Un uhlelo lokuphathwa kwemininingwane egciniwe Kuyinto ebalulekile lapho ufuna ukusebenzisa uhlelo, funda konke okuhlobene nale ndatshana.
Izinhlelo ezahlukahlukene zabaphathi bemininingwane. futhi amagama ayo yi-SGBD.
Luyini uhlelo lokuphathwa kwedatha?
Yizinhlelo ezahlukahlukene noma isoftware eyenzelwe ukudala noma ukuphatha ngendlela engcono idatha ehlukile esetshenziswayo, ukudala ibhange noma i-database. Imininingwane yolwazi iyizitolo zemininingwane mayelana nakho konke okwenziwa ngumsebenzisi noma uhlelo uqobo.
Zenzelwe ini?
Izinhlelo zokusebenza ezisebenza njengesisekelo sokwakhiwa kwalezi zitolo zedatha, futhi zivumela umuntu ukuthi akwazi ukuhlela nokusebenzisa lonke ulwazi ngendlela afisa ngayo. Ukulungiswa kwezitolo zedatha nakho kunganikezwa ngolimi lohlelo, ukuguqulwa okuphelele.
I-DBMS ilungele ukuthola imininingwane elahlekile, uma kungenzeka isuswe ngengozi noma uma igciwane lonakalise ingxenye yohlelo. Imvamisa, banamathuluzi asekela ukusetshenziswa kwabo, okwenza kube lula ukuthi umsebenzisi abe nemibiko uma ngabe kukhona uhlobo lwephutha futhi, ngaphezu kwalokho, imelela imininingwane ngendlela ebonakalayo.
Izinzuzo zalawa mathuluzi amandla abo amakhulu okungena kubasebenzisi abahlukile, abangeke babe nenkinga yokungena ohlelweni. Ngokulandelayo, yonke imininingwane ekhona kulezi zisekelo iyimfihlo ngokuphelele, igwema noma yikuphi ukungena kwabantu besithathu.
Zingasetshenziswa kuphi?
Izinhlelo ze-Database zinamandla kakhulu ngenxa yemisebenzi yazo emikhulu. Bajwayele ukusebenzisa inqwaba ye-RAM nenkumbulo yesitoreji, ngenxa yalokhu kunconywa ukusebenzisa izinkumbulo ngokucubungula okuphindwe kabili nangememori ebanzi.
Uhlelo lungagcinwa ku-NAS, DAS, naku-SAN. Isitoreji se-NAS wuhlelo olugcina lonke ulwazi kunethiwekhi, i-DAS isebenza njenge-hard disk storage kanti i-SAN iyisitoreji esakhiwe ngokwakhiwa kwesoftware, esiklanyelwe ukugcina konke okusohlelo.
Yini eyenza uhlelo lokuphathwa kwedatha?
I-DBMS, njengoba iyisistimu ebanzi yokwakhiwa nokulondolozwa kolwazi, idinga izinto ezahlukahlukene ukusiza ekusebenzeni kwayo: injini yohlelo, incazelo yedatha, uhlelo lokukhohlisa, uhlelo lokukhiqiza uhlelo kanye nohlelo lokuphatha.
motor
Nguye owenza izenzo eziceliwe ohlelweni lokuphathwa kwedatha, ukuphatha ukufaka i-database nokuphatha imininingwane, kuze kufike ezingeni lokukwazi ukumela idatha egciniwe.
Uhlelo oluchaza idatha
Isichazi sedatha yiso esithuthukisa izichazamazwi zolwazi olugciniwe futhi, futhi, esivumela imininingwane ukuthi ihlelwe ngamafayela.
Ukuphatha uhlelo
Uhlelo olubalulekile lokukhohlisa luvumela ukuguqulwa kolwazi, okungukuthi, lungahlelwa, lususwe noma lushintshwe kusuka ku-database. Kungukuxhumana kokuqala umsebenzisi anakho, ngoba oxhumana naye wokuqala ukusebenzisa imininingwane akhiwe lapha.
Uhlelo lwe-generator yesicelo
Uhlelo lwe-generator yohlelo lokusebenza luvumela ukwenziwa kwezinhlelo, ngoba lisebenzisa amakhodi wokuhlela kanye nokuhlangana kwedatha, okusho ukuthi, kuvumela ukuthuthukiswa okuphelele kwalo lonke uhlelo lokusebenza.
