/?p=3681"},"modified":"2024-01-20T10:35:25","modified_gmt":"2024-01-20T10:35:25","slug":"iliskisel-veri-tabani-nedir-nasil-calisir-ozellikleri-ornekleri-modelleri","status":"publish","type":"post","link":"https:\/\/bulutistan.com\/blog\/iliskisel-veri-tabani-nedir-nasil-calisir-ozellikleri-ornekleri-modelleri\/","title":{"rendered":"\u0130li\u015fkisel Veri Taban\u0131 Nedir, Nas\u0131l \u00c7al\u0131\u015f\u0131r? \u00d6zellikleri, \u00d6rnekleri, Modelleri"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131, birbiriyle bir \u015fekilde ili\u015fkili olan \u00e7e\u015fitli t\u00fcrdeki bilgileri depolamak i\u00e7in kullan\u0131lan ara\u00e7lard\u0131r. Veri m\u00fchendisleri, i\u015fletmelerin verileri toplamas\u0131na, depolamas\u0131na ve analiz etmesine yard\u0131mc\u0131 olmak i\u00e7in ili\u015fkisel veri tabanlar\u0131 (ve di\u011fer veri y\u00f6netim sistemleri) olu\u015fturur ve tasarlar. Ard\u0131ndan, veri analistleri ve veri bilimcileri bunlar\u0131 b\u00fcy\u00fck miktarda veriyi sindirmek ve anlaml\u0131 i\u00e7g\u00f6r\u00fcler belirlemek i\u00e7in kullan\u0131r.<\/span><\/p>\n<h2 id=\"iliskisel-veri-tabani-nedir\">\u0130li\u015fkisel Veri Taban\u0131 Nedir?<\/h2>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri taban\u0131, verileri depolayan ve verilere eri\u015fim sa\u011flayan bir veri taban\u0131 t\u00fcr\u00fcd\u00fcr. Bu t\u00fcr veri tabanlar\u0131na &#8220;ili\u015fkisel&#8221; denir, \u00e7\u00fcnk\u00fc i\u00e7lerindeki veri \u00f6\u011felerinin birbirleriyle \u00f6nceden belirlenmi\u015f ili\u015fkileri vard\u0131r. \u0130li\u015fkisel veri taban\u0131ndaki veriler tablolarda saklan\u0131r. Tablolar, benzersiz kimlikler veya &#8220;anahtarlar&#8221; ile ba\u011flan\u0131r. Bir kullan\u0131c\u0131n\u0131n belirli bilgilere eri\u015fmesi gerekti\u011finde, o anahtarla ili\u015fkili oldu\u011fu \u00f6nceden belirlenmi\u015f t\u00fcm veri tablolar\u0131na eri\u015fmek i\u00e7in bir anahtar kullanabilir.<\/span><\/p>\n<h3 id=\"iliskisel-veri-tabani-kullanim-durumu-ornegi\">\u0130li\u015fkisel veri taban\u0131 kullan\u0131m durumu \u00f6rne\u011fi<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130nternette k\u0131yafet satan bir \u015firkette \u00e7al\u0131\u015ft\u0131\u011f\u0131n\u0131z\u0131 varsayal\u0131m. \u0130\u015fletmeniz sevkiyat, m\u00fc\u015fteri bilgileri, envanter ve web sitesi trafi\u011fi ile ilgili verileri y\u00f6netmek i\u00e7in ili\u015fkisel bir veri taban\u0131 kullan\u0131r. Sevkiyatla ilgili t\u00fcm tablolara eri\u015fen bu veri taban\u0131n\u0131n anahtar\u0131na sahip oldu\u011funuzu ve ge\u00e7en haftaki sipari\u015fleri sevk etmek i\u00e7in yeterli envanteriniz olup olmad\u0131\u011f\u0131n\u0131 \u00f6\u011frenmeniz gerekti\u011fini varsayal\u0131m.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri taban\u0131, g\u00f6nderi bilgileri ile envanter aras\u0131nda bir ili\u015fki oldu\u011funu tan\u0131d\u0131\u011f\u0131ndan, verileri kar\u015f\u0131la\u015ft\u0131rmak i\u00e7in envanter numaralar\u0131na ve g\u00f6nderi isteklerine eri\u015fmek i\u00e7in anahtar\u0131n\u0131z\u0131 kullanman\u0131z\u0131 sa\u011flar. Bu istek s\u0131ras\u0131nda, web sitesi trafi\u011fi hakk\u0131nda herhangi bir bilgiye eri\u015fmezsiniz, \u00e7\u00fcnk\u00fc anahtar\u0131n\u0131z yaln\u0131zca g\u00f6nderim ile ilgili veri tablolar\u0131na eri\u015fir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bulutistan hizmetlerinin detaylar\u0131na ula\u015fmak i\u00e7in <\/span><a href=\"https:\/\/bulutistan.com\/cloud\/\"><span style=\"font-weight: 400;\">t\u0131klay\u0131n\u0131z<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2 id=\"iliskisel-veri-tabani-kullanicilari\">\u0130li\u015fkisel Veri Taban\u0131 Kullan\u0131c\u0131lar\u0131<\/h2>\n<p><span style=\"font-weight: 400;\">A\u015fa\u011f\u0131daki kullan\u0131c\u0131lar ili\u015fkisel veri taban\u0131 sistemlerinden yararlan\u0131r:<\/span><\/p>\n<p><b>Veri Taban\u0131 Y\u00f6neticileri:<\/b><span style=\"font-weight: 400;\"> Sistemin performans\u0131n\u0131 izleme ve bak\u0131m\u0131n\u0131 yapma g\u00f6revini yerine getirir. Ayr\u0131ca veri taban\u0131 b\u00fct\u00fcnl\u00fc\u011f\u00fc ve g\u00fcvenli\u011fi ile sistemin di\u011fer ilgili sorunlar\u0131ndan da sorumlu olurlar.