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XML/database课件
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2008-12-21
16:29:00
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有关xml/database的课件 XML documents can have Schema (the definition of the structure) How to define the Documents’ schema DTD (in W3C XML 1.0) XML Schema (W3C) RELAX NG (OASIS, Organization for the Advancement of Structured Information Standards ) Schematron (ISO
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XML and XML
Databases
Liu HongXing
2008-12
Agenda
1. XML
What’s XML
XML’s Schema: DTD/XML Schema
Query: Xpath, XQuery, SQL/XML
2. XML Database
What’s XML Database
XML-Enabled DB, Native XML DB
What is XML?
(eXtensible Markup Language)
A tag-based meta language
Designed for structured document representation
Represents data hierarchically (in a tree)
Provides context to data (makes it meaningful)
Self-describing data
Separates presentation (HTML) from data (XML)
An open W3C standard
A subset of SGML
Platform-independent ( 与平台无关 ) :
XML-Data /Java-Program
Facts About XML
Every database vendor has an XML page:
www.oracle.com/xml
www.microsoft.com/xml
www.ibm.com/xml
But, most importantly, XML enables data
sharing on the Web – hence our interest
What is XML?
XML is a “use everywhere” data specification
Documents
Configuration
Database
Application X
Repository
XML XML
XML XML
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