Schematron is a language and toolkit for making assertions about patterns found in XML documents. It can be used as a validation language and for automatically generating external annotation. Because it uses paths rather than grammars, it can be used to assert constraints that cannot be expressed using XML Schemas. 


More information: Schematron website

Context for Schematron

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The Savvy Manager's Guide

is also the author of a book that explains Web Services, service-oriented architecture, and Cloud Computing in an easy-to-understand, non-technical manner.

Web Services, Service-Oriented Architectures, and Cloud Computing: The Savvy Manager's Guide

by with David Dick

This is a guide for the savvy manager who wants to capitalize on the wave of change that is occurring with Web Services, service-oriented architecture, and—more recently—Cloud Computing. The changes wrought by these technologies will require both a basic grasp of the technologies and an effective way to deal with how these changes will affect the people who build and use the systems in our organizations. This book covers both issues. Managers at all levels of all organizations must be aware of both the changes that we are now seeing and ways to deal with issues created by those changes.