Uhlelo lokuphatha
Ukusuka lapha lonke ulwazi olukuhlelo lwedatha luyaphathwa, okunikeza umsebenzisi ithuba lokuthi enze izikhalazo noma athole imininingwane ethile uma ilahlekile.
Izinhlobo zesistimu yemenenja yedatha
Kunezinhlobo ezahlukahlukene zezinhlelo zokuphatha ze-database, ezinezici ezihlukile nemisebenzi, okuthi ekugcineni kuvumele ukwakha isitolo solwazi.
I-Microsoft SQL Server
Luhlelo lokuphathwa kwedatha, olufakwe ohlelweni lokusebenza lweWindows, ngaleyo ndlela kube ithuluzi iMicrosoft eselivele linikeza lona njengesevisi. Ulimi lwekhodi yalo ukuze lusebenze njengesisekelo yiTransact-SQL, okuwulimi lokusesha oluhlelekile, oluvumela ukuba ne-oda lokwakhiwa kohlelo.
I-SQL Server ayinzima ukuyisebenzisa, ngoba isebenzisa okubonwayo ukukhombisa umsebenzi owenziwe uhlelo kanye ne-database. Futhi, ngenxa yokuxhumeka kwayo neWindows, ivumela ukwandisa uhlelo lokusebenza nokuvikela imininingwane esetshenziswayo.
Uhlelo lokuphathwa kwe-SQL Server lusindisa futhi lunikeze imininingwane yekhwalithi, ngaphandle kwamaphutha noma izithiyo. Uma iphutha livela, likuvumela ukuthi usethe kabusha idatha nezinketho ukusingatha noma yiziphi izinkinga.
I-PostgreSQL
Kuyindlela evulekile yokuphathwa kwedatha yomthombo, okungukuthi, ingashintshwa ukuze i-database yenziwe kahle. Ukuma kwayo kubheke entweni, okungukuthi, izindlela ezingezona ezangempela ezisebenza ukulingisa okuthile kwangempela; imininingwane lapha iyabonakala.
Ngenxa yomthombo wayo ovulekile, ivumela amanani ahlukile wolwazi ukuthi asetshenziswe ngaphandle kokubambezela uhlelo. Ulimi lwayo lokuhlela luyehluka futhi, ngenxa yokuthuthuka kwalo okuphezulu, isebenzisa isilawuli sokuguqula okuningi, esenza iseva isebenze kangcono.
Ngenxa yobukhulu bayo obukhulu, kufanele isebenzise injini evumela ukuthi kube yiyo ecubungula lonke ulwazi futhi, ngokungeziwe, ilawula konke ekucubungulayo. Ivumela ukusebenzisa izilimi ngekhodi kanambambili ne-hexadecimal, ukuze uhlelo lungagcini.
Yikhodi eyonga kakhulu, evumela noma ngubani ukuthi ayisebenzise futhi asebenze kuyo. Ngaphezu kwalokho, kuvumela ukusebenza ngamapulatifomu ahlukahlukene noma amasistimu wokuhlela wedatha, kube lula kakhulu ukukusebenzisa.
MySQL
Ingenye yezinhlelo zokuphatha idatha eziphelele kakhulu nezisebenziseka kalula, ngoba ivumelana nezidingo zomuntu. Ngoba kulula ukuyilawula, umsebenzisi angakha i-database ephelele yezinhlelo zabo zokusebenza zewebhu, avumela abantu ukuthi baphathe futhi bafake imininingwane ngaphandle kwenkinga nokuphazamiseka.
I-MySQL ivumelanisa cishe zonke izilimi zekhodi, ivumela ukwakheka okungcono kohlelo lwe-database. Ngoba uhlelo lusetshenzisiwe, idatha ehlukile ingasetshenziswa noma ihlelwe ngasikhathi sinye.
Le nto ivumela abantu abaningana ukuthi babambe iqhaza ekuhlelweni noma basebenzise isisekelo sekhodi ngaphandle kokuphahlazeka kohlelo lokusebenza.
Uma uyithandile le ndatshana, ngikumema ukuthi ufunde: «Yini i-MVC? Yazi lokhu kwakhiwa kwesoftware! », indatshana ephelele ngalolu hlobo lwesoftware nokuthi isebenza kanjani.
https://www.youtube.com/watch?v=4BjnytBHqwI