Web-Sites-Design-and-Programming-8计算机科学与技术---网站设计与编程--双语教学课件.pptVIP

Web Sites Design and Programming Lecturer: Lijie Guo Room: XNA508 Phone: Email: guo_lijie163@163.com XML Overview Basic of XML? XML Syntax Rules XML Encoding、Elements、Attributes XML Validation XML Namespaces XML CDATA Displaying XML XML Family What is XML? XML stands for eXtensible Markup Language XML is a markup language much like HTML XML was designed to describe data XML tags are not predefined. You must define your own tags XML uses a Document Type Definition (DTD) or an XML Schema to describe the data XML with a DTD or XML Schema is designed to be self-descriptive XML is a W3C Recommendation The Main Difference Between XMLand HTML XML was designed to carry data. XML is not a replacement for HTML. XML and HTML were designed with different goals: XML was designed to describe data and to focus on what data is. HTML was designed to display data and to focus on how data looks. HTML is about displaying information, while XML is about describing information. XML Does not DO Anything Maybe it is a little hard to understand, but XML does not DO anything. XML was created to structure, store and to send information. note toTove/to fromJani/from headingReminder/heading bodyDont forget me this weekend!/body /note Someone must write a piece of software to send, receive or display it. XML in Future Web Development XML is Free and Extensible XML tags are not predefined. You must invent your own tags. XML is a Complement to HTML XML is a cross-platform, software and hardware independent tool for transmitting information XML is going to be everywhere. How can XML be Used? It is important to understand that XML was designed to store, carry, and exchange data. XML was not designed to display data. XML can Separate Data from HTML XML is Used to Exchange Data XML and B2B XML Can be Used to Share Data XML Can be Used to Store Data XML Can Make your Data More Useful XML Can be Used to