
8 ◾ Vijayan Sugumaran and Jon Atle Gulla
dierent languages used by dierent computers and the URI provides a standard
way to uniformly indentify resources such as Web pages and other forms of con-
tent. e Unicode and URI together enable us to create content and make these
resources available for others to nd and use in a simple way. XML enables us to
structure data using user-dened tags that have well dened meanings that are
shared by applications. is helps improve data interoperability across systems.
Namespaces and schemas provide the mechanisms to express semantics in one
location for access and utilization by many applications. e ...