constraints

Table of Contents

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Schema Document Properties

Target Namespacehttp://www.isotc211.org/2005/gmd
Version0.1
Element and Attribute Namespaces
  • Global element and attribute declarations belong to this schema's target namespace.
  • By default, local element declarations belong to this schema's target namespace.
  • By default, local attribute declarations have no namespace.
Schema Composition
  • This schema imports schema(s) from the following namespace(s):
DocumentationThis file was generated from ISO TC/211 UML class diagrams == 01-26-2005 12:40:01 ======

Declared Namespaces

PrefixNamespace
xmlhttp://www.w3.org/XML/1998/namespace
gmdhttp://www.isotc211.org/2005/gmd
gcohttp://www.isotc211.org/2005/gco
xlinkhttp://www.w3.org/1999/xlink
xshttp://www.w3.org/2001/XMLSchema
Schema Component Representation
<xs:schema targetNamespace="http://www.isotc211.org/2005/gmd" elementFormDefault="qualified" version="0.1">
<xs:import namespace="http://www.isotc211.org/2005/gco" schemaLocation="../gco/gco.xsd"/>
...
</xs:schema>
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Global Declarations

Element: MD_ClassificationCode

NameMD_ClassificationCode
Typegco:CodeListValue_Type
Nillableno
Abstractno
XML Instance Representation
<gmd:MD_ClassificationCode
codeList="xs:anyURI [1]"
codeListValue="xs:anyURI [1]"
codeSpace="xs:anyURI [0..1]">
xs:string
</gmd:MD_ClassificationCode>
Schema Component Representation
<xs:element name="MD_ClassificationCode" type="gco:CodeListValue_Type" substitutionGroup="gco:CharacterString"/>
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Element: MD_Constraints

NameMD_Constraints
Typegmd:MD_Constraints_Type
Nillableno
Abstractno
XML Instance Representation
<gmd:MD_Constraints
id="xs:ID [0..1]"
uuid="xs:string [0..1]">
<gmd:useLimitation> gco:CharacterString_PropertyType </gmd:useLimitation> [0..*]
</gmd:MD_Constraints>
Schema Component Representation
<xs:element name="MD_Constraints" type="gmd:MD_Constraints_Type"/>
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Element: MD_LegalConstraints

  • This element can be used wherever the following element is referenced:
NameMD_LegalConstraints
Typegmd:MD_LegalConstraints_Type
Nillableno
Abstractno
XML Instance Representation
<gmd:MD_LegalConstraints
id="xs:ID [0..1]"
uuid="xs:string [0..1]">
<gmd:useLimitation> gco:CharacterString_PropertyType </gmd:useLimitation> [0..*]
<gmd:accessConstraints> gmd:MD_RestrictionCode_PropertyType </gmd:accessConstraints> [0..*]
<gmd:useConstraints> gmd:MD_RestrictionCode_PropertyType </gmd:useConstraints> [0..*]
<gmd:otherConstraints> gco:CharacterString_PropertyType </gmd:otherConstraints> [0..*]
</gmd:MD_LegalConstraints>
Schema Component Representation
<xs:element name="MD_LegalConstraints" type="gmd:MD_LegalConstraints_Type" substitutionGroup="gmