At the end of this section, you will also learn how to use an XML Schema definition to validate a document that contains elements from multiple namespaces.To be notified of validation errors in an XML document, the following must be true: It is helpful to start by defining the constants you will use when configuring the factory.
declaration consists of entry pairs, where the first entry in each pair is a fully qualified URI that specifies the namespace, and the second entry contains a full path or a relative path to the schema definition. In that way, only one copy of the schema will tend to exist.
Note that you cannot use the namespace prefixes when defining the schema locations.
The Internet Explorer does try to validate XML documents as it loads them, checking them against the syntax you've specified; but you won't see any validation errors unless you check the Here's an example where I'll purposely introduce an error into our sample XML document, 22-01
This section looks at the process of XML Schema validation.
As mentioned in the beginning of this chapter, you can specify the syntax of an XML document yourself.