Ukudala database: izindlela kanye nezixazululo ekhona

Lesi sihloko uchaza inqubo program wayebizwa ngokuthi "ukudalwa database." Sichaza ukuthi ngempela eyisicefe. Kungcono, yebo, abantu abanayo isikhathi khulula kulezi "ehlathini" akayi. Kulula kakhulu ukuphathisa le ochwepheshe matasa. Nokho, namuhla leli inthanethi igcwele ema-izikhangiso ezinjalo. Ngokwesibonelo, kukhona inethiwekhi ezizimele Ukuhwebelana noma professional efanayo, ungakwazi ukuthola kalula izihloko kunoma iyiphi exchange. Ukuze wenze lokhu udinga ukusebenzisa ukusungulwa uhlelo ezifana isihloko evamile, echaza umsebenzi kudingekile.

Kuyini ukudalwa database? Zimbili izinhlobo semininingwane: ideskithophu amaklayenti-server. Ukudala ideskithophu yolwazi udinga uhlelo ezifana Ukufinyelela. Uzokwazi ukuthola noma ngayiphi suite ihhovisi kalula. Ukufinyelela manje ukhiqiza ngokuqinile Infra-Office, i-Microsoft nezinye Abadali eziningi ehhovisi Suites. Njengoba for the imodeli amaklayenti-server, umfuziselo elula ezingase zithathwe ukuqeqeshwa amabutho ' »Uhlelo eDelphi. Serious semininingwane namuhla zibhaliwe Oracle futhi Visual Fox Pro. Lezi ezisekelweni isofthiwe anemisila ithuluzi sokuqhafaza ngokudala izicelo kusetshenzwe database e 500 000 no-1 million noma amashumi ezigidi imigqa.

Cabanga Emi epulatifomu enhle kakhulu izinhlelo zakudala Delphi 6.0. Sithi ngesikhathi esisodwa ukuthi ukudalwa database in eDelphi - it is hhayi nje nokwamukela amafayela * .db noma * BDB, nokufaka ku-PC, Tuning ezishintshayo. Ngakho, in eDelphi 6.0 kudala ifayela egciniwe in a subroutine elise kwimenyu main IDE, Usuku Base Desktop 6.0.

Lapha uzothola zonke amathuluzi owadingayo ukuze udale ifayela egciniwe, injongo yawo nokuthi uhlobo pre-ukugcwaliswa. Qaphela ukuthi izotholakala ukudalwa kanye nokusebenza kuphela ngalawo mafayela okuyiwona umshayeli efakwe emsamo. Ngokwesibonelo, ukusebenza uhlobo Fox Visual Pro 9.0 kuyadingeka ukuze ufake ngaphezulu yangaphandle yesistimu yokusebenza umshayeli.

Ngokuphathelene database uhlelo umsebenzi, wadala in eDelphi 6.0, ngaphandle nokuhlalisana yayo yesikhulumi, lokhu inkinga isixazululekile ngokufaka futhi ukumisa isofthiwe Data Base Engine 6.0 iphakethe (bde).

Ngakho, uma uzimisele ukusebenza uhlobo lwefayela Paradox ke ngokubhala uhlelo kwifolda ethile kwi-hard drive yakho, bese kudingeka ukuba ubhalise izilungiselelo iphakethe Data Base Engine 6.0, ezihlanganisa izindlela ifayela, izakhiwo zabo, kanye negama egciniwe. Leli cebo isebenza uma uhambisa udala izinhlelo kwenye ikhompyutha.

Iphakheji Data Base Engine 6.0 kumele efakwe kwi computer lapho ufaka Delphi 6.0 eklanyelwe ikhodi umshini.

Ukudala database Delphi 6.0 ngokwanele ezenzakalelayo. Uhlelo aphansi ukugcina idatha nge ifayela egciniwe etholwe nje ukuchofoza izinkinobho ezimbalwa. Lapha, ubunzima main itholakala ukuqaliswa amafomu semininingwane zingubudlelwane. Ngakho PDNF 3 kungenziwa igcwaliseke ngokubeka amatafula amabili DBGRID. Futhi ukulungiswa izinhlobo ezahlukene imibiko ku QReport - lena indaba okungahambisani ngisho ufuna ngayo uma icindezelwa. Engingakusho nje, kungcono usethe ikhodi Uhlelo akusho aphonse kubhasikidi njengoba ngamunye akhawunti yomsebenzisi kubantu abangamazi SQL, kuyodingeka lusahleleka futhi ...

Finyelela ukudala database suite ehhovisi akunzima. Ukuya ohlelweni, uthola ukufinyelela amathuluzi adingekayo ukudala noma uhlele i-database ekhona. Lapha akudingeki sizame kakhulu ukwakha umbiko noma uhlobo olusha le phrojekthi. Yonke into isinqumo cishe intuitively. Ngakho, ukuze usungule uxhumano phakathi amatafula usebenzisa ithuluzi sokuqhafaza ukuthi cishe okukodwa ungakwazi ukuxhumanisa ukhiye amatafula olifisayo ezimbili ezidingekayo.

Lesi sihloko sixoxa kuphela ukudalwa database ngokuqeqesha ideskithophu amaphakheji. Ngokuphathelene izinhlelo sina, futhi kungesemehlweni ukuba khona kwalezi ezisekelweni awusoze ukuxazulula inkinga aphethe yolwazi enkulu.