DB - reira ... te momo me ngā āhuatanga o te pātengi raraunga

DB - he acronym e tu hoki "pātengi raraunga" ranei "pātengi raraunga" (i runga i te horopaki). I roto i tenei tuhinga, whakaaro tatou e te reira / e ratou, he aha e me te wahi ki te tono. aparau i hoki nga DBMS me pātengi raraunga - ko reira te taua e kore ranei.

kupu

tuku Pātengi Raraunga ki etahi pātaka hanganga o ngā mōhiohio. DB - Ko reira ano hoki he tauira kōrero, te kaha ki te roto i te tetahi raraunga, me te kia āhei e te tono ratou. Kua mahi takitaha o tatou ki te pātengi raraunga i te iti rawa kotahi, engari e kore e taea e ara imi i te reira i, mo te tauira, mā te tomo i te wā rapu, tahuri tatou ki te pūtake nui-tauine mō raraunga mōhiohio motuhake.

DBMS - Ko tetahi acronym, e tu hoki "pūnaha whakahaere pātengi raraunga". I roto i te tikanga whānui, tohu ratou he momo o rongoā pūmanawa, me e taea e koe te whakarite i te raraunga pātengi raraunga. E pā ana tēnei ki te whakakī o te turanga mōhiohio, tono i te reira, te muku, te tāruatanga, tātari me te nui atu.

puka pātengi raraunga

I roto i te ariā pātengi raraunga, i reira e rave rahi momo o ratou. i reira e:

• pātengi tūhonohono (i te pā ana kupu Ingarihi, i whakamāoritanga rite "hononga") - e te āhuatanga e whanaunga, ka whakaatuhia hei huinga o hinonga kōtuitui o. Ko te whakamutunga e aroaro i roto i te puka o papa, e roto i te raraunga pātengi raraunga. Ko te tino noa tenei momo o te pātengi raraunga.
• Aroākapa - e tika ana ki te taumata o "matua-tamaiti", "pai-kaimahi".
• Whatunga - he peka o te momo o mua.
• Ahanoa-hāngai, e mahi tika ki te tikanga hōtaka e tika ana (Plo).

Kia whakaaro tatou ia o ratou i roto i te taipitopito, ka tu i te ara ki te whakaaro taketake me ngā ariā o te pātengi raraunga.

DB - Ko reira he tohu?

He pātengi raraunga tūhonohono i roto i to ratou kanohi mua e kore e meinga fifi mō te māramatanga - he tohu ki te mōhiohio. Hei whakamārama, ka taea e koe te karanga mo te awhina ko te tino pai-mohiotia pātengi raraunga o kamupene "Microsoft" - "Ikehe", he wahi o to ratou mōkihi tono tari mua.

I roto i te tepu pātengi raraunga tūhonohono i ngā tāurunga (rarangi) me mara (tīwae). Kei te tuatahi mōhiohio tonu, te raraunga i roto i te mua - he whakaahuatanga o te mea te auraa tuhi. Hei tauira, te mara - "ingoa" urunga - "Catherine".

Hoki mara tautuhi momo uara. kia ratou tau, te huru, te rā, te wā, me ētahi atu ano, kua ia tepu ki te waiho i te mara matua - .. Record reira ahurei tautuhi raraunga.

kia mohio ki te reira e te pātengi raraunga ano - te reira e kore te mea he tepu. Ka taea te rongoa te pātengi raraunga i tetahi ki te maha rau tepu, i runga i te nui me te kanorau o te mōhiohio rānei.

Te whanaungatanga i waenganui i ngā ripanga

Ki te whakarite i ngā hononga i waenganui i nga papa i roto i te pātengi raraunga e te aronuinga. Communications he:

• "Ko tētahi-ki-tetahi" - ia record i roto i te tepu hāngai ki tetahi anake record i tetahi atu pereti.
• "Ko tētahi-ki-he tokomaha" me "maha-ki-he tokomaha". kia hāngai Record ki te maha o te tepu e pā ana. Tērā (ahua tuarua).
• "E rave rahi-ki-he tokomaha". Ehara i te mea uaua ki te imi e i roto i tenei take, e taea te tīpakohia rarangi maha ki te hono rarangi maha o tetahi tepu (whakaritea he hononga taua kei te whakamahi i te tepu atamira, me te rua hononga runga ake momo).

Moving ake a raro

He nui atu te hanganga atu tūhonohono pātengi aroākapa. ahu ratou ki te haapa'o maite. He ko te huānga pakiaka - te "matamata", e kaiwhakahaere manga atu - "kainga" ranei "uri". pātengi raraunga aroākapa - he turanga he hanganga rakau i roto i nei kia kotahi anake te tupuna i ia kōpuku.

Ko te watea ki te whakamahi mō te hanga kaipupuri o ngā mōhiohio hanganga kua whakahau tenei momo: hei tauira, te kōwae hōia turanga te kōnae ranei raraunga kaiwhakahaere. whakaaro te ngoikoretanga te taea hoki ki te kōwae i neke atu i te kotahi matua, me te te matatini o te arorau pātengi raraunga.

whakawhānui whanaunga

Whatunga DB kore whakatau maitai aroākapa ingoa tika i runga. "E rave rahi-ki-he tokomaha" te rerekētanga anake i waenganui i tenei momo o te hononga o mua timata, i roto i tenei take e whakaaturia i roto i te meka e rite ai te tupuna i maha kainga, a ratou, uri, e taea tupu i te maha kōpuku.

tikanga whakaatu ripa

Ahakoa te meka e e whai pānga matua te tepu ki pātengi raraunga tūhonohono, me te aroākapa, whatunga, a taea hoki te māngai i roto i te puka o tepu. Ko te rerekētanga taketake i waenganui i enei momo o - i roto i te parau tumu i te hanga o te hanganga: he nui eumiumi me iti whakahau tūhonohono, whakaritea ki te atu e rua.

kāhua hāngai Ahanoa

tirohia Last momo - he ahanoa-hāngai - te noa iti rawa. Tenei he no te mea he reira rawa motuhake. Matatini hanganga raraunga taua puka turanga ahanoa me te mahi tika ki te reo o te hōtaka ahanoa-hāngai. I whakawhanakehia ratou i roto i nga eighties o te rau tau whakamutunga, me kua kore ano riro nui rongonui no o tona whīwhiwhi me te auau kore tiketike rawa o te tere.