The file structure of this package mimics the structure at which the related assets are available on the DoD Metadata Registry, this is to facilitate usage of the schemas for online validation as well as local validation.  

For online validation point your validator to: <MDR>/mdr/ns/DDMS/3.0/DDMS-3_0.xsd.  

For local validation point your validator to: ./ns/DDMS/3.0/DDMS-3_0.xsd.


