GCO 1.0 is an XML Schema implementation derived from ISO 19115-1, ISO/TS 19139 Geographic information - Metadata - XML schema implementation, Clause . It includes elements for describing basic types from ISO/TS 19103 and conceptual elements from ISO 19118 required in XML implementations of ISO metadata standards. The XML schema was encoded using the rules described in ISO/TS 19139:2007, Clause 8 and implementation approach from ISO/TS19115-3, Clause 8.

The namespace URI for gco 1.0 is http://standards.iso.org/iso/19115/-3/gco/1.0.

gco.xsd is the XML Schema document to be referenced by XML documents containing XML elements in the gco 1.0 namespace or by XML Schema documents importing the gco 1.0 namespace. This XML schema includes (indirectly) all the implemented concepts of the gco namespace, but it does not contain the declaration of any types.

baseTypes.xsd implements the UML conceptual schema defined in ISO 19115-1, ISO/TS 19139 Geographic information - Metadata - XML schema implementation, Clause . It was created using the encoding rules defined in ISO 19118, ISO 19139, and the implementation approach described in ISO 19115-3 and contains the following classes (codeLists are bold): AbstractObject, TypeName, MemberName, Multiplicity, MultiplicityRange, CharacterString, Boolean, DateTime, Date, Decimal, Real, Integer, UnlimitedInteger, Record, RecordType, Binary, UomIdentifier, Measure, Length, Distance, Angle, AbstractGenericName, ScopedName, and TM_PeriodDuration

The gco 1.0 namespace imports these other namespaces:

When revisions to these schema become necessary, they will be managed in the ISO TC211 Git Repository.