Vim rau qhov kev loj hlob ntawm technology, lub ntiaj teb no yog tam sim no lub sij hawm ua kom paub kev ua hauj lwm ntawm loj cov koom haum tsis muaj tus database yog heev yooj yim. Feem ntau cov yuav, tsis yog txhua txhua paub hais tias muaj kev sib txawv heev hom ntawm databases. Thiab tag nrho lawv muaj lawv zoo thiab disadvantages.
Yuav ua li cas yog cov xaab siab database
Lawv twb xub siv rau computers yog ib tug twb tau ntev heev lub sij hawm. Oddly txaus, txawm tag nrho cov "antiquity" ntawm cov hauv paus, lawv tseem nrov nyob rau hauv ib co tuam txhab uas muag. Lawv sawv cev rau ib tug pyramid. Tag nrho cov teb thiab cov ntaub ntawv txuam, grouped ua ke nrog txhua lwm yam. Nyob rau hauv xws li ib tug pyramid yuav siv tau raws li cov ntaubntawv povthawj siv ntawm ntau dua thiab theem sab. Txhua nkag nyob rau hauv kev ua raws cai nrog ib tug zoo cov saw uas hais kom ua uas nws tiav thiab tswj ntawm database tswj systems. Qhov no kev tsim kho, uas muaj ib tug hierarchical database, zoo nkaus li tsis yog li ntawd nyuaj, koj tsuas muaj mus kos ib analogy nrog tsev neeg tsob ntoo. Qhov kom zoo dua ntawm nws yog tias nws yog heev yooj yim mus txawj tej yam ntxiv. Nyob rau hauv tas li ntawd, cov neeg ua hauj lwm tej zaum yuav muaj kev nkag tau mus rau lub xaab siab hauv paus yog heev yooj yim. Lub downside yog qhov tseeb hais tias mus nrhiav kom tau ntau tshaj ib tug kev twb kev txuas ntawm lub "xeeb leej xeeb ntxwv" thiab "niam txiv" yog yuav luag tsis yooj yim sua.
Qhov zoo ntawm network databases
Network hom databases yog heev uas zoo sib xws rau cov saum toj no. Lub ntsiab sib txawv yog cov qauv uas muaj hauv daim ntawv ntawm ib yam ntawm cov web. Tsis tas li ntawd, tsis zoo li cov xaab siab database, cov ntaub ntawv tej zaum yuav tsum tau muab khi rau ntau tshaj ib tug "niam txiv" los yog tus tswv. Ib yam li nyob rau hauv lub saum toj no hom, network databases yog siv mas nyob rau hauv lub ntsiab computers, lub npe hu ua servers. Network database muaj ntau saj zawg zog. Tab sis nws yog tsim nyog los paub hais tias cov xov tooj ntawm kev mus lawv muaj cov kev txwv.
Lub koob meej ntawm paub databases
Paub hom ntawm databases yog cov feem ntau saj zawg zog ntawm tag nrho cov bases. Tag nrho cov ntaub ntawv uas yog cia nyob rau hauv lub rooj, txhua tus uas nws muaj nws teb-qhov tseem ceeb. Nrog xws li ib tug tseem ceeb, qhia kom paub yog yooj yim zog tej ntaub ntawv. Nyob rau hauv tas li ntawd, nws yog kiag li cim rau tag nrho lub rooj. Ntxhuav sib thooj nrog lub teev qhov tseem ceeb. Piv txwv li, ib tug muaj ib tug tseem ceeb teb "Khoom Code" thiab "neeg muag khoom Code" thiab lwm yam - lub teb lub lag luam "code neeg muag khoom" thiab "tsim kom muaj code". Nruab nrab ntawm lawv lawv yuav tsum tau ua txhua yam los ntawm lub teb "seller code." Tej bases muaj tau chaw vim nws simplicity thiab yooj yim thaum overriding cov ntaub ntawv. Lub disadvantage yog ntau lub sij hawm-siv nrhiav cov ntaub ntawv koj xav tau.
Pheej yav tom ntej nrog tus kwv-taw qhia kom paub databases
Nruas-taw qhia kom paub database hom muab cov neeg uas muaj peev xwm ntxiv tshiab hom ntawm cov ntaub ntawv teb, raws li tau zoo raws li qhov sib ntxiv ntawm lub suab, video thiab cov ntaub ntawv duab nyob rau hauv lub rooj qauv. Piv rau tus yav dhau los databases, kwv-taw qhia kom paub databases muaj ntau yam zoo. Nyob rau hauv tas li ntawd, tuav yog yooj yim npaum li nyob rau hauv lub saum toj no tus neeg mob. Yam khoom uas muaj xws li ib hom ntawm bases, lub tsev ntawm ob ntsiab ntawm cov ntaub ntawv thiab ntawm cov lus qhia, uas pab txiav txim seb lub hom ntawm cov ntaub ntawv ua. Ntawm cov shortcomings yuav qhia thiab cov nqi ntawm cov kam ntawm tuam txhab uas muag kom tau xws li ib tug database es tsis txhob ntawm cov laus, tau ntev lawm proven.
Tab sis txoj kev loj hlob ntawm ib tug database uas muaj peev xwm ntxiv multimedia khoom yog ua nce nrov. Yog li ntawd, muaj ib tug cog qoob loo uas nyob rau hauv lub nyob ze yav tom ntej, feem ntau cov koom haum tseem tsiv mus nyob rau kwv-taw qhia kom paub databases.