This is not the current RELAX Schema for DocBook. Please use RELAX Schema V4.1.2.2 instead.
This version is available as a zip archive.
You can also retrieve the files individually if you prefer:
The DocBook RELAX Schema.
The DocBook RELAX Schema “hierarchy” module.
The DocBook RELAX Schema “information pool” module.
The DocBook RELAX Schema tables module.
A test document.