Authoritative fgdc-std-001-1998 (FGDC CSDGM) schema (XSD) and data definition document (DTD) URLs

Following are authoritative FGDC Content Standard for Digital Geospatial Metadata (CSDGM) XML schema document (XSD) and document type definition (DTD) URLs for FGDC-STD-001-1998. These documents are used to validate a FGDC XML metadata file.

There are also annotated and modified FGDC-STD-001-1998 schema available for download:

  • FGDC offers an official, annotated versions of the FGDC-STD-001-1998 schema here:
    • Last revision:
      20030801 (RER) Changed types of "srcused" ( and "srcprod"
      ( in Section 2 to reference the type
      defined for "srccitea" ( to comply with
      XML Schema constraint that key/keyref field
      value pairs be of the same type.
  • NOAA offers an annotated versions of FGDC-STD-001-1998 as part of their FGDC Remote Sensing Extensions Schema efforts here: 
    • Additional revision:
      20040127 (TS) Moved the types defined in base file, excluding
      the 'metadataType' type, into a separate
      file and included it in the base file.
  • NOAA also offers a separate and more recent, annotated version of FGDC-STD-001-1998 as part of their NCDDC efforts here:
    • Additional revision:
      2009XXXX (RER) Added Annotation information to every compound 
      and element within the standard. Missing Domain values
      were added to several types, mostly those types that had
      domain values and free text. Section 4 mapprojp (
      repeatabilitywas edited from 1-6 to 1-unbounded. Section 5
      edom ( repeatability was moved to the sequence.
      Section 6 had an extra sequence that was removed.