Thaum koj saib SGML, HTML , thiab XML, koj tuaj yeem xav txog qhov no ib tsev neeg ua pawg. SMGL, HTML thiab XML yog txhua hom lus haiv . Lub sij hawm kos npe tau txais nws cov hauv paus ntawm cov neeg kho tshuab ua kev hloov kho rau cov neeg sau, cov ntawv sau. Tus editor, thaum rov xyuas cov ntsiab lus, yuav 'cim npe, tus ntawv sau rau tej qhov chaw. Hauv computer technology, ib hom lus piav qhia yog cov lus ntawm cov lus thiab cov cim uas muaj cov ntawv nyeem los txhais cov ntawv rau lub vas sab. Piv txwv li, thaum tsim cov nplooj ntawv hauv Internet, koj xav muab cov nplooj ntawv cais thiab muab cov tsiaj ntawv tso rau hauv hom ntsej muag. Qhov no yog ua tiav los ntawm ib hom lus piav qhia. Thaum koj nkag siab txog lub luag haujlwm SGML, HTML thiab XML ua si hauv qhov web page design, koj yuav pom cov kev sib raug zoo no cov lus sib txawv. Cov kev sib raug zoo ntawm SGML, HTML, thiab XML yog tsev neeg daim ntawv cog lus uas pab tsim cov websites ua haujlwm thiab tsim web tsim.
SGML
Hauv no tsev neeg ntawm hom lus piav qhia, Kev Txuas Lus Zauv (SGML) yog niam txiv. SGML muab ib txoj kev los txhais cov cim lus thiab teev cov txheej txheem rau lawv daim ntawv. Raws li hais, SGML hais li cas qee cov lus ua tau lossis ua tsis tau, cov ntsiab lus yuav tsum muaj, xws li cov cim npe, thiab cov qauv ntawm cov lus. Thaum ib tus niam txiv kis tau ntawm qhov muaj tus caj ces rau tus me nyuam, SGML kis tau tus qauv thiab hom kev cai rau cov cim lus.
HTML
HyperText Markup Language (HTML) yog tus me nyuam, lossis daim ntawv thov, ntawm SGML. Nws yog HTML uas feem ntau tsim cov nplooj ntawv rau Internet browser. Siv HTML, koj tuaj yeem embed dluab, tsim phab ntsa, tsim kom muaj nuj nqis thiab tso ncaj ntawm cov nplooj. HTML yog cov lus markup uas tsim daim ntawv thiab cov tsos ntawm cov nplooj ntawv web. Ntxiv thiab, siv HTML, koj tuaj yeem sib ntxiv rau lwm lub luag haujlwm rau ntawm lub website ntawm cov lus scripting, xws li JavaScript. HTML yog lub ntsiab lus siv rau lub website tsim.
XML
Extensible Markup Language (XML) yog ib tug viv ncaus rau HTML thiab ib tug laug ntawm SGML. Txawm hais tias XML yog ib hom lus markup thiab vim li no ntawm tsev neeg, nws muaj kev sib txawv dua li HTML. XML yog lub subset ntawm SGML - muab nws cov cai uas ib daim ntawv thov, xws li HTML, tsis muaj. XML yuav txhais tau cov ntawv ntawm nws tus kheej. Cov Ntaub Ntawv Qhia Txog Kev Pab (RDF) yog ib daim ntawv thov ntawm XML. HTML yog tsim rau cov qauv siv thiab tsis muaj subsets lossis daim ntawv sau npe. XML yog ib qho chaw sib tw, los yog pom teeb meem, version SGML, tsim los ua hauj lwm nrog tsawg bandwidth . XML inherited genetic qualities los ntawm SGML, tab sis yog tsim los ua nws tus kheej tsev neeg. Subsets ntawm XML muaj xws li XSL thiab XSLT.