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XML
- 1.
- 2. What is XML •XMLstands for EXtensible Markup Language •XML was designed to carry data, not to display data • XML developed by the World Wide Web Consortium (www.W3C.org) • • XML like HTML is a mark up language, but unlike HTML it doesn’t have predefined elements
- 3. XML Versions There aretwo current versions of XML: v version XML 1.0 was initially defined in 1998 vversion XML 1.1 was initially published on 4th Feb 2004
- 4. Example language ofxml structure q XHTML q WML AND WAP q SVG
- 5. Uses XML ü WEBDEVELOPER ü TRANSPORTING AND SHARING DATA ü STORING DATA ü DOCUMENTATION ü ANDROID DEVELOPER
- 6. XML Doc Advantages qEasy data sharing, text documents are readable between any device. q Easy to learn. q Extendable. q Freedom to define tags. q Easy searching. q
- 7. Disadvantages of XML qTheredundancy may affect application efficiency through higher storage, transmission and processing costs.
- 8. XML Document Components Thevarious components of an XML document used for representing data in a hierarchical order are: q Processing Instruction (PI) q Tags q Elements q Content q Attributes q Entities q Comments
- 9. XML Document Components(Contd.) <?xml version=“1.0” encoding=“UTF-8”?> <STOREDATA> <!--STOREDATA is the root element--> <STORE STOREID=“S101”> <PRODUCTNAME>Toys</PRODUCTNAME> <QUANTITY>100</QUANTITY> <DISPLAY>The price of this toy is < 200 </DISPLAY> </STORE> </STOREDATA> Processing Instruction (PI) Provides information on how the XML file should be processed.
- 10. XML Document ComponentsContd… <?xml version=“1.0” encoding=“UTF- 8”?> <STOREDATA> <!--STOREDATA is the root element--> <STORE STOREID=“S101”> <PRODUCTNAME>Toys</PRODUCTNAME> <QUANTITY>100</QUANTITY> <DISPLAY>The price of this toy is < 200 </DISPLAY> </STORE> </STOREDATA> Root Element Contains all other elements in the document.
- 11. XML Document ComponentsContd… <?xml version=“1.0” encoding=“UTF-8”? > <STOREDATA> <!--STOREDATA is the root element--> <STORE STOREID=“S101”> <PRODUCTNAME>Toys</PRODUCTNAME> <QUANTITY>100</QUANTITY> <DISPLAY>The price of this toy is < 200 </DISPLAY> </STORE> </STOREDATA> Tags Is a means of identifying data. Tags consist of start tag and end tag.
- 12. XML Document ComponentsContd… <?xml version=“1.0” encoding=“UTF-8”?> <STOREDATA> <!--STOREDATA is the root element--> <STORE STOREID=“S101”> <PRODUCTNAME>Toys</PRODUCTNAME> <QUANTITY>100</QUANTITY> <DISPLAY>The price of this toy is < 200 </DISPLAY> </STORE> </STOREDATA> Comments Are statements used to explain the XML code.
- 13. XML Document ComponentsContd… <?xml version=“1.0” encoding=“UTF-8”?> <STOREDATA> <!--STOREDATA is the root element--> <STORE STOREID=“S101”> <PRODUCTNAME>Toys</PRODUCTNAME> <QUANTITY>100</QUANTITY> <DISPLAY>The price of this toy is < 200 </DISPLAY> </STORE> </STOREDATA> Child Elements Are the basic units used to identify and describe data in XML.
- 14. XML Document ComponentsContd… <?xml version=“1.0” encoding=“UTF-8”?> <STOREDATA> <!--STOREDATA is the root element--> <STORE STOREID=“S101”> <PRODUCTNAME>Toys</PRODUCTNAME> <QUANTITY>100</QUANTITY> <DISPLAY>The price of this toy is < 200 </DISPLAY> </STORE> </STOREDATA> subChild Elements .
- 15. XML Document ComponentsContd… <?xml version=“1.0” encoding=“UTF- 8”?> <STOREDATA> <!--STOREDATA is the root element--> <STORE STOREID=“S101”> <PRODUCTNAME>Toys</PRODUCTNAME> <QUANTITY>100</QUANTITY> <DISPLAY>The price of this toy is < 200 </DISPLAY> </STORE> </STOREDATA> Attributes Provide additional information about the elements for which they are declared.
- 16. XML Document ComponentsContd… <?xml version=“1.0” encoding=“UTF-8”?> <STOREDATA> <!--STOREDATA is the root element--> <STORE STOREID=“S101”> <PRODUCTNAME>Toys</PRODUCTNAME> <QUANTITY>100</QUANTITY> <DISPLAY>The price of this toy is < 200 </DISPLAY> </STORE> </STOREDATA> Content (name of sub children) Refers to the information represented by the elements of an XML document. An element can contain: • Character or data content • Element content • Combination or mixed content
- 17. XML Editors qXML Spy qEditiX qMicrosoftXML Notepad qVisual XML qXML Viewer qXeena qXML Styler, Morphon, XML Writer…
- 18. XML vs. HTML qXML is not a replacement for HTM q XML was designed to carry data q XML and HTML were designed with different goals q XML was designed to describe data and to focus on what data is q html was designed to display data and to focus on how data looks.
- 19. q HTML isabout displaying information, while XML is about describing information q Tags in html specific, but in xml can change to any name
- 20.
Editor's Notes
- #10 Tell the students that the key words that they were told to note while discussing the definition of system forensics, will be elaborated as part of the system forensics process.
- #11 Tell the students that the key words that they were told to note while discussing the definition of system forensics, will be elaborated as part of the system forensics process.
- #12 Tell the students that the key words that they were told to note while discussing the definition of system forensics, will be elaborated as part of the system forensics process.
- #13 Tell the students that the key words that they were told to note while discussing the definition of system forensics, will be elaborated as part of the system forensics process.
- #14 Tell the students that the key words that they were told to note while discussing the definition of system forensics, will be elaborated as part of the system forensics process.
- #15 Tell the students that the key words that they were told to note while discussing the definition of system forensics, will be elaborated as part of the system forensics process.
- #16 Tell the students that the key words that they were told to note while discussing the definition of system forensics, will be elaborated as part of the system forensics process.
- #17 Tell the students that the key words that they were told to note while discussing the definition of system forensics, will be elaborated as part of the system forensics process.