This schema references to main MCDB and CEDAR main HepML schemes and permits to use all the elements from different namespaces without explicit redeclaration. Here it is used slightly modified CEDAR schema to work fine in this approach (see the Proposal)

Shema itself is located on MCDB main server http://mcdb.cern.ch/hepml/schemes/hepml.xsd

Full schema structure and reference is available here

Graphical structure view