XML Schema Definition - XSD
XSD has advantages over earlier XML schema languages, such as DTD. Because XSD is written in XML, there is no need for a parser. XSD defines a richer set of data typessuch as booleans, numbers, dates and times, and currencies -- which is invaluable for e-commerce applications. DTDs, on the other hand, express data types as explicit enumerations, which makes validation much more difficult and less accurate.
More important, XSD makes it easier to validate documents based on namespaces (used to qualify element and attributes names by associating them with namespaces identified by URI references. Namespaces prevent identically custom-named tagsthat may be used in different XML documents from being read the same way), something DTDs cannot do.
XSD is defined in the W3C's XML Schema Working Group Working Draft published on May 6, 1999.
Often times technologies start as hype but with time become adopted. As a developer or technologist, it is worth reading the hype and knowing the... Read More »Microsoft Hyper-V Network Virtualization Q&A
The top 5 Hyper-V questions with answers provided by Nirmal Sharma, a MCSEx3, MCITP and Microsoft MVP in Directory Services. Read More »Storage Trends: Solid State and Software Defined
Solid state drives and software defined storage are two leading trends in the rapidly growing storage market. Read More »
This Webopedia guide will show you how to create a desktop shortcut to a website using Firefox, Chrome or Internet Explorer (IE). Read More »Flash Data Storage Vendor Trends
Although it is almost impossible to keep up with the pace of ongoing product releases, here are three recent highlights in the flash data storage... Read More »15 Important Big Data Facts for IT Professionals
Keeping track of big data trends, research and statistics gives IT professionals a solid foundation to plan big data projects. Here are 15... Read More »
Stay up to date on the latest developments in Internet terminology with a free weekly newsletter from Webopedia. Join to subscribe now.
- Watch Datamation's editor James Maguire moderate roundtable discussions with tech experts from companies such as Accenture, Dell, Blue Jeans Network, Microsoft and more »