XML

eXtensible Markup Lus

XML yog lub ntsiab lus rau eXtensible Markup Lus.

Yuav ua li cas yog eXtensible Markup Lus?

Ib hom lus cim tau yooj yim uas siv rau kev teeb tsa thiab thauj cov ntaub ntawv. Nws plays lub luag haujlwm tseem ceeb hauv kev sib qhia cov ntaub ntawv hla ntau lub tshuab. Ntawm no yog ib qho piv txwv ntawm nws cov nta thiab kev siv:

  1. Kev tsim cov ntaub ntawv thiab Hloov: XML feem ntau yog siv los encode cov ntaub ntawv thiab cov ntaub ntawv nyob rau hauv tib neeg-readable thiab tshuab-readable hom. Qhov no ua rau nws zoo tagnrho rau cov ntaub ntawv nyuaj thiab hloov cov ntaub ntawv ntawm cov tshuab sib txawv lossis cov platforms.
  2. Customizable Tags: Tsis zoo li HTML, uas siv cov cim npe ua ntej, XML tso cai rau kev tsim cov cim npe. Qhov kev hloov pauv no ua rau nws sawv cev rau ntau yam ntawm cov ntaub ntawv tsim kho raws li cov kev xav tau tshwj xeeb ntawm kev lag luam lossis daim ntawv thov.
  3. Cov Ntaub Ntawv Sib Pauv: Hauv kev muag khoom thiab kev lag luam, XML feem ntau siv los pauv cov ntaub ntawv ntawm cov tshuab sib txawv, xws li CRM (Kev Tswj Xyuas Cov Neeg Siv Khoom), cov cuab yeej ua lag luam automation, thiab cov ntaub ntawv sab nraud. Qhov no pab txhawb kev sib koom ua ke thiab sib sau ua ke ntawm cov ntaub ntawv los ntawm ntau qhov chaw.
  4. Web Services thiab APIs: XML yog ib qho tseem ceeb hauv ntau lub vev xaib kev pabcuam thiab API (Application Programming Interfaces). Nws yog siv rau kev xa cov lus thov thiab tau txais cov lus teb hauv cov qauv qauv, uas yog qhov tseem ceeb rau kev cuam tshuam nrog cov software sib txawv.
  5. Hla Platform Compatibility: Ib qho ntawm qhov muaj zog ntawm XML yog nws lub platform-kev ywj pheej xwm txheej, txhais tau tias nws tuaj yeem siv thoob plaws ntau yam kev khiav haujlwm thiab kev siv, kom ntseeg tau tias muaj kev sib raug zoo thiab hloov pauv cov ntaub ntawv.
  6. Txhawb rau Internationalization: XML txhawb Unicode, tso cai rau nws los sawv cev cov ntaub ntawv ua ntau hom lus. Qhov no yog qhov tseem ceeb rau cov lag luam ua lag luam hauv kev lag luam thoob ntiaj teb, qhov uas tuav cov ntaub ntawv sib txawv yog feem ntau tsim nyog.
  7. Standardization thiab Regulation: XML yog tus qauv tswj hwm los ntawm W3C (World Wide Web Consortium), ua kom nws ruaj khov thiab kev lees txais dav. Cov qauv no yog qhov tseem ceeb rau cov lag luam vim nws ua kom ntseeg tau tias lawv cov kev sib pauv ntaub ntawv tau lees paub thoob ntiaj teb thiab sib haum nrog lwm lub tshuab.

XML Example

Muaj tseeb! Nov yog ib qho piv txwv yooj yim ntawm daim ntawv XML:

<Customer>
    <Name>John Doe</Name>
    <Email>johndoe@example.com</Email>
    <Orders>
        <Order>
            <OrderID>12345</OrderID>
            <Product>Smartphone</Product>
            <Quantity>1</Quantity>
            <Price>500</Price>
        </Order>
        <Order>
            <OrderID>12346</OrderID>
            <Product>Headphones</Product>
            <Quantity>2</Quantity>
            <Price>150</Price>
        </Order>
    </Orders>
</Customer>

Kev piav qhia ntawm XML Document:

  1. Lub hauv paus ntsiab lus: Lub <Customer> tag yog lub hauv paus ntsiab lus. Nws encapsulates tag nrho cov ntaub ntawv XML cov ntaub ntawv ntsig txog ib tus neeg siv khoom.
  2. Cov ntsiab lus me me: Nyob rau hauv lub hauv paus ntsiab lus yog cov me nyuam cov ntsiab lus, txhua tus sawv cev rau ib daim ntaub ntawv. Piv txwv li, <Name> thiab <Email> tag muab tus neeg siv khoom lub npe thiab email chaw nyob.
  3. Nested Elements: Lub <Orders> element yog siv los pab pawg ntau yam <Order> cov ntsiab lus, txhua tus sawv cev ib tus neeg txiav txim los ntawm tus neeg siv khoom. Qhov no qhia tau hais tias XML tuaj yeem sawv cev cov ntaub ntawv nyuaj los ntawm kev ua zes.
  4. Cov ntsiab lus thiab cov ntaub ntawv: Txhua <Order> element muaj cov menyuam yaus ntxiv xws li <OrderID>, <Product>, <Quantity>, Thiab <Price>, txhua tus tuav cov ntaub ntawv tshwj xeeb rau qhov kev txiav txim ntawd.
  5. Tus kheej piav txog Xwm: XML yog tus kheej piav qhia, txhais tau tias cov cim npe lawv tus kheej piav qhia qhov xwm txheej ntawm cov ntaub ntawv uas lawv muaj. Piv txwv li, <Product> qhia meej tias nws cov ntsiab lus yog lub npe ntawm cov khoom.
  6. Flexibility thiab Extensibility: Yog xav tau, cov ntaub ntawv ntxiv tuaj yeem yooj yim ntxiv. Piv txwv li, a <Date> cov khoom tuaj yeem raug ntxiv rau txhua qhov kev txiav txim kom qhia txog hnub ntawm kev yuav khoom.

Cov qauv XML no muaj txiaj ntsig tshwj xeeb hauv kev muag khoom thiab kev lag luam rau kev tswj hwm thiab sib koom cov ntaub ntawv ntawm cov neeg siv khoom, cov ntsiab lus txiav txim, thiab cov ntaub ntawv khoom lag luam thoob plaws ntau lub tshuab. Cov qauv ntshiab, hierarchical ua rau nws yooj yim rau kev nyeem thiab ua ob qho tib si rau tib neeg thiab tshuab.

XML yog lub cuab yeej tseem ceeb hauv kev muag khoom thiab kev lag luam rau kev tsim cov ntaub ntawv, kev sib pauv, thiab kev sib koom ua ke, ua kom yooj yim rau kev sib txuas lus ntawm ntau lub tshuab thiab lub platform.

  • Cov tsiaj ntawv luv: XML
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