XML vs HTML
XML stands for EXtensible Markup Language. Nws tau txhais hauv XML 1.0 specification, uas yog tsim los ntawm W3C (World Wide Web Consortium). XML muab ib txoj hauv kev, uas yog ib qho yooj yim, los encode cov ntaub ntawv thiab cov ntawv nyeem xws li cov ntsiab lus tuaj yeem hloov pauv ntawm cov khoom siv tsav tsheb, kev khiav hauj lwm thiab cov ntawv thov uas muaj kev cuam tshuam me ntsis ntawm tib neeg. HyperText Markup Language, dav hu ua HTML kuj yog ib hom lus cim rau cov nplooj ntawv web. HTML yog lub hauv paus tsim thaiv ntawm nplooj ntawv web. Web browser nyeem cov ntaub ntawv HTML thiab muab lawv tso rau hauv cov nplooj ntawv pom lossis pom tau.
XML
XML yog cov lus cim uas siv los hloov cov ntaub ntawv thiab cov ntawv ntawm tus tsav tsheb kho vajtse, kev khiav haujlwm thiab cov ntawv thov uas muaj kev cuam tshuam me ntsis ntawm tib neeg. XML muab cov cim npe, cov yam ntxwv thiab cov qauv tsim uas tuaj yeem siv los muab cov ntaub ntawv ntsiab lus. Cov ntaub ntawv ntsiab lus no tuaj yeem siv los txiav txim siab lub ntsiab lus ntawm cov ntsiab lus. Qhov no ua rau nws muaj peev xwm txhim kho kev tshawb fawb xyaw zoo thiab ua cov ntaub ntawv mining ntawm cov ntaub ntawv. Tsis tas li ntawd, cov ntaub ntawv kev sib raug zoo ib txwm tsim nyog raws li XML cov ntaub ntawv vim tias lawv tuaj yeem teeb tsa hauv kab thiab kab tab sis XML muab kev txhawb nqa tsawg dua rau cov ntaub ntawv nrog cov ntsiab lus nplua nuj xws li suab, video, cov ntaub ntawv nyuaj, thiab lwm yam. XML databases khaws cov ntaub ntawv hauv cov qauv, hierarchical daim ntawv uas tso cai rau cov lus nug kom ua tau zoo dua. XML tag tsis tau txhais ua ntej thiab cov neeg siv tuaj yeem txhais cov cim tshiab thiab cov qauv ntaub ntawv. Tsis tas li ntawd, cov lus tshiab hauv internet xws li RSS, Atom, SOAP, thiab XHTM tau tsim siv XML.
HTML
HTML raws li tau hais dhau los yog hom lus cim uas muaj cov cim cim npe. HTML markup tags, uas feem ntau hu ua HTML tags yog siv los piav txog cov nplooj ntawv web. Cov ntaub ntawv HTML ib txwm muaj cov cim HTML nrog rau cov ntawv dawb uas xav tau rau cov ntsiab lus ntawm nplooj ntawv web. HTML cim npe tuaj yeem txheeb xyuas tau yooj yim hauv daim ntawv HTML vim lawv nyob ib puag ncig los ntawm lub kaum sab xis (xws li). HTML tags feem ntau muab tso rau hauv ib daim ntawv ua khub, qhov twg thawj tag yog qhov pib tag (piv txwv li ) thiab daim ntawv thib ob yog qhov kawg tag (piv txwv li). Lub luag haujlwm ntawm lub vev xaib browser (xws li Internet Explorer, Firefox, thiab lwm yam) yog nyeem cov ntawv HTML thiab tso nws ua nplooj ntawv web. Tus browser siv HTML cim los txhais cov ntsiab lus ntawm nplooj ntawv, tab sis HTML cim npe lawv tus kheej tsis tshwm sim los ntawm browser. Cov nplooj ntawv HTML tuaj yeem kos duab, cov khoom thiab cov ntawv sau ua lus zoo li JavaScript. Tsis tas li ntawd, HTML tuaj yeem siv los tsim cov ntawv sib tham.
Qhov txawv ntawm XML thiab HTML
Txawm tias, XML thiab HTML yog ob hom lus, muaj qee qhov sib txawv ntawm lawv. HTML feem ntau muaj cov cim npe uas txhais cov tsos ntawm cov ntsiab lus, thaum XML tags feem ntau txhais cov qauv thiab cov ntsiab lus ntawm cov ntaub ntawv (thiab qhov tseeb tsos yog txhais los ntawm cov ntawv sib txuam). Qhov thib ob, XML yog txuas ntxiv mus, txij li cov cim XML tuaj yeem raug txhais los ntawm tus neeg siv rau ib daim ntawv thov tshwj xeeb, thaum HTML cim tau txhais los ntawm W3C.
