All xsd files are located at http://fews.wldelft.nl/schemas/version1.0/pi-schemas/
. The most up to date versions can be found there. See attached pdf for schema documentation
The following schema's are available:
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/Delft_PI.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_branches.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_cells.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_configupdatescript.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_crosssections.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_datacluster.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_dataclusterdefinition.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_diag.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_latinputs.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_locations.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_mapstacks.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_parameters.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_polygons.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_profiles.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_sharedtypes.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_state.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_table.xsd
http://fews.wldelft.nl/schemas/version1.0/pi-schemas/pi_timeseries.xsd