<\/span><\/p>\n<p><b>Yaz\u0131l\u0131m Geli\u015ftiriciler\/Programc\u0131lar:<\/b><span style=\"font-weight: 400;\"> Veri taban\u0131n\u0131 olu\u015fturur ve tasarlar. Programc\u0131lar, programlama dilleri arac\u0131l\u0131\u011f\u0131yla veri taban\u0131 ile etkile\u015fime girer.<\/span><\/p>\n<p><b>Son Kullan\u0131c\u0131:<\/b><span style=\"font-weight: 400;\"> Komutlar arac\u0131l\u0131\u011f\u0131yla sistemden veri\/bilgi alma g\u00f6revini yerine getirir ve ayr\u0131ca veri ekleme, g\u00fcncelleme ve silme i\u015flemlerini de yapabilir.<\/span><\/p>\n<h2 id=\"dbms-iliskisel-model-kavramlari\">DBMS \u0130li\u015fkisel Model Kavramlar\u0131<\/h2>\n<p><span style=\"font-weight: 400;\">DBMS&#8217;de anla\u015f\u0131lmas\u0131 gereken <\/span><b>ili\u015fkisel veri taban\u0131 kavramlar\u0131 <\/b><span style=\"font-weight: 400;\">a\u015fa\u011f\u0131dakileri i\u00e7erir:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Nitelik:<\/b><span style=\"font-weight: 400;\"> Nitelik, bir varl\u0131\u011f\u0131n \u00f6zelli\u011fi veya kalitesidir. \u0130li\u015fkisel model ba\u011flam\u0131nda, nitelik bir tablodaki bir s\u00fctundur.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Tablolar:<\/b><span style=\"font-weight: 400;\"> Tablo, sat\u0131r ve s\u00fctunlar halinde d\u00fczenlenmi\u015f bir veri koleksiyonudur. Veri taban\u0131 y\u00f6netimi i\u00e7in ili\u015fkisel modelde, varl\u0131klar hakk\u0131nda bilgi depolamak i\u00e7in tablolar kullan\u0131l\u0131r.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Tuple: <\/b><span style=\"font-weight: 400;\">Tuple, tablodaki bir sat\u0131rd\u0131r. Demetler niteliklerden olu\u015fur.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0130li\u015fki \u015eemas\u0131:<\/b><span style=\"font-weight: 400;\"> Bir ili\u015fki \u015femas\u0131, bir tablo i\u00e7in bir pland\u0131r. Bir tabloda yer alan \u00f6znitelikleri ve bu \u00f6znitelikler aras\u0131ndaki ili\u015fkileri tan\u0131mlar.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Derece:<\/b><span style=\"font-weight: 400;\"> Derece, i\u00e7erdi\u011fi niteliklerin say\u0131s\u0131d\u0131r.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Cardinality:<\/b><span style=\"font-weight: 400;\"> Cardinality, bir ili\u015fki \u015femas\u0131ndaki iki \u00f6zellik aras\u0131ndaki ili\u015fkiyi tan\u0131mlar. \u00dc\u00e7 olas\u0131 ili\u015fki vard\u0131r: bire bir, birden \u00e7o\u011fa ve \u00e7oktan \u00e7o\u011fa.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>S\u00fctun: <\/b><span style=\"font-weight: 400;\">S\u00fctun, bir tabloda yer alan bir \u00f6zniteliktir. S\u00fctunlara bazen alanlar da denir.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0130li\u015fki \u00f6rne\u011fi:<\/b><span style=\"font-weight: 400;\"> Bir ili\u015fki \u00f6rne\u011fi, belirli bir ili\u015fki \u015femas\u0131na uyan bir demet k\u00fcmesidir. Ba\u015fka bir deyi\u015fle, bir ili\u015fki \u015femas\u0131 taraf\u0131ndan ortaya konan plana g\u00f6re sat\u0131r ve s\u00fctunlar halinde d\u00fczenlenmi\u015f doldurulmu\u015f verilerdir.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0130li\u015fki anahtar\u0131:<\/b><span style=\"font-weight: 400;\"> Bir ili\u015fki anahtar\u0131, bir tablodaki bir demeti benzersiz \u015fekilde tan\u0131mlayan bir \u00f6znitelik veya \u00f6zniteliklerin birle\u015fimidir.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Alan ad\u0131:<\/b><span style=\"font-weight: 400;\"> Bir \u00f6zniteli\u011fin alan ad\u0131, o \u00f6znitelikte depolanabilecek de\u011ferler k\u00fcmesidir. \u00d6rne\u011fin, bir \u00f6zellik ya\u015flar\u0131 temsil ediyorsa, alan ad\u0131 0&#8217;dan itibaren herhangi bir ya\u015f olacakt\u0131r.<\/span><\/li>\n<\/ul>\n<h2 id=\"iliskisel-veri-tabani-nasil-calisir\">\u0130li\u015fkisel Veri Taban\u0131 Nas\u0131l \u00c7al\u0131\u015f\u0131r?