Databases aba

Qhalakantsoeng, kapa, haeba ho e nepahetse ho hooa, ba aba polokelongtshedimosetso - e 'se polokelongtshedimosetso joalo, e akarelletsang' maloa a lik'homphieutha amana ka netweke, e mong le e ba tse sebetsang k'homphieutheng moo. The bothe tsena tsohle Software le hardware baka polokelongtshedimosetso abelanoang. Aba polokelongtshedimosetso kantle shebahale joaloka polokelongtshedimosetso ba tloaelehileng sebakeng seo, hardware boikutlo ba bona ba sa bonahale ka ho basebelisi. Aba tsamaiso ea taolo ea laolang nodes tsohle polokelo le e fana ka ya data ya kgokelo.

Kristofer Deyt, e tsejoang polokelongtshedimosetso setsebi sa renown lefatše, e tsejoa makgetheng leshome le metso e ka sehloohong e lokelang ho ba le databases tsohle aba: 1) boikemelo ea moo, 2) e tsoelang pele ho sebetsa, 3) ikemetseng nodes, 4) bonaletsang fragmentation, 5) le ho sebeletsa pepeneneng ea sebakeng se, 6) sebetsana dipotso itseng, 7) bonaletsang boikatiso, 8) ikemetseng ea thepa e, 9) aba kgwebisano sebetsa, 10) marangrang pepeneneng, 11) ikemetseng tsa tshebetso ya ho sebetsa 12) ikemetseng tsa databases e khethileng.

Nahana ka litšobotsi tse ka sehloohong tse, ho ea ka Data, tla lokela databases tsohle aba, ka ho qaqileng le ho feta.

boikemelo Local bolela hore e mong le e unit trust nosi laola ya data ya botlaaseng lona.

Tsoelang pele tshebetso. Mothating ona K. Date boleloa hore ho kena ya data lokela ho ho fuwa tswelela pele, 'me ho sa tsotellehe hore na ba ba teng ka noute efe kapa efe. Hape, e lokela ho tsotellehe hore tshebetso efe kapa efe e etsoang ka nako le k'homphieutheng, sebakeng seo.

Ikemetseng nodes. Tsamaisong se setle, nodes tsohle baa lekana 'me ba sa itšetleha ka e mong le e tse ling. E mong le e k'homphieutheng, e teng ka noute e lopolla ya data ka sebaka sa ba ile ba kopanela le litokelo tsa se tšoanang. databases tsohle tse etsang k'homphieutheng aba, ba ikhopolang ho leng le sireletswa ho fihlella tshebediso e sa dumellwang.

Sebeletsang pepeneneng fragmentation. Sena se tšobotsi e hloka hare k'homphieutheng, tšehetso aba bewa ga ya data tse ha e le hantle e 'ngoe.

sebakeng ho sebeletsa pepeneneng. Users ba kena ka databases aba, ha baa lokela ho tseba eng kapa eng eo noute e fumaneha 'meleng ho eona boitsebiso bo hlokahalang.

Aba potso Processing. polokelongtshedimosetso le lokela ho ho phetha dipotso ajoa SQL sampole.

Sebeletsang pepeneneng boikatiso. Ka kakaretso, ho ajoa - ke ho fetiswa ha sepheo fetohile ho tloha k'homphieutheng, e mong ho e mong. Moelelong oa boitsebiso boo e ne a bua ka phetiso ya data dipakeng tsa nodes ka litsela tseo hlokomela bonahaleng tsa liketso tsena ho mosebedisi ka.

Hardware boipuso bolela hore gateways aba polokelongtshedimosetso marangrang a ka sebetsa dikai ya khomphuta ya hao le teng.

Processing oa ditransekshene aba e tšoaroa joaloka mokhoa bakeng sa tlhabololwa ga k'homphieutheng aba sebelisa litaelo Update, hlakola, Insert, nakong ea ho bolaoa ha eo ha e lahlehileng botšepehi le tumellano ba boitsebiso bo bolokoa polokelongtshedimosetso ena.

Boipuso ho tswa ho tshebetso ya ho sebetsa a kena hore tsamaiso dikarolo ka mathang oona tsamaisong efe kapa efe ya ho sebetsa.

Network ho sebeletsa pepeneneng bolela hore mokhoa oa ho likarolo tsohle tsa k'homphieutheng aba hloka feela le mabapi marangrang.

Boipuso ho tloha k'homphieutheng,. Ena ke karolo ea bohlokoa ea tsamaiso ea hloka le matla a ho sebetsa le databases tsohle ajoa ho tloha barekisi fapaneng, ho akarelletsa le le menyetla e lokela ho ba fumaneha ho batla le ho updates tsa.

Joalokaha re ka bona, le tlhaloso ea K. Data bakeng polokelongtshedimosetso aba hlalosa e le mohaho o ka litlamo tsa ka fokola, e bopilweng ka nodes ikemetseng tse databases moo. Tsena LBD ikemetseng, le fana ka ho fihlella ho databases ajoa ho tloha barekisi fapaneng. The nodes theha e mabapi pakeng tsa tse ya data merero e tsoanang. The topology tsa polokelongtshedimosetso aba bopa le libaka oona tsamaisong tlhahisoleseding le ya data boikatiso phallang.