Yolwazi Distributed

Bahlakazeka, noma, uma ilungile ukubiza, egciniwe basakaza - kungcono database ezinjalo, okuhlanganisa inombolo lwamakhompyutha zixhunywe inethiwekhi, ngamunye nesebenzela database wendawo. Isiqalo nesigcino zonke lezi software kanye hardware kudala semininingwane esabiwe. Okusatshalalisiwe semininingwane ukubukeka ngaphandle sengathi abavamile egciniwe yendawo, hardware yabo onesimo awabonakali abasebenzisi. Okusatshalalisiwe uhlelo lokulawula zibamba bonke ISIZINDA isitoreji futhi inikeza uxhumano lwedatha.

Kristofer Deyt, uchwepheshe semininingwane eyaziwa odumo emhlabeni, luvete izici nambili main okufanele ube nawo onke yolwazi basakaza: 1) ukuzimela lendawo, 2) ukusebenza okuqhubekayo, 3) ISIZINDA ezimele, 4) kwehlukana esobala, 5) obala we indawo, 6) sicubungula imibuzo ethize, 7) ukufanisana esobala, 8) esizimele imishini, 9) basakaza kuthengiselana ukucutshungulwa, 10) inethiwekhi obala, 11) ezimele yesistimu yokusebenza 12) ukuzimela yolwazi ekhethiwe.

Cabanga izimfanelo eziyinhloko, ngokuvumelana Data, kuyomelwe yonke yolwazi zisakazwe, kabanzi.

ukuzimela Local kusho ukuthi iyunithi ngayinye ngokuzimela uphatha idatha kwesisekelo salo.

ukusebenza okuqhubekayo. Kuleli qophelo K. Usuku Kuthiwa ukufinyelela kudatha kumele inikezwe njalo, futhi kungakhathaliseki ukuthi akuphi ngasiphi engeyokuqala. Futhi, kufanele lutho ukuthi iyiphi msebenzi kwenziwe okwamanje egciniwe yendawo.

ISIZINDA Independent. Ngo uhlelo elikahle, bonke ISIZINDA bayalingana futhi ezimele nomunye. egciniwe ngamunye itholakala ku engeyokuqala eletha idatha endaweni okwabelwana ngazo amalungelo afanayo. Zonke yolwazi ezakha database zisakazwe, self-equkethwe futhi evikelwe ezintweni ezifana nokufinyelela okungagunyaziwe.

Esobala kwehlukana. Lokhu sici sidinga yangaphakathi semininingwane ukwesekwa ukubekwa asakazwa idatha eqinisweni eyodwa.

indawo obala. Abasebenzisi abasebenzise ukufinyelela e yolwazi zisakazwe, kufanele lutho mayelana nokuthi iziphi izinhlelo node iyatholakala ngokwenyama kulo ulwazi oludingekayo.

Okusatshalalisiwe Umbuzo Icubungula. Ulwazi egciniwe kumele uyenzele basakaza imibuzo SQL isampula.

ukufanisana esobala. Ngokuvamile, ukuzungeza - iyona ukudluliselwa izinto washintsha komunye semininingwane kwenye. Esimeni semakhaya le nto kwakusho nokudluliswa kwemininingwane phakathi ISIZINDA ngezindlela ukuqinisekisa ukuthi lokungabonakali lezi zinyathelo umsebenzisi.

Hardware ukuzimela kusho ukuthi kuphuma basakaza semininingwane inethiwekhi angasebenza noma iyiphi onobuhle ikhompyutha.

Ukucubungula ukuthengiselana basakaza lithathwa njengenye indlela nokubuyekeza database basakaza usebenzisa imiyalo buyekeza, susa, FAKA, lapho kukhishwa ngalo akalilahlile ubuqotho bomsebenzi ulwazi olugcinwe kwi-database.

Ukuzibusa ngaphandle ohlelweni lokusebenza isikisela ukuthi izingxenye system kungenziwa egijima yiluphi uhlelo lokusebenza.

Uxhumano obala kusho ukuthi ukufinyelela zonke izinto database basakaza kudinga kuphela ukuxhumana kwenethiwekhi.

Independence kusukela egciniwe. Lesi isici esibalulekile uhlelo kudinga ikhono ukusebenza zonke yolwazi isakazwa nabathengisi ezahlukahlukene, kufaka phakathi amathuba kufanele kube atholakale yosesho kanye izibuyekezo.

Njengoba singabona, kwencazelo K. Idatha ye-database basakaza uwuchaza isakhiwo ngezibopho ababuthakathaka, ehlanganisa ISIZINDA ezimele ukuthi yolwazi zendawo. Lezi LBD ezizimele, futhi ukunikeza ukufinyelela yolwazi isakazwa nabathengisi ezahlukene. ISIZINDA yakha ukuxhumana phakathi ukuthi idatha ziphindaphindeke nakwezinye izindawo. I yomphindwa database basakaza lwakha ezindawo uhlelo ulwazi kanye nedatha ukufanisana notshwala.