<\/h2>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131, veri analistlerinin ortak \u00f6znitelikler arac\u0131l\u0131\u011f\u0131yla ba\u011flanan birden \u00e7ok tablodan bilgileri verimli bir \u015fekilde sorgulamas\u0131na olanak tan\u0131yan ili\u015fkisel bir veri modeline dayal\u0131d\u0131r.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel bir veri taban\u0131ndan bilgi sorgulamak i\u00e7in ili\u015fkisel bir veri taban\u0131yla birincil ileti\u015fim noktas\u0131 olan SQL&#8217;i kullanmak yayg\u0131n bir uygulamad\u0131r. MySQL, PostgreSQL ve Oracle SQL gibi baz\u0131 sa\u011flay\u0131c\u0131lar kendi SQL uygulamalar\u0131n\u0131 olu\u015fturur. Bu uygulamalar, s\u00f6z dizimlerinde veya SQL&#8217;deki di\u011fer \u00f6zelliklerde farkl\u0131l\u0131k g\u00f6sterebilir. \u00d6rne\u011fin, PostgreSQL, kesme eylemini \u00e7evreleyen i\u015flemde herhangi bir terslik olmas\u0131 durumunda kullan\u0131c\u0131lar\u0131n silinmi\u015f verileri kurtarmas\u0131na olanak tan\u0131yan i\u015flem g\u00fcvenli kesme sunar; MySQL bu \u00f6zelli\u011fe izin vermez.<\/span><\/p>\n<h2 id=\"iliskisel-model-turleri\">\u0130li\u015fkisel Model T\u00fcrleri<\/h2>\n<p><span style=\"font-weight: 400;\">DBMS&#8217;de genellikle \u00fc\u00e7 t\u00fcr ili\u015fkisel model vard\u0131r. Bunlar a\u015fa\u011f\u0131daki \u015fekildedir:<\/span><\/p>\n<h3 id=\"1-birden-coga-model-the-one-to-many-model\">1. Birden \u00c7o\u011fa Model (The One-to-Many Model)<\/h3>\n<p><span style=\"font-weight: 400;\">Bu t\u00fcr bir ili\u015fkide, bir varl\u0131k birden fazla ba\u015fka varl\u0131kla ili\u015fkilidir. \u00d6rne\u011fin, bir m\u00fc\u015fterinin birden \u00e7ok sipari\u015fi olabilir, bir \u00f6\u011fretmenin birden \u00e7ok \u00f6\u011frencisi olabilir ve bir \u00fcr\u00fcn birden \u00e7ok ma\u011fazada sat\u0131labilir. Birden \u00e7o\u011fa modelin temel \u00f6zelli\u011fi, iki varl\u0131k aras\u0131ndaki ili\u015fkinin kar\u015f\u0131l\u0131kl\u0131 olmamas\u0131d\u0131r. Yani bir m\u00fc\u015fterinin birden fazla sipari\u015fi olmas\u0131, bir sipari\u015fin birden \u00e7ok m\u00fc\u015fterisi oldu\u011fu anlam\u0131na gelmez.<\/span><\/p>\n<h3 id=\"2-bire-bir-model-the-one-to-one-model\">2. Bire Bir Model (The One-to-One Model)<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel modellerin bire bir modeli, iki belirli nesne aras\u0131nda do\u011frudan ve benzersiz bir ili\u015fki oldu\u011funu belirtir. Ba\u015fka bir deyi\u015fle, her nesne yaln\u0131zca bir ba\u015fka nesneyle ili\u015fkilendirilebilir ve bunun tersi de ge\u00e7erlidir. Bu t\u00fcr bir ili\u015fki genellikle insanlar ve ehliyet numaralar\u0131 gibi fiziksel \u015feyler aras\u0131ndaki ili\u015fkileri temsil etmek i\u00e7in kullan\u0131l\u0131r. Bire bir model nispeten basit olsa da, karma\u015f\u0131k ger\u00e7ek d\u00fcnya ili\u015fkilerini temsil etmek i\u00e7in yararl\u0131 olabilir.<\/span><\/p>\n<h3 id=\"3-coktan-coga-model-the-many-to-many-model\">3. \u00c7oktan \u00c7o\u011fa Model (The Many-to-Many Model)<\/h3>\n<p><span style=\"font-weight: 400;\">\u00c7oktan \u00e7o\u011fa modelde, birincil tablodaki her kay\u0131t, yabanc\u0131 tablodaki birden \u00e7ok kayda ba\u011flanabilir ve bunun tersi de ge\u00e7erlidir. Bu t\u00fcr bir ili\u015fki daha az yayg\u0131nd\u0131r. \u00d6rne\u011fin, \u00f6\u011frenciler ve kurslar aras\u0131nda \u00e7oktan \u00e7o\u011fa bir ili\u015fki kurulur. Bir \u00f6\u011frenci birden fazla ders alabilir ve bir derse birden fazla \u00f6\u011frenci kaydolabilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00c7oktan \u00e7o\u011fa bir ili\u015fki olu\u015fturmak i\u00e7in di\u011fer tablolar\u0131n birincil anahtarlar\u0131n\u0131 i\u00e7eren, ba\u011flant\u0131 tablosu ad\u0131 verilen \u00fc\u00e7\u00fcnc\u00fc bir tablo olu\u015fturmam\u0131z gerekir. Ba\u011flant\u0131 tablosu, di\u011fer iki tablodaki sat\u0131rlar aras\u0131ndaki ili\u015fkileri kurar.<\/span><\/p>\n<h2 id=\"iliskisel-veri-tabani-neden-onemlidir\">\u0130li\u015fkisel Veri Taban\u0131 Neden \u00d6nemlidir?