XML 101: Lesson 8: Namespaces

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XML 101 Lesson 8: Namespaces From Jennifer Kyrnin, your Guide to Web Design / HTML Namespaces are critical components in XML design; however, they tend to be a bit conceptual. Think of a namespace as a last name for elements. Last names are what individualize a person. Without them it would be difficult to distinguish one Mary from the next. This is true for namespaces, as well. As you progress down the path of XML education, you will find namespaces at every turn. Click on the Link Below to See the Class Online Lesson 8: Namespaces Things You Need: Text Editor A basic text editor like Notepad for Windows or TextEdit for Macintosh. Learn XML Namespaces - A Closer Look Namespaces are a significant part of XML. Although the idea seems complicated, they are actually straightforward. This article provides definitions and sample code that shows the role that a namespace plays in XML construction. URI - Uniform Resource Identifier This article gives you a better understanding of one namespace component, the URI, or uniform resource identifier. A URI provides a web address that the processor can refer to in regards to namespaces. Without a URI, the namespace has little meaning. You find the URI throughout XML coding. It is as vital as the namespace itself. How to Write Your First XML Schema This is a repeat, but it will give you a chance to see the namespace in action. Schema is one way to bring rules to a browser that helps validate XML code. Without the namespace, a schema does not work. A second look at this tutorial will help you put the pieces of the namespace together. Homework Homework for Lesson 8 Continue practicing writing XML code. Create an XML file for your CD collection and favorite music then write a schema for the file once complete. Practice using namespaces and double check your syntax against the sample code in the tutorials. If you would like help with the homework, or want to discuss the class, you can do so in the HTML / XML Forum. Administrativa Get Lessons Ahead of Time This is a self-paced class. This means that if you need more time than a week to study the lessons, that is fine. And if you finish the lessons before the next lesson is mailed to you, you may request it early. This email is written by: Jennifer Kyrnin Web Design / HTML Guide Email Me | My Blog | My Forum   Missing a lesson? Click here. About U. is our collection of free online courses designed to help you learn a new skill, solve a problem, get something done, or just learn more about your world. Sign up now, and we will email you lessons on a daily or weekly basis. You are receiving this email because you subscribed to the About.com 'XML 101' email. If you wish to unsubscribe, please click here. About respects your privacy: Our Privacy Policy Contact Information: 249 West 17th Street New York, NY, 10011 © 2010 About.com   Advertisement