ISO
ISO TC 211 Geographic information/Geomatics Committee site

XML schema representations of geographic technology standards

Metadata for Resource Lineage (MRL) [Imagery]

Metadata for Resource Lineage (MRL) [ISO 19115-2] Version: 2.2

UML diagram of Metadata for Lineage classes in the mrl namespace focused on ISO 19115-2 components
Figure 1. Classes in the mrl namespace
UML diagram of Metadata for Lineage codelists in the mrl namespace from ISO 19115-2
Figure 2. Codelists in the mrl namespace

Description

MRL 2.2 is an XML Schema implementation derived from ISO 19115-2:2019 (Ed2), Geographic Information - Metadata - Part 2: Extensions for acquisition and processing, Clause 6.3.3. The MRL 2.2 schema is an extension of MRL 1.3 as defined in ISO 19115-1, Geographic Information - Metadata - Part 1: Fundamentals. It includes additional elements for describing lineage, processes and sources. The XML schema was encoded using the rules described in ISO/TS 19139:2007.

XML Namespace for Metadata for Resource Lineage (MRL) [ISO 19115-2]

The namespace URI for Metadata for Resource Lineage (MRL) [ISO 19115-2] is derived from ISO 19115-1 https://schemas.isotc211.org/19115/-1/mrl/1.3.

XML Schema for mrl 1.3

https://schemas.isotc211.org/19115/-1/mrl/1.3.0/mrl.xsd is the XML Schema document to be referenced by XML documents containing XML elements in the mrl 1.3 namespace or by XML Schema documents importing the mrl 1.3 namespace. The schema https://schemas.isotc211.org/19115/-1/mrl/1.3.0/mrl.xsd forms the basis for ISO 19115 Metadata Resource Lineage definitions from both ISO 19115-1 and ISO 19115-2. This XML schema includes (indirectly) all the implemented concepts of the mrc namespace, but it does not contain the declaration of any types.

https://schemas.isotc211.org/19115/-1/mrl/1.3.0/lineage.xsd implements the UML conceptual schema defined in ISO 19115-1, Geographic Information - Metadata - Part 1: Fundamentals AMENDMENT 1, Clause 6.5.5. Details about https://schemas.isotc211.org/19115/-1/mrl/1.3.0/lineage.xsd can be accessed from https://schemas.isotc211.org/19115/-1/mrl/1.3.0.

lineageImagery.xsd" implements the UML conceptual schema defined in ISO 19115-2, Geographic Information - Metadata - Part 2: Extensions for acquisition and processing, Clause 6.3.5. lineageImagery.xsd" LE_ProcessStep inherits attributes from ISO 19115-1:Lineage:LI_ProcessStep, and LE_Source inherits attributes from ISO 19115-1:Lineage:LI_Source. It was created using the encoding rules defined in ISO 19118, ISO 19139.

https://schemas.isotc211.org/19115/-2/mrl/2.2.0/lineageImagery.xsd contains the following classes:

  • LE_Algorithm

  • LE_NominalResolution

  • LE_Processing

  • LE_ProcessParameter

  • LE_ProcessStep

  • LE_ProcessStepReport

  • LE_Source

https://schemas.isotc211.org/19115/-2/mrl/2.2.0/lineageImagery.xsd contains references to the following codelist:

  • LE_ParameterDirection

The mrl 1.3 namespace imports these other namespaces:

Name Standard Prefix Namespace Location Schema Location

Geographic Common Objects
in its own right and also by inheritance

gco

https://schemas.isotc211.org/19103/-/gco/1.2.0

https://schemas.isotc211.org/19103/-/gco/1.2.0/gco.xsd

Geographic Markup Wrappers
by inheritance

gmw

https://schemas.isotc211.org/19163/-/gmw/1.1.0

https://schemas.isotc211.org/19163/-/gmw/1.1.0/gmw.xsd

Geospatial MetaLanguage
by inheritance

gml

http://schemas.opengis.net/gml/3.2.1/gml.xsd

http://schemas.opengis.net/gml/3.2.1/gml.xsd

Metadata Common Classes
in its own right and also by inheritance

mcc

https://schemas.isotc211.org/19115/-1/mcc/1.3.0

https://schemas.isotc211.org/19115/-1/mcc/1.3.0/mcc.xsd

CITation andresponsibility
in its own right and also by inheritance

mcc

https://schemas.isotc211.org/19115/-1/cit/1.3.0

https://schemas.isotc211.org/19115/-1/cit/1.3.0/cit.xsd

Metadata Reference System
by inheritance

mcc

https://schemas.isotc211.org/19115/-1/mrs/1.3.0

https://schemas.isotc211.org/19115/-1/mrs/1.3.0/mrs.xsd

Schematron Validation Rules for mrl 1.3 derived from ISO 19115-2

Schematron rules for validating instance documents required for a complete validation are:

Package name File name Location Constraint tested

Metadata for Resource Lineage - Extended

mrlExt.sch

https://schemas.isotc211.org/19115/-2/mrl/2.2.0/mrlExt.sch

  • LE_Source - count(description + scope) \> 0

Metadata for Resource Lineage

mrl.sch

https://schemas.isotc211.org/19115/-1/mrl/1.3.0/mrl.sch

  • LI_Source - count(description + scope) \> 0

CITation and responsibility

cit.sch

https://schemas.isotc211.org/19115/-1/cit/1.3.0/cit.sch

  • CI_Individual - count(name + positionName) \> 0

  • CI_organisation - count(name + logo) \> 0

Metadata Resource Identification

mri.sch

https://schemas.isotc211.org/19115/-1/mri/1.3.0/mri.sch

  • MD_MetadataScope/MD_Identification - MD_Metadata.metadataScope.MD_MetadataScope.resourceScope)='dataset' implies count(extent.geographicElement.EX_GeographicBoundingBox + extent.geographicElement.EX_GeographicDescription) \>= 1

  • MD_MetadataScope/MD_Identification - MD_Metadata.metadataScope.MD_Scope.resourceScope) = ('dataset' or 'series') implies topicCategory is mandatory

  • MD_DataIdentification - defaultLocale documented if resource includes textual information (test atempt only)

  • MD_DataIdentification - defaultLocale.PT_Locale.characterEncoding default value is UTF-8

  • MD_AssociatedResource - count(name + metadataReference

  • MD_Keywords/[SV_ServiceIdentification] - When the resource described is a service, one instance of MD_Keyword shall refer to the service taxonomy defined in ISO 19119

Other schematron rule sets that maybe required for a complete validation (optional direct from MD_Metadata or indirectly through associations) are:

Working Versions

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