<\/h2>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel bir veri taban\u0131n\u0131n ana avantaj\u0131, faydal\u0131 bilgiler elde etmek i\u00e7in farkl\u0131 tablolardan verileri birbirine ba\u011flama yetene\u011fidir. Bu yakla\u015f\u0131m, her b\u00fcy\u00fckl\u00fckteki ve sekt\u00f6rdeki i\u015fletmenin \u00e7e\u015fitli departmanlardan farkl\u0131 veri k\u00fcmeleri aras\u0131ndaki ili\u015fkileri de\u015fifre etmesine yard\u0131mc\u0131 olur. \u0130li\u015fkisel bir veri taban\u0131nda verilerin nas\u0131l yap\u0131land\u0131r\u0131ld\u0131\u011f\u0131, eri\u015fim izinlerini y\u00f6netmek i\u00e7in de yararl\u0131 olabilir. Veri noktalar\u0131 aras\u0131ndaki ili\u015fkiler \u00f6nceden belirlendi\u011finden ve referans i\u00e7in benzersiz bir kimlik gerektirdi\u011finden, kullan\u0131c\u0131lar yaln\u0131zca ilgili ve \u00f6nceden taranm\u0131\u015f bilgileri elde eder.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131n\u0131n birka\u00e7 avantaj\u0131 vard\u0131r. Bunlar a\u015fa\u011f\u0131daki \u015fekildedir:<\/span><\/p>\n<h3 id=\"1-basit-ve-merkezi-veri-tabani\">1. Basit ve merkezi veri taban\u0131<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131 basittir. Tablolar aras\u0131nda ge\u00e7i\u015f yapmak, \u00e7e\u015fitli ama\u00e7lar i\u00e7in kullan\u0131labilecek \u00fcst\u00fcn bir bilgi sa\u011flar. Ayr\u0131ca, ERP sistemleri ili\u015fkisel veri tabanlar\u0131 \u00fczerine kuruludur, bu nedenle kullan\u0131c\u0131lar\u0131n m\u00fc\u015fterileri, envanteri ve \u00e7ok daha fazlas\u0131n\u0131 y\u00f6netmesine yard\u0131mc\u0131 olur.<\/span><\/p>\n<h3 id=\"2-kolay-kullanim\">2. Kolay kullan\u0131m<\/h3>\n<p><span style=\"font-weight: 400;\">Bir\u00e7ok \u015firket, b\u00fcy\u00fck miktarda veriyi d\u00fczenlemek ve y\u00f6netmek i\u00e7in ili\u015fkisel veri tabanlar\u0131n\u0131 ve ERP&#8217;yi kullan\u0131r. S\u00fcrekli kullan\u0131mlar\u0131, buluta ge\u00e7i\u015f gibi bu sistemlerde iyile\u015ftirmeler yap\u0131lmas\u0131na yard\u0131mc\u0131 olur. SQL kullanarak, kullan\u0131c\u0131lar ihtiya\u00e7 duyduklar\u0131 bilgileri almak, filtrelemek ve d\u00fc\u015f\u00fcnmek i\u00e7in veri k\u00fcmelerinde kolayca gezinebilir.<\/span><\/p>\n<h3 id=\"3-zamandan-ve-paradan-tasarruf\">3. Zamandan ve paradan tasarruf<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131n\u0131 kullanarak \u015firketler d\u00fczenli ve verimli kalabilir. Benzersiz kimlikler, ister bir m\u00fc\u015fterinin sipari\u015fini ister m\u00fcze ziyaret\u00e7ilerini takip ediyor olsun, yinelenen bilgileri ortadan kald\u0131rmaya yard\u0131mc\u0131 olur. M\u00fc\u015fteri verilerinin g\u00fcnl\u00fcklerini girmek i\u00e7in zaman ay\u0131rmak yerine, ili\u015fkisel bir veri taban\u0131 fazlal\u0131\u011f\u0131 azalt\u0131r ve b\u00f6ylece \u00e7al\u0131\u015fanlar\u0131n zaman\u0131ndan tasarruf sa\u011flar. \u015eirketler, bu eme\u011fi ba\u015fka bir yere tahsis ederek paradan tasarruf edebilir.<\/span><\/p>\n<h3 id=\"4-guvenlik\">4. G\u00fcvenlik<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri taban\u0131 y\u00f6netim sistemi, sadece yetkili kullan\u0131c\u0131lar\u0131n verilere do\u011frudan eri\u015fmesine izin verdi\u011fi i\u00e7in veriler g\u00fcvendedir. Yetkisiz hi\u00e7bir kullan\u0131c\u0131 bilgilere eri\u015femez.<\/span><\/p>\n<h3 id=\"5-isbirligi\">5. \u0130\u015fbirli\u011fi<\/h3>\n<p><span style=\"font-weight: 400;\">Birden \u00e7ok kullan\u0131c\u0131, ayn\u0131 anda ve veriler g\u00fcncelleniyor olsa bile bilgileri almak i\u00e7in veri taban\u0131na eri\u015febilir.<\/span><\/p>\n<h3 id=\"6-normallestirme\">6. Normalle\u015ftirme<\/h3>\n<p><span style=\"font-weight: 400;\">Veriler giderek daha karma\u015f\u0131k hale geldik\u00e7e, verileri depolaman\u0131n verimli yollar\u0131na olan ihtiya\u00e7 da artar. Normalle\u015ftirme, depolama boyutunu azaltmak i\u00e7in bilgileri y\u00f6netilebilir par\u00e7alara ay\u0131ran bir y\u00f6ntemdir. Verilerinizi normalle\u015ftirmenin ba\u015fka bir d\u00fczeyine ge\u00e7meden \u00f6nce veriler haz\u0131rl\u0131k gerektiren herhangi bir d\u00fczeyde farkl\u0131 d\u00fczeylere ayr\u0131labilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Veri taban\u0131 normalle\u015ftirme ayr\u0131ca ili\u015fkisel bir veri taban\u0131n\u0131n yap\u0131s\u0131nda \u00e7e\u015fitlilik veya sapma olmamas\u0131n\u0131 ve do\u011fru bir \u015fekilde manip\u00fcle edilebilmesini sa\u011flar. Bu, i\u015f kararlar\u0131n\u0131z i\u00e7in bu veri taban\u0131ndaki verileri kullan\u0131rken b\u00fct\u00fcnl\u00fc\u011f\u00fcn korunmas\u0131na olanak tan\u0131r.