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database


Yintoni iDatabase

Un sedata yingqokelela ye dati iququzelelwe ngendlela ecwangcisiweyo yokuququzelela ukufikelela, ulawulo kunye nohlalutyo. Yicinge njengendawo yokugcina iinkcukacha, apho yonke into igcinwa ngokucocekileyo nangokufumaneka lula.

Khawufane ucinge ukuba unencwadi yefowuni eneenombolo zefowuni zabahlobo bakho. Irubrikhi yinto elula sedata: iqulathe dati (amagama kunye neenombolo zomnxeba) zicwangciswe ngendlela ecwangcisiweyo (ngolandelelwano lwealfabhethi, umzekelo).

I sedata zisetyenziswa kwiimeko ezahlukeneyo, ukusuka kwishishini ukuya kweyenzululwazi, ukugcina nokulawula ulwazi lwendalo eyahlukileyo:

  • Idatha yobuqu ye abathengi: igama, ifani, idilesi, umnxeba, i-imeyile.
  • Iintengiselwano zemali: umhla, isixa, uhlobo lwentengiselwano, umxhamli.
  • Iimveliso kuluhlu: ikhowudi yemveliso, inkcazo, ixabiso, ubuninzi obukhoyo.
  • Amanqaku ebhlog: isihloko, umbhali, umhla wokupapashwa, isicatshulwa.
  • Izithuba malunga Imidiya yokuncokola: umbhalo, imifanekiso, iividiyo, umhla wokupapashwa, umbhali.

Kukho iintlobo ezahlukeneyo ze sedata, nganye ineempawu ezithile kunye noncedo:

  • database ubudlelwane: bakhumbula i dati kwiitafile ezinobudlelwane obuchaziweyo phakathi kwabo. Ziyezona ntlobo zixhaphake kakhulu kwaye zibonelela ngokuguquguquka okuphezulu kunye nokulinganisa. Imizekelo: MySQL, PostgreSQL, Oracle.
  • I-NoSQL: yenzelwe ukusingatha dati engakhiwanga kakuhle okanye engaqinanga. Zifaneleke ngokukodwa kwiwebhu kunye nezicelo zeselula. Imizekelo: MongoDB, Cassandra, Redis.
  • database kwinkumbulo: bakhumbula i dati kwinkumbulo eguquguqukayo yokufikelela ngokukhawuleza kombane. Zisetyenziselwa izicelo ezifuna ixesha elifutshane lokuphendula. Imizekelo: Redis, Memcached.

I sedata zinokufakelwa kwaye zilawulwe kwiseva yazo okanye zingasetyenziswa njengenkonzo kwi ilifu. Iinkonzo ze sedata in ilifu zinika iingenelo ezininzi, ezifana scalability, bhetyebhetye kunye nokhuseleko.

Kutheni usebenzise a sedata?

I sedata zinika iingenelo ezininzi:

  • Umbutho: i dati zigcinwa ngendlela ecwangcisiweyo necwangcisiweyo, iququzelela uphando kunye nokufikelela kulwazi.
  • Ukusebenza kakuhle: i sedata ikuvumela ukuba ulawule umthamo omkhulu we dati ngendlela esebenzayo.
  • Uhlalutyo: i dati inokuhlalutywa ukufumana ulwazi oluluncedo kwishishini.
  • ukhuseleko: i sedata zinika iimpawu ezininzi ukukhusela yakho dati ukusuka ukufikelela okungagunyaziswanga.

Isiphelo:

I sedata zisisixhobo esisisiseko sogcino, ukulawula nokuhlalutya dati. Ukukhetha uhlobo sedata kunye neyona nkonzo ifanelekileyo yokubamba ixhomekeke kwizinto ezininzi, ezifana nohlobo lwe dati ukugcina, umthamo we dati, umsebenzi ofunekayo kunye neendleko.

Imbali yogcino-lwazi
Imbali yogcino-lwazi: uhambo ngexesha

Imvelaphi ye sedata umhla emva ekuqaleni kwekhompyutha, xa i dati zazigcinwe kumakhadi agqojoziweyo nakwiiteyiphu zemagnethi. Ukulawula olu lwazi kwakuyinkqubo enzima kwaye ifuna izakhono ezithile.

60's:

  • Eli gama lazalwasedata” ukubonisa ingqokelela ye dati kwabelwane ngabasebenzisi abaninzi.
  • Iinkqubo zokuqala zolawulo ziyaphuhliswa sedata (I-DBMS), njenge-IMS kunye ne-IDMS.
  • Imodeli yoluhlu lwemigangatho iba yeyona paradigm yombutho we dati.

70's:

  • U-Edgar F. Codd wazisa imodeli yobudlelwane, eguqula indlela yokukhulelwa. sedata.
  • SQL (Structured Query Language) yenzelwe ukubuza imibuzo sedata ubudlelwane.
  • Abokuqala bayazalwa sedata zorhwebo ubudlelwane, ezifana Oracle kunye DB2.

80's:

  • Ukusasazeka kweekhompyuter zobuqu kukhokelela ekuzalweni kwe sedata yedesktop, efana noFikelelo kunye neFoxPro.
  • Imodeli yomncedisi womxhasi iba yinto edumileyo yokulawula sedata isasazwe.

