[rescue] XML Schema reversing

[David Muran-de Assereto]

Not exactly a rescue issue, but you guys are smart and of widely  
varied experience:

I am in a situation where I need to reliable reverse a 29k line XML  
schema, in three parts, back into human readable English. The schema  
is generated from a list of database fields, data types, database  
field lengths, and a length constraint on each field. Although I can  
go back to the source database for the information, the situation is  
such that I need to be able to reliably assert that the schema is, in  
fact, an accurate representation of the field names, types, and  
allowable lengths.

I have googled, and although I have found a lot of information on  
validating XML documents, I have found little information on doing  
what I need to do. The only examples I can find of doing this are

1) Microsoft-centric
2) Involve comparing the schema with the database, which I cannot do.

What I need to do specifically, is to parse the schema and produce a  
tabular output containing the field name, data type, and maximum  
allowable length.
The actual schema(s/e) are in three parts: The first file is a list  
of user-defined data types. The second file is a description of the  
database. The third part contains a subset of the database  
description, with only those elements which have data length  
constraints which vary from the database.

Any pointers?

Dave