Databases nyob ntawm tus yuam sij khaws, txheeb, thiab sib piv lossis tsim kev sib raug zoo ntawm cov ntaub ntawv. Yog tias koj tau nyob ib puag ncig cov ntaub ntawv ib ntus, tej zaum koj tau hnov txog ntau hom yuam sij: thawj tus yuam sij, tus neeg sib tw cov yuam sij, thiab cov yuam sij txawv teb chaws.
Thaum koj tsim lub rooj ntaub ntawv tshiab, koj raug hais kom xaiv ib qho tseem ceeb uas yuav txheeb xyuas txhua cov ntaub ntawv khaws cia hauv lub rooj.
Vim li cas tus yuam sij tseem ceeb tseem ceeb
Kev xaiv tus yuam sij tseem ceeb yog ib qho kev txiav txim siab tseem ceeb tshaj plaws uas koj yuav ua hauv kev tsim cov ntaub ntawv tshiab. Qhov kev txwv tseem ceeb tshaj plaws yog koj yuav tsum xyuas kom meej tias tus yuam sij xaiv yog qhov tshwj xeeb. Yog tias nws muaj peev xwm hais tias ob cov ntaub ntawv (yav tas los, tam sim no, lossis yav tom ntej) tuaj yeem faib cov txiaj ntsig tib yam rau tus cwj pwm, nws yog qhov kev xaiv tsis zoo rau tus yuam sij tseem ceeb.
Lwm qhov tseem ceeb ntawm tus yuam sij tseem ceeb yog nws siv los ntawm lwm cov ntxhuav uas txuas rau nws hauv cov ntaub ntawv sib txheeb. Hauv qhov no, tus yuam sij tseem ceeb ua raws li lub hom phiaj ntawm tus taw tes. Vim yog cov kev sib koom ua ke no, tus yuam sij tseem ceeb yuav tsum muaj thaum cov ntaub ntawv raug tsim, thiab nws tsis tuaj yeem hloov pauv.
Kev xaiv tsis zoo rau cov yuam sij tseem ceeb
Dab tsi qee tus neeg yuav xav txog qhov kev xaiv pom tseeb rau tus yuam sij tseem ceeb tuaj yeem yog qhov kev xaiv tsis zoo. Nov yog qee qhov piv txwv:
- ZIP codes tsis ua cov yuam sij zoo rau lub rooj hauv nroog. Yog tias koj tab tom ua lub rooj saib yooj yim ntawm lub nroog, ZIP code zoo li yog qhov tseem ceeb ntawm kev xav. Txawm li cas los xij, raws li kev tshawb nrhiav ntxiv, koj yuav paub tias ntau dua ib lub nroog sib koom ZIP code. Piv txwv li, New Jersey lub nroog ntawm Neptune, Neptune City, Tinton Falls, thiab Phab Ntsa Lub Zos txhua tus sib koom 07753 ZIP code.
- Tus lej Social Security tsis ua tus yuam sij zoo rau ntau yam. Cov neeg feem coob xav txog lawv tus SSN ntiag tug thiab tsis xav kom nws pom meej rau cov neeg siv database. Tsis tas li ntawd, qee tus neeg tsis muaj SSNs.
- Email chaw nyob kuj yog qhov kev xaiv tsis zoo rau tus yuam sij tseem ceeb. Txawm hais tias lawv txawv, lawv tuaj yeem hloov pauv raws sijhawm. Tsis tas li ntawd, tsis yog txhua tus muaj email chaw nyob.
Yuav ua li cas thiaj ua tau qhov tseem ceeb zoo
Yog li, koj xaiv tus yuam sij tseem ceeb li cas? Feem ntau, tig mus rau koj qhov system database rau kev txhawb nqa.
Ib qho kev coj ua zoo tshaj plaws hauv kev tsim cov ntaub ntawv yog siv tus yuam sij tsim tawm sab hauv. Koj qhov kev tswj hwm database ib txwm tuaj yeem tsim kom muaj tus cim tshwj xeeb uas tsis muaj lub ntsiab lus sab nraud ntawm qhov system database.
Piv txwv li, koj tuaj yeem siv Microsoft Access AutoNumber cov ntaub ntawv los tsim ib daim teb hu ua RecordID. Cov hom ntaub ntawv AutoNumber tau nce qhov chaw txhua zaus koj tsim cov ntaub ntawv. Thaum tus lej nws tus kheej tsis muaj qab hau, nws muab txoj hauv kev txhim khu kev qha los siv cov ntaub ntawv tus kheej hauv cov lus nug.
Ib tus yuam sij zoo feem ntau yog luv luv, siv cov lej, thiab zam cov cim tshwj xeeb lossis sib xyaw ntawm cov tsiaj ntawv loj thiab tus lej me kom yooj yim nrhiav cov ntaub ntawv nrawm thiab sib piv.