90's:

  • IWebhu yeHlabathi eBanzi iyazalwa sedata ukuthatha indima ebalulekileyo kulawulo lwe iiwebhusayithi kunye nezicelo zewebhu.
  • Ezokuqala ziyaphuhliswa sedata ejoliswe ekudityanisweni dati kunye nekhowudi.

2000s:

  • Bazalwa sedata NoSQL ukulawula dati engalungiswanga, njenge-XML kunye ne-JSON.
  • Il ilifu ikhompyutha iba yinyani ei sedata in ilifu zibonelela ngeemodeli zenkonzo entsha.

Namhlanje:

  • I sedata balilungu elisisiseko kuyo nayiphi na inkampani okanye umbutho.
  • Itekhnoloji ye sedata iyaqhubeka nokuvela, kunye nokuqaliswa kweeparadigms ezintsha ezifanaingqiqo kunyeInternet Yezinto (IoT).

Ezinye zezinto ezibalulekileyo:

  • Ngo-1964: U-Edgar F. Codd upapasha iphepha lakhe le-seminal kwimodeli yobudlelwane.
  • 1970: Ulwimi lweSQL lwenziwa.
  • 1983: I-Oracle ikhupha eyokuqala sedata ubudlelwane borhwebo.
  • I-1995: IWebhu yehlabathi ebanzi iyazalwa.
  • 2000: Kuzalwa owokuqala sedata NoSQL, MongoDB.
  • 2006: Amazon IiNkonzo zeWebhu zisungula yayo sedata in ilifu, RDS.

Ikamva le sedata:

  • I sedata iya kuqhubeka nokuvela ukuze ihlangabezane neemfuno ezintsonkothileyo ezikhulayo zamashishini kunye nemibutho.
  • L 'ingqiqo kunye ne-IoT iya kuba nempembelelo enkulu kwitekhnoloji yekhompyuter sedata.
  • I sedata ziya kudibana ngakumbi kwaye zisasazwe.

Isiphelo:

Imbali ye sedata luhambo olunomdla olubone ukuvela kobu buchwepheshe busisiseko kulawulo lolwazi. Ikamva le sedata izele yimingeni kunye namathuba, kunye neingqiqo kunye ne-IoT ethembisa ukuguqula indlela esigcina ngayo, ukulawula kunye nokuhlalutya idatha. dati.

Kutheni kusetyenziswa oovimba beenkcukacha

I sedata Zisetyenziselwa izizathu ezininzi:

Umbutho: I sedata ikuvumela ukuba ugcine imiqulu emikhulu ye dati ngendlela enocwangco necwangcisiweyo, iququzelela uphando kunye nokufikelela kulwazi.

Ukusebenza kakuhle: I sedata ukunika izixhobo zokulawula i dati ngokufanelekileyo, ngokufaka ngokukhawuleza nangokukhuselekileyo, ukuguqulwa kunye nemisebenzi yokucima.

Uhlalutyo: I dati igcinwe ngaphakathi sedata zinokuhlalutywa ukufumana ulwazi oluluncedo kwishishini, ukuchonga iintsingiselo kunye nokwenza izigqibo ezizizo.

ukhuseleko: I sedata zinika iimpawu ezininzi ukukhusela yakho dati ukusuka ekungeneni okungagunyaziswanga, ukungena kunye nelahleko ngengozi.

Ukwabelana: I sedata ikuvumela ukuba wabelane dati ngabasebenzisi abaninzi ngendlela ekhuselekileyo nelawulwayo, iququzelela intsebenziswano kunye nokusebenzisana.

Ukubaleka: I sedata inokukalwa ukuhlangabezana neemfuno ezikhulayo zokugcina kunye nokucubungula dati.

Ukuthembeka: I sedata iqinisekisa imfezeko kunye nokungaguquguquki dati, nokuba kukho iimpazamo okanye ukusilela kwehardware.

Ubukho: I sedata zinokuqwalaselwa ukuba zifikeleleke kwi-24/24 kuso nasiphi na isixhobo.

Imizekelo yokusetyenziswa:

  • Idatha yobuqu ye abathengi: khumbula i dati of abathengi kwimisebenzi urhwebo, inkonzo yabathengi kunye nohlalutyo.
  • Iintengiselwano zemali: ukurekhoda iintengiselwano zemali ukujonga imeko yezoqoqosho kunye neenjongo zerhafu.
  • Iimveliso kuluhlu: lawula iimveliso kwisitokhwe kwaye ubeke iliso kwiintengiso.
  • Amanqaku ebhlog: gcina amanqaku eblogi kwaye uwenze afikeleleke kubafundi.
  • Izithuba malunga Imidiya yokuncokola: khumbula izithuba Imidiya yokuncokola kunye nokuhlalutya intsebenziswano yabo.

Isishwankathelo:

I sedata zisisixhobo esisisiseko sayo nayiphi na inkampani okanye umbutho ekufuneka ugcine, ulawule kwaye uhlalutye imithamo emikhulu ye dati. Banikezela ngeenzuzo ezininzi malunga nombutho, ukusebenza kakuhle, ukhuseleko, ukwabelana, ukulinganisa, ukuthembeka kunye nokufumaneka.


amakhasi

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