Xml
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XML is a markup language that structures, stores, and transports information. It has basic rules like elements being made up of start and end tags enclosing data. Element names follow rules like not starting with numbers or XML. XML documents form a tree structure with a root element and child elements. XML can include attributes to provide additional information about elements. Web services use XML and SOAP to allow programs written in different languages and platforms to communicate in a standards-based way.
Xml
- 3. Disclaimer: This presentation is prepared by trainees of baabtra as a part of mentoring program. This is not official document of baabtra –Mentoring Partner Baabtra-Mentoring Partner is the mentoring division of baabte System Technologies Pvt . Ltd
- 4. What is XML? XML stands for EXtensible Markup Language. XML is a markup language much like HTML. XML is Not a Replacement for HTML. XML was created to structure, store, and transport information. XML tags are not predefined.
- 5. Basic Rules An XML element is made up of a start tag, an end tag, and data in between. XML tags are case-sensitive. <Month>April</Month> Data Opening and closing tags. <CITY> <City> <city>
- 6. XML Naming Rules Names can contain letters, numbers, and other characters. Names cannot start with a number or punctuation character. Names cannot start with the letters xml (or XML, or Xml, etc). Names cannot contain spaces.
- 7. XML -Declaration <?xml version="1.0" encoding="UTF-8" standalone="no" ?> 1.0 is the current version. The encoding declaration identifies which encoding is used to represent the characters in the document. Use 'no' if the XML document is linked to an external entity references.
- 8. XML Documents Form a Tree Structure • XML documents must contain a root element. This element is "the parent" of all other elements. • All elements can have sub elements (child elements). <root> <child> <subchild>.....</subchild> </child> </root>
- 9. An Example XML Document <Employee> <name>john</name> <from>mumbi</from> <age>23</age> <Job>Designer<job> </Employee> Root element Child elements
- 10. XML Attributes XML elements can have attributes, just like HTML. Attributes provide additional information about an element. Attribute values must always be quoted. <person gender="female"> <firstname>Anna</firstname> <lastname>Smith</lastname> </person>
- 11. XML Elements vs. Attributes <note date="10/01/2008"> <to>Tove</to> <from>Jani</from> <heading>Reminder </heading> <body>Don't forget me this weekend!</body> </note> <note> <date>10/01/2008</date> <to>Tove</to> <from>Jani</from> <heading>Reminder</headi ng> <body>Don't forget me this weekend!</body> </note>
- 12. XML Web Service Web services are application components Web-applications are simply applications that run on the web. By using Web services, your application can publish its function or message to the rest of the world. Web services use XML to code and to decode data, and SOAP to transport it (using open protocols).
- 13. Advantages of the XML Web services It allows programs written in different languages on different platforms to communicate with each other in a standards-based way. XML is a software- and hardware-independent tool for carrying information.
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