<\/span><\/p>\n<h3 id=\"7-veri-butunlugu\">7. Veri b\u00fct\u00fcnl\u00fc\u011f\u00fc<\/h3>\n<p><span style=\"font-weight: 400;\">RDBMS veri tabanlar\u0131, t\u00fcm tablolarda tutarl\u0131l\u0131k sa\u011flad\u0131klar\u0131 i\u00e7in veri b\u00fct\u00fcnl\u00fc\u011f\u00fc i\u00e7in de yayg\u0131n olarak kullan\u0131l\u0131r. Veri b\u00fct\u00fcnl\u00fc\u011f\u00fc, do\u011fruluk ve kullan\u0131m kolayl\u0131\u011f\u0131 gibi \u00f6zellikleri sa\u011flar.<\/span><\/p>\n<h2 id=\"iliskisel-veri-tabaninin-dezavantajlari\">\u0130li\u015fkisel Veri Taban\u0131n\u0131n Dezavantajlar\u0131<\/h2>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131n\u0131n ne kadar iyi \u00f6l\u00e7eklenebilece\u011fi konusunda s\u0131n\u0131rlar vard\u0131r. Tam boyut a\u00e7\u0131s\u0131ndan, baz\u0131 veri tabanlar\u0131n\u0131n s\u00fctun uzunluklar\u0131 \u00fczerinde sabit s\u0131n\u0131rlar\u0131 vard\u0131r. Veri taban\u0131n\u0131z tek bir adanm\u0131\u015f sunucu \u00fczerine kuruluysa, \u00f6l\u00e7eklendirme daha fazla sunucu alan\u0131 sat\u0131n almay\u0131 gerektirir ve bu da uzun vadede pahal\u0131ya m\u00e2l olur.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Ayr\u0131ca, bir veri taban\u0131na s\u00fcrekli olarak yeni \u00f6\u011feler eklemek onu o kadar karma\u015f\u0131k hale getirebilir ki, yeni veri par\u00e7alar\u0131 aras\u0131nda ili\u015fki kurmay\u0131 zorla\u015ft\u0131r\u0131r. Karma\u015f\u0131k veri ili\u015fkileri de sorgulamay\u0131 yava\u015flat\u0131r ve performans\u0131 olumsuz etkiler.<\/span><\/p>\n<h2 id=\"iliskisel-veri-tabani-sinirlamalari\">\u0130li\u015fkisel Veri Taban\u0131 S\u0131n\u0131rlamalar\u0131<\/h2>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131n\u0131 kullanman\u0131n daha fazla yarar\u0131 olmas\u0131na ra\u011fmen baz\u0131 s\u0131n\u0131rlamalar\u0131 da vard\u0131r.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri taban\u0131n\u0131 kullanman\u0131n s\u0131n\u0131rlamalar\u0131 a\u015fa\u011f\u0131daki \u015fekildedir:<\/span><\/p>\n<h3 id=\"1-bakim-problemi\">1. Bak\u0131m Problemi<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri taban\u0131n\u0131n bak\u0131m\u0131, verilerin artmas\u0131 nedeniyle zaman i\u00e7inde zorla\u015f\u0131r. Geli\u015ftiriciler ve programc\u0131lar veri taban\u0131n\u0131 korumak i\u00e7in \u00e7ok zaman harcamak zorundad\u0131r.<\/span><\/p>\n<h3 id=\"2-maliyet\">2. Maliyet<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri taban\u0131 sisteminin kurulmas\u0131 ve s\u00fcrd\u00fcr\u00fclmesi maliyetlidir. Yaz\u0131l\u0131m\u0131n ilk maliyeti tek ba\u015f\u0131na k\u00fc\u00e7\u00fck i\u015fletmeler i\u00e7in olduk\u00e7a pahal\u0131 olabilir, ancak bu \u00f6zel program t\u00fcr\u00fcnde uzmanl\u0131\u011fa sahip olmas\u0131 gereken profesyonel bir teknisyeni i\u015fe almay\u0131 hesaba katt\u0131\u011f\u0131n\u0131zda daha da k\u00f6t\u00fcle\u015fir.<\/span><\/p>\n<h3 id=\"3-fiziksel-depolama\">3. Fiziksel Depolama<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel bir veri taban\u0131, ger\u00e7ekle\u015ftirilen her i\u015flem ayr\u0131 depolamaya ba\u011fl\u0131 oldu\u011fu i\u00e7in \u00e7ok fazla fiziksel bellek gerektiren sat\u0131r ve s\u00fctunlardan olu\u015fur. Fiziksel bellek gereksinimleri, verilerin artmas\u0131yla birlikte artabilir.<\/span><\/p>\n<h3 id=\"4-olceklenebilirlik-eksikligi\">4. \u00d6l\u00e7eklenebilirlik Eksikli\u011fi<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri taban\u0131n\u0131 birden fazla sunucu \u00fczerinden kullan\u0131rken yap\u0131s\u0131 de\u011fi\u015fir ve \u00f6zellikle veri miktar\u0131n\u0131n fazla oldu\u011fu durumlarda kullan\u0131m\u0131 zorla\u015f\u0131r. Bu nedenle, veriler farkl\u0131 fiziksel depolama sunucular\u0131nda \u00f6l\u00e7eklenemez. Sonu\u00e7 olarak, performans\u0131 (yani veri kullan\u0131labilirli\u011fi ve y\u00fckleme s\u00fcresi vb.) etkilenir.