XML Schema Complete Reference, The

16.2. The PSVI

The various kinds of infoset classes defined in the Infoset Recommendation are specific classes providing specific properties. If you consider additional properties, what you have is no longer that infoset but something else. In the case of schema processing, what we have is just that: properties added to the infoset classes and new classes added. The result is the PSVI (the “post-schema-validation infoset”). In this book, the infoset structure defined in the Infoset Recommendation is called the “basic infoset.”

A qualitative difference exists between the PSVI and the basic infoset. Specifically, the basic infoset contains almost no information about the results of validation against a DTD other than attribute values that are ...