XRules Tutorial v 0.43

XRules Tutorial Draft Version 0.43, November 7, 2005 Abstract This document is an introduction to XRules along with examples and illustrations of use cases and applications. XRules is an XML rules language that expresses constraints, calculations, interdependencies, and properties that describe and exist among elements and attributes of an XML document. Status of this document This document is a work in progress. Software implementations and test tools of the XRules specification are available for download from www.xrules.org. These implementations are used as a proof of concept and are updated regularly as the XRules specification evolves. If you like to participate in developing XRules or have feedback or questions, please contact the author at waleed_abdulla@xrules.org. All contributions are welcome and credit will be given where credit is due. © 2003-2005 Waleed K. Abdulla. All rights reserved. Your are hereby granted a permission to copy and display this document without fee or royalty, provided that you don’t change this document in any way such as, but not limited to, removing the copyright notice or this paragraph. Except for the copyright license granted above, no other rights are granted by implication, estoppel or otherwise. This document is provided “AS IS”. The author disclaims all warranties, expressed or implied. And, the author will not be liable for any direct, indirect, special, incidental, or ...