Yenza ukukhupha kwi-spreadsheet kwi-database
Iinkcukacha zibonelela ngendlela ehleliweyo yokugcina, ukulawula nokufumana ulwazi. Benza njalo ngokusebenzisa iitafile. Ukuba ujwayelene nezipredishithi ezifana ne- Microsoft Excel , mhlawumbi sele ujwayele ukugcina idatha kwifom yefayile. Akuninzi okwelula ukukrazula kwi-spreadsheets kwiinkcukacha zolwazi.
Iinkcukacha ngokumalunga namaSpreadsheets
Ienkcukacha zithe bhetele kakhulu kuneepredishithi zokugcina idatha eninzi, nangona kunjalo, kunye nokucwangcisa loo datha ngezindlela ezahlukeneyo. Uhlangabezana nombane weenkcukacha zonke ixesha lakho lobomi bemihla ngemihla.
Umzekelo, xa ungena kwi-akhawunti yakho yasebhanki ye-intanethi, ibhanki yakho kuqala iqinisekisa ukungena kwakho usebenzisa igama lomsebenzisi kunye nephasiwedi uze ubonise ukulinganisela kwe-akhawunti yakho nayiphi na intengiso. Yisiseko sedata esisebenza emva kweembonakalo ezihlolisisa igama lakho lomsebenzisi kunye nephasiwedi, kwaye ke ikunikezela ukufikelela kwi-akhawunti yakho. Iifayile ezigciniweyo zeenkcukacha zakho zokuthengisa ukuze zibonise ngomhla okanye uhlobo, njengoko ucela.
Nazi ezinye ezimbalwa zezenzo ozenzayo kwiziko ledatha ezinokuba nzima, ukuba akunakwenzeka, ukwenza kwi-spreadsheet:
- Ukufumana zonke iirekhodi ezihambelana nemigangatho ethile
- Ukuhlaziywa kwamarekhodi ngobuninzi
- Iirekhodi ezibhekiselele kumnqamlezo kwietafile ezahlukeneyo
- Ukwenza izibalo ezixineneyo
Makhe siqwalasele ezinye zeengcamango ezisisiseko emva kwedatha.
Izixhobo zeDatabase
Isiseko sedatha senziwe ngamatafula amaninzi. Njengetafile ze-Excel, iithebula zeenkcukacha zeenkcukacha ziquka iikholomu kunye nemigqa. Ikholam nganye ihambelana nombono , kwaye umqolo ngamnye uhambelana nerekhodi enye. Itafile nganye kufuneka ibe negama elikhethekileyo kwiziko lokugcina.
Ngokomzekelo, qwalasela itafile yedatha equlethe amagama kunye neenombolo zomnxeba. Unokuba mhlawumbi usethe iikholomu ezibizwa ngokuba ngu "FirstName," "LastName" kunye ne "TelephoneNumber." Emva koko uqala ukufaka imiqolo phantsi kweekholamu eziqulethe idatha. Kwitheyibhile yolwazi lokuqhagamshelana kwishishini kunye nabasebenzi abangama-50, siya kuphepha ngetafile equle imigqa engama-50.
Inxalenye ebalulekileyo yetafile kukuba ngamnye kufuneka abe nekholamu eyona nto yokuphambili ukuze umqolo ngamnye (okanye irekhodi) inensimu ekhethekileyo ukuyichonga.
Idatha kwisiseko sedatha ikhuselwa ngakumbi yizinto ezibizwa ngokuba yimithintelo . Imiqobo inyanzelisa imithetho kwi-data ukuqinisekisa ukuthembeka kwayo. Umzekelo, umqobo oyingqamaniso uqinisekisa ukuba isisiseko esisisiseko asikwazi ukuphindiwe. Ikhonkco yokutshekisha ilawula uhlobo lwedatha ongayifaka-umzekelo, iNdawo yegama ingamkela umbhalo ocacileyo, kodwa inamba yenombolo yokhuseleko yentlalo kufuneka ifake isethi ethile yamanani. Zininzi nezinye iintlobo zeengxaki ezikhoyo, ngokunjalo.
Enye yezona zinto zinamandla kakhulu kwi-database yikhono lokudala ubudlelwane phakathi kweetyule usebenzisa izitshixo zangaphandle. Umzekelo, unokuba neetafile zabaThengi kunye netafile zee-Orders. Umthengi ngamnye unokudibaniswa nomyalelo kwitafile zakho zomyalelo. Itheyibhile yomyalelo, ngokubhekiselele, inokudibaniswa neTekisi yeMveliso. Olu hlobo loyilo lubandakanya isiseko sedatha kunye nokwenza lula uyilo lwenkcukacha yakho ukuze ukwazi ukuhlela idatha ngodidi, kunokuba uzame ukubeka yonke idatha kwitafile enye, okanye iibhola ezimbalwa nje.
Inkqubo yoLawulo lweDatabase (iDBMS)
Idatha egcina idatha kuphela. Ukusebenzisa ngokuchanekileyo idatha, udinga i-Data Management System (DBMS). I-DBMS yile datha ngokwalo, kunye nayo yonke isofthiwe kunye nokusebenza ukufumana idatha esuka kwisiseko sedatha, okanye ukufaka idatha. I-DBMS yenza iirekhodi, iqinisekisa imithetho kunye neengqinamba zeenkcukacha zeenkcukacha, kwaye igcina isicwangciso seenkcukacha. Ngaphandle kweDBMS, i-database iphela iqoqo yeebits kunye ne-bytes ezingenanto.