Video: DTD piv txwv yog dab tsi?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
A DTD txhais cov cim npe thiab cov cwj pwm siv hauv ib daim ntawv XML lossis HTML. Txhua yam uas tau teev tseg hauv a DTD tuaj yeem siv rau hauv cov ntaub ntawv no, nrog rau cov cim npe ua ntej thiab cov cwj pwm uas yog ib feem ntawm txhua hom lus. Cov nram qab no yog piv txwv ntawm a DTD siv los txhais lub tsheb: <!
Kev sib raug zoo, DTD txhais li cas?
Ib hom ntawv txhais ( DTD ) yog ib tug setof markup declarations uas txhais ib hom ntaub ntawv rau aSGML-tsev neeg cov lus cim (GML, SGML, XML, HTML). Nws txhais cov qauv ntaub ntawv nrog cov npe ntawm cov khoom siv tau thiab cov khoom siv. A DTD tuaj yeem tshaj tawm hauv kab hauv XMLdocument, lossis raws li kev siv sab nraud.
Tsis tas li, kuv yuav qhib DTD cov ntaub ntawv li cas? Tsim ib DTD thiab txuas mus rau XMLdocument Xaiv cov ntawv nyeem Cov ntaub ntawv hom, thiab ces nias Qhib . Txuag tus ntaub ntawv raws li Product. dtd ua hauv tib folder li koj daim ntawv XML. Rov qhib Product.xml hauv Visual Studio2005 lossis hauv Visual Studio. NET; ua qhov no, taw tes rau Qhib nws Cov ntaub ntawv menu, thiab ces nias Cov ntaub ntawv.
Raws li, DTD yog dab tsi thiab nws lub hom phiaj?
Taw qhia rau DTD Lub hom phiaj ntawm ib DTD yog txhais tus tsim kev cai lij choj ntawm ib daim ntawv XML. Nws txhais tus cov ntaub ntawv qauv nrog a daim ntawv teev kev cai lij choj. Ib DTD tuaj yeem tshaj tawm hauv kab hauv koj daim ntawv XML, lossis ua lwm yam siv.
External DTD yog dab tsi?
Ib External DTD yog ib qho uas nyob hauv ib daim ntawv sib cais. Yuav siv lub External DTD , koj yuav tsum txuas mus rau nws los ntawm koj cov ntaub ntawv XML los ntawm kev muab URI ntawm cov DTD file. This URI feem ntau yog nyob rau hauv daim ntawv ntawm URL.
Pom zoo:
Internal DTD thiab External DTD yog dab tsi?
Ib DTD raug xa mus rau hauv DTD ifelements tau tshaj tawm hauv cov ntaub ntawv XML. Txhawm rau siv nws asinternal DTD, standalone attribute hauv XML tshaj tawm yuav tsum tau teem rau yog. Qhov no txhais tau hais tias cov lus tshaj tawm ua haujlwm ywj pheej ntawm qhov chaw sab nraud
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