<\/span><\/p>\n<h3 id=\"5-yapidaki-karmasiklik\">5. Yap\u0131daki Karma\u015f\u0131kl\u0131k<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131, verileri yaln\u0131zca tablo bi\u00e7iminde depolayabilir, bu da nesneler aras\u0131ndaki karma\u015f\u0131k ili\u015fkileri temsil etmeyi zorla\u015ft\u0131r\u0131r. Bu bir sorundur \u00e7\u00fcnk\u00fc bir\u00e7ok uygulama, uygulama mant\u0131\u011f\u0131n\u0131n gerektirdi\u011fi t\u00fcm gerekli verileri depolamak i\u00e7in birden fazla tablo gerektirir.<\/span><\/p>\n<h3 id=\"6-zamanla-performansta-dusus\">6. Zamanla Performansta D\u00fc\u015f\u00fc\u015f<\/h3>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri taban\u0131, yaln\u0131zca birden \u00e7ok tabloya ba\u011fl\u0131 olmas\u0131 nedeniyle yava\u015flayabilir. Sistemde \u00e7ok say\u0131da tablo ve veri oldu\u011funda, karma\u015f\u0131kl\u0131\u011f\u0131n artmas\u0131na neden olur. Belirli bir zamanda sunucuda ka\u00e7 ki\u015finin oturum a\u00e7t\u0131\u011f\u0131na ba\u011fl\u0131 olarak, sorgular \u00fczerinde yava\u015f yan\u0131t s\u00fcrelerine veya hatta tamamen ba\u015far\u0131s\u0131zl\u0131\u011fa neden olabilir.<\/span><\/p>\n<h2 id=\"iliskisel-veri-tabani-ornekleri\">\u0130li\u015fkisel Veri Taban\u0131 \u00d6rnekleri<\/h2>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel veri tabanlar\u0131n\u0131n en pop\u00fcler \u00f6rneklerinden baz\u0131lar\u0131n\u0131 a\u015fa\u011f\u0131daki listede bulabilirsiniz:<\/span><\/p>\n<h3 id=\"1-mysql\">1. MySQL<\/h3>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-3683 aligncenter\" src=\"https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mysql.jpeg\" alt=\"\" width=\"1000\" height=\"500\" srcset=\"https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mysql.jpeg 1000w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mysql-300x150.jpeg 300w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mysql-768x384.jpeg 768w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mysql-380x190.jpeg 380w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mysql-550x275.jpeg 550w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mysql-800x400.jpeg 800w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">MySQL, Sun Microsystems (\u015fimdi Oracle Corporation) taraf\u0131ndan sat\u0131n al\u0131nana kadar ili\u015fkisel veri tabanlar\u0131 i\u00e7in a\u00e7\u0131k kaynakl\u0131 bir y\u00f6netim sistemi olarak geli\u015ftirildi. \u015eu an farkl\u0131 tescilli lisanslar\u0131n eklenmesiyle hala a\u00e7\u0131k kaynak lisans\u0131 alt\u0131nda mevcuttur.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MySQL, ACID uyumlulu\u011fu, payla\u015f\u0131ms\u0131z k\u00fcmeleme ile yerle\u015fik \u00e7o\u011faltma deste\u011fi sunar ve birden \u00e7ok depolama motorunu destekler. Ancak, baz\u0131 depolama motorlar\u0131n\u0131n kullan\u0131lmas\u0131 SQL&#8217;in d\u00fczg\u00fcn \u00e7al\u0131\u015fmamas\u0131na neden olabilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MySQL, y\u00fcksek kullan\u0131labilirlik ve performans\u0131 korurken h\u0131zl\u0131 veri giri\u015fi ve \u00f6l\u00e7eklenebilirlikte m\u00fckemmeldir. Bu, onu web ve uygulama geli\u015ftirme i\u00e7in son derece yararl\u0131 k\u0131lar.<\/span><\/p>\n<h3 id=\"2-postgresql\">2. PostgreSQL<\/h3>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-3684 aligncenter\" src=\"https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/postgresql.jpeg\" alt=\"\" width=\"1000\" height=\"500\" srcset=\"https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/postgresql.jpeg 1000w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/postgresql-300x150.jpeg 300w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/postgresql-768x384.jpeg 768w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/postgresql-380x190.jpeg 380w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/postgresql-550x275.jpeg 