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“4137X˙CH03˙Akerkar” — 2007/9/8 — 10:42 — page 88 — #18
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88 CHAPTER 3 Semantic Web
As Armstrong and colleagues (2002) point out, while XML enables document portability,
it cannot do the job in a vacuum. Two applications that are communicating with each other
must agree on a variety of issues, such as
• using XML for communication
• setting elements in the XML documents and their semantics
• Web services methods
• the function of the methods
• if and when more than one method is needed, the order in which they are invoked.
3.4.1.3 An Illustration of XML Communication
In XML and SQL: Developing Web Applications (2001), Appelquist provides strong