Imiqondo Jikelele Finyelela egciniwe

ngempucuko yesimanje siyidinga yokusingatha njalo nokugcina amavolumu enkulu idatha ahlukahlukene. Futhi, kukhona isidingo njalo ukuqapha imiphumela izinguquko zabo kwamanye amafayela ulwazi. Indlela elula kunazo ukuhlela zonke lezi izinqubo uhlobo database. Ithuluzi Ukugunda for inhlangano kungaba ethandwa uhlelo semininingwane Finyelela.

Uyini DBMS

idatha abahlukahlukene zithathwe futhi agcinwe endaweni ifomu tabular. Kaningi kuyenzeka ukuthi amatafula ambalwa aqukethe ulwazi bahlobene ngandlela-thile. Isiqalo nesigcino lezi amatafula kuhlobene a database.

Ukuze ube nekhono lokusebenzisa ngobuhlakani ngokugcwele idatha kusuka database, kumelwe futhi ungenzele imibuzo. Ukuze lula ukuqedwa kokuqala base ulwazi, ngokuvamile zisebenzisa amafomu eziklanyelwe. Ukuze ukushintsha inqubo kufanele ngaphezu kwalokho usebenzise amamakhro kwezinye izimo. Ukuqoqwa yolwazi kanye namanye amathuluzi yakha uhlelo olubizwa ngokuthi i-DBMS - lawula ukusekela ngokulondoloza uhlelo egciniwe. Isibonelo kungaba Foxpro, Oracle, egciniwe Microsoft Finyelela.

Imisebenzi esemqoka ye-DBMS

Finyelela DBMS yenza imisebenzi ebalulekile elandelayo:

- liqalise izenzo ezidingekayo ngedatha kanye namafomula;

- kusungula izixhumanisi phakathi kumathebula amasethi wedatha;

- ikhono wengeze izicelo.

Zonke yamathuluzi, okuyinto etholakala database MS Access arsenal, yakhelwe ukukhonza ngokugcwele iziqondiso ezimbili eziyinhloko ohlelweni ulwazi. Lokhu inhlangano design kanye ukuguqulwa isakhiwo egciniwe kanye ahlukahlukene kudingekile idatha manipulations.

The main umehluko Database Ukufinyelela

Abaningi nezinye izinhlelo zokulawula ezisetshenziswa program ngokuzenzakalelayo umsebenzi nge yolwazi, egciniwe Ukufinyelela Kulula ukufunda. Kusukela yesikhulumi Russified, kanye okujwayelekile kwayo yonke esibonakalayo MS Office, ngisho abasebenzisi abangenalwazi ngeke uzizwe yimuphi ukungakhululeki ngesikhathi izinhlelo zawo zokuthuthukisa.

Ngesikhathi esifanayo, Access ephelele Uhlelo ukuphathwa amasethi wedatha nazo zonke izimfanelo ezidingekayo. Dala uhlelo ingasetshenziswa hhayi kuphela kwi-computer eyodwa kuphela, kodwa nge amanethiwekhi wendawo.

amathuba Finyelela

Lolu hlelo ikuvumela ukuba adale izinto zokuqala ngesimo amatafula ngamasimu ezinhlobo ezahlukene, ezifana ezinombolo, umbhalo, izithombe, ngisho ole Amasimu.

Ngaphezu kwalokho, ubudlelwano phakathi amatafula inikezwa, lapho impophoma asekelwe ubuyekeze idatha futhi wendlale ukususa uma kunesidingo.

Zonke eziyisisekelo idatha imisebenzi ezifana kokungena, ubuka, ukugcina, ukuthuthukisa, ukuhlunga, ukuhlunga, ukuthola amasampula. Futhi Indexing kwenziwa emasimini akhethiwe, ulwazi lokulawula oyifakile.

Lapho kokuqeda ukubala emasimini ingasetshenziswa usebenzisa amafomula ahlukahlukene.

Database Ukufinyelela - uhlelo elula futhi ziqondakala kangangokuba has zonke izici lezi zicelo okhokhelwayo.