550w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/postgresql-800x400.jpeg 800w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">PostgreSQL, a\u00e7\u0131k kaynak lisans\u0131 alt\u0131nda kullan\u0131labilen \u00fccretsiz bir ili\u015fkisel veri taban\u0131 y\u00f6neticisidir. MVCC&#8217;nin (\u00e7oklu s\u00fcr\u00fcm e\u015fzamanl\u0131l\u0131k kontrol\u00fc) kayda de\u011fer bir \u015fekilde eklenmesiyle MySQL ile baz\u0131 \u00f6zellikleri payla\u015f\u0131r ve bu da onu ACID uyumlu hale getirir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PostgreSQL, b\u00fcy\u00fck veri tabanlar\u0131n\u0131 i\u015flerken bile y\u00fcksek d\u00fczeyde performans ve esnekli\u011fi korur. Y\u00fcksek okuma\/yazma h\u0131zlar\u0131na ve kapsaml\u0131 veri analizine ihtiya\u00e7 duyan kullan\u0131c\u0131lar i\u00e7in do\u011fru se\u00e7imdir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">PostgreSQL&#8217;in baz\u0131 \u00f6nemli kullan\u0131c\u0131lar\u0131 aras\u0131nda Reddit, Skype ve Instagram bulunur.<\/span><\/p>\n<h3 id=\"3-mariadb\">3. MariaDB<\/h3>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"size-full wp-image-3685 aligncenter\" src=\"https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mariadb.jpeg\" alt=\"\" width=\"1000\" height=\"500\" srcset=\"https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mariadb.jpeg 1000w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mariadb-300x150.jpeg 300w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mariadb-768x384.jpeg 768w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mariadb-380x190.jpeg 380w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mariadb-550x275.jpeg 550w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/mariadb-800x400.jpeg 800w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">MariaDB, MySQL&#8217;in Oracle taraf\u0131ndan sat\u0131n al\u0131nmas\u0131n\u0131n ard\u0131ndan topluluk odakl\u0131 bir ili\u015fkisel veri taban\u0131 olarak ba\u015flad\u0131. H\u00e2l\u00e2 a\u00e7\u0131k kaynakl\u0131 ve GNU General Public License alt\u0131nda mevcuttur.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">MariaDB, daha da fazla depolama motoru i\u00e7in destek ekleyerek ve depolama motoru s\u0131n\u0131rlamalar\u0131n\u0131 d\u00fczelterek MySQL taban\u0131n\u0131 geli\u015ftirir. Bu, MySQL&#8217;den bile daha h\u0131zl\u0131 performans g\u00f6stermesini ve hem SQL hem de NoSQL&#8217;i tek bir veri taban\u0131nda \u00e7al\u0131\u015ft\u0131rmas\u0131n\u0131 sa\u011flar.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00d6nemli MariaDB kullan\u0131c\u0131lar\u0131 aras\u0131nda Google, Mozilla ve Wikimedia Foundation bulunmaktad\u0131r.<\/span><\/p>\n<h3 id=\"4-sqlite\">4. SQLite<\/h3>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-3686\" src=\"https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/sqlite.jpeg\" alt=\"\" width=\"1000\" height=\"500\" srcset=\"https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/sqlite.jpeg 1000w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/sqlite-300x150.jpeg 300w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/sqlite-768x384.jpeg 768w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/sqlite-380x190.jpeg 380w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/sqlite-550x275.jpeg 550w, https:\/\/bulutistan.com\/blog\/wp-content\/uploads\/2023\/04\/sqlite-800x400.jpeg 800w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/p>\n<p><span style=\"font-weight: 400;\">Bu listedeki di\u011ferlerinin aksine, SQLite bir istemci-sunucu veri taban\u0131 y\u00f6neticisi de\u011fil, son uygulamaya g\u00f6m\u00fcl\u00fcd\u00fcr. Bu, hafif olmas\u0131n\u0131 ve \u00e7ok \u00e7e\u015fitli sistem ve platformlarla \u00e7al\u0131\u015fabilmesini sa\u011flar.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">SQLite yaln\u0131zca k\u0131smen tetikleyiciler sa\u011flad\u0131\u011f\u0131ndan, s\u0131n\u0131rl\u0131 bir ALTER TABLE i\u015flevine sahip oldu\u011fundan ve g\u00f6r\u00fcn\u00fcmlere yazamad\u0131\u011f\u0131ndan, baz\u0131 s\u0131n\u0131rlamalara da neden olur. Ayr\u0131ca, veri taban\u0131n\u0131n maksimum boyutunu 32.000 s\u00fctun ve 140 TB ile s\u0131n\u0131rlar.