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e Xtensible Markup Language

eXtensible Markup Language

The Extensible Markup Language (XML) is a W3C-recommended general-purpose markup language for creating special-purpose markup languages, capable of describing many different kinds of data. In other words XML is a way of describing data and an XML file can contain the data too, as in a database. It is a simplified subset of Standard Generalized Markup Language (SGML). Its primary purpose is to facilitate the sharing of data across different systems, particularly systems connected via the Internet. Languages based on XML (for example, Geography Markup Language (GML), RDF/XML, RSS, Atom, MathML, XHTML, SVG, and MusicXML) are defined in a formal way, allowing programs to modify and validate documents in these languages without prior knowledge of their form.

Type Of Parser

SAX : XML을 μ½μ–΄κ°€λ©΄μ„œ λ°œμƒν•˜λŠ” μ΄λ²€νŠΈμ— κΈ°λ°˜ν•œ νŒŒμ„œ. λ©”λͺ¨λ¦¬μ˜ μ‚¬μš©λŸ‰μ΄ 적닀.
DOM : XML μ „μ²΄λΌ μ½μ–΄λ“€μ—¬ νŒŒμ‹±. 전체 λ°μ΄ν„°λΌ νŒŒμ‹± traversal ν•˜κΈ° νŽΈν•˜λ‹€.

Related

XSLT : XMLκ³Ό λ—„ 수 μ—†λŠ” 관계인 XSLT
XMLStudy_2002 : μ΄λŸ°μžλ£Œλ„ μžˆμ—ˆκ΅°μš”.
XML/PHP
XML/Csharp

thread

  • XML은 μ •λ§λ‘œ ꡉμž₯히 κ°•λ ₯ν•˜λ‹€. 덕뢄에 톰캣을 μœ„μ‹œν•œ λ§Žμ€ μ• ν”Œλ¦¬μΌ€μ΄μ…˜μ΄ μ…‹μ—… 파일둜 XML을 ν™œμš©ν•˜κΈ° μ‹œμž‘ν–ˆλ‹€. BUT ν¬λ¦¬ν‹°μ»¬ν•œ 뢀뢄에 XML을 μ†Œν†΅ λ°μ΄ν„°λ‘œ μ΄μš©ν•˜κ²Œ 될 경우 ν•΄λ‹Ή 뢀뢄이 κ·Έ ν”„λ‘œκ·Έλž¨μ˜ performance critical path κ°€ λ˜λŠ” κ²½μš°κ°€ λ°œμƒν•œλ‹€.
  • XML은 데이터 ν‘œν˜„ 방식(data presentation)이기 λ•Œλ¬Έμ— 문법에 ν•˜λ‚˜λΌλ„ μ–΄κΈ‹λ‚˜κ±°λ‚˜ μ½”λ“œμ…‹μ΄ λ§žμ§€ μ•ŠλŠ” κ²½μš°μ—λŠ” 100% μ—λŸ¬λΌ λ‚΄λ±‰λŠ”λ‹€. HTML을 닀루닀가 XML을 곡뢀할 경우 이런 점에 λ‹Ήν™©μŠ€λŸ½κΈ°λ„ν•¨. (DB μ—μ„œ μ½”λ“œμ…‹ 잘λͺ» 닀루면 μ‚½μ§ˆν•˜λŠ” κ±°λž‘ λΉ„μŠ·ν•¨;; -_-)
  • 졜근의 λ§Žμ€ Syndication 포맷이 XML에 κΈ°λ°˜μ„ 두고 μžˆλ‹€. (RSS, ATOM, OPML, Attention, Userlist etc) - eternalbleu
  • DTD λŠ” λ­˜κΉŒμš”? μ œκ°€ DOM을 ν—›κ°ˆλ¦°κ²Œ μ•„λ‹ˆλΌ DTDμ—μ„œ 쒌절 ν–ˆμ—ˆλ”κ΅°μš”;; - 톱아보닀
    • DTD둜 κ²€μƒ‰ν•˜λ‹€ μ—¬κΈ°λ‘œ μ™”λ„μš”γ…‹γ…‹γ…‹ μ˜ˆμ „μ— μ“°μ‹  것 κ°™μ•„μ„œ μ§€κΈˆμ€ μ•„μ‹œλŠ” λ‚΄μš©μ΄κ² μ§€λ§Œ λ‚˜μ€‘μ— λ‹€λ₯Έ 뢄듀이 이 νŽ˜μ΄μ§€λΌ λ³΄μ‹€ 수 μžˆμœΌλ‹ˆ μ‹œκ°„μ„ κ±΄λ„ˆλ›°μ–΄ λŒ“κΈ€ λ‹΅λ‹ˆλ‹€~ DTDλŠ” Document Type Definition의 μ•½μžλ‘œ XML λ¬Έμ„œ μž‘μ„±μ„ μœ„ν•œ κ·œμΉ™μ„ κΈ°μˆ ν•˜λŠ” ν˜•μ‹μž…λ‹ˆλ‹€. valid XML Document의 경우 well-formed XML Documentμ΄λ©΄μ„œ XMLμ—μ„œ μ‚¬μš©λ˜λŠ” μ›μ†Œ 이름이 ν•΄λ‹Ή λ¬Έμ„œμ— λŒ€ν•œ XML DTDλ‚˜ XML Schema에 λͺ…μ„Έλœ ꡬ쑰와 ν•©μΉ˜λ˜μ–΄μ•Ό ν•œλ‹€κ³  ν•˜λ„μš”. 이 λ‚΄μš©μ— λŒ€ν•œ μˆ˜μ—…μ„ λ“€μœΌλ©° μ”λ‹ˆλ‹€γ…‹γ…‹γ…‹γ…‹γ…‹γ…‹γ…‹ - κΉ€μˆ˜κ²½
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