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bu nedenle SQLite, di\u011fer uygulamalar i\u00e7in bir veri taban\u0131 bile\u015feni olarak en iyi \u015fekilde kullan\u0131l\u0131r. Dikkate de\u011fer kullan\u0131mlar, Google Chrome, Mozilla Firefox, Opera ve Safari gibi pop\u00fcler taray\u0131c\u0131lar\u0131 i\u00e7erir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Bulutistan hizmetlerinin detaylar\u0131na ula\u015fmak i\u00e7in <\/span><a href=\"https:\/\/bulutistan.com\/cloud\/\"><span style=\"font-weight: 400;\">t\u0131klay\u0131n\u0131z<\/span><\/a><span style=\"font-weight: 400;\">.<\/span><\/p>\n<h2 id=\"iliskisel-veri-tabanlarina-alternatifler-nelerdir\">\u0130li\u015fkisel Veri Tabanlar\u0131na Alternatifler Nelerdir?<\/h2>\n<p><span style=\"font-weight: 400;\">Kullan\u0131m durumuna ba\u011fl\u0131 olarak belirli avantajlar sunan verilerimizi depolamak i\u00e7in daha fazla alternatif vard\u0131r. Yap\u0131land\u0131r\u0131lmam\u0131\u015f veriler i\u00e7in ili\u015fkisel olmayan (veya NoSQL) bir veri taban\u0131, b\u00fcy\u00fck hacimli verileri y\u00fcksek h\u0131zlarda i\u015fleyebilir. \u0130li\u015fkisel veri tabanlar\u0131na ba\u015fka bir alternatif, bir veri g\u00f6l\u00fcn\u00fc i\u00e7erir. Verilerin amac\u0131n\u0131 hen\u00fcz tan\u0131mlamam\u0131\u015f olsak bile herhangi bir \u00f6l\u00e7ekte veri depolamak i\u00e7in bir veri g\u00f6l\u00fc kullanabiliriz. Bir veri g\u00f6l\u00fcnde veriler yap\u0131land\u0131r\u0131lm\u0131\u015f, yap\u0131land\u0131r\u0131lmam\u0131\u015f ve hatta ham dosyalarda olabilir.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0130li\u015fkisel verilere ihtiyac\u0131n\u0131z varsa ve veri analiti\u011fi ger\u00e7ekle\u015ftirmeniz gerekiyorsa, bir veri ambar\u0131 en iyi se\u00e7enek olabilir. Veri ambarlar\u0131 genellikle bulut tabanl\u0131d\u0131r. Bir veri ambar\u0131 ili\u015fkisel bir model kullansa da, veri analiti\u011finde kullan\u0131m i\u00e7indir ve bu nedenle ili\u015fkisel veri tabanlar\u0131ndan belirli farkl\u0131l\u0131klar\u0131 vard\u0131r. \u00d6rne\u011fin, bir veri ambar\u0131nda, g\u00fcncel veriler yerine ge\u00e7mi\u015f verileri yakalamak daha yayg\u0131nd\u0131r. Dahas\u0131, veri g\u00fcncellemeleri, bir i\u015flem ger\u00e7ekle\u015fti\u011finde olu\u015fturulmak yerine programlan\u0131r. Son olarak, veri ambarlar\u0131, analitik ama\u00e7lar i\u00e7in birden fazla veri kayna\u011f\u0131ndan veri toplanmas\u0131 ve d\u00f6n\u00fc\u015ft\u00fcr\u00fclmesiyle olu\u015fturulur.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"\u0130li\u015fkisel veri tabanlar\u0131, birbiriyle bir \u015fekilde ili\u015fkili olan \u00e7e\u015fitli t\u00fcrdeki bilgileri depolamak i\u00e7in kullan\u0131lan ara\u00e7lard\u0131r. Veri m\u00fchendisleri, i\u015fletmelerin&hellip;\n","protected":false},"author":1,"featured_media":3682,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"csco_singular_sidebar":"","csco_page_header_type":"","csco_appearance_grid":"","csco_page_load_nextpost":"","csco_post_video_location":[],"csco_post_video_location_hash":"","csco_post_video_url":"","csco_post_video_bg_start_time":0,"csco_post_video_bg_end_time":0},"categories":[15],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u0130li\u015fkisel Veri Taban\u0131 Nedir, Nas\u0131l \u00c7al\u0131\u015f\u0131r? \u00d6zellikleri, \u00d6rnekleri, Modelleri - Bulutistan Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/bulutistan.com\/blog\/iliskisel-veri-tabani-nedir-nasil-calisir-ozellikleri-ornekleri-modelleri\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u0130li\u015fkisel Veri Taban\u0131 Nedir, Nas\u0131l \u00c7al\u0131\u015f\u0131r? \u00d6zellikleri, \u00d6rnekleri, Modelleri - Bulutistan Blog\" \/>\n<meta property=\"og:description\" content=\"\u0130li\u015fkisel veri tabanlar\u0131, birbiriyle bir \u015fekilde ili\u015fkili olan \u00e7e\u015fitli t\u00fcrdeki bilgileri depolamak i\u00e7in kullan\u0131lan ara\u00e7lard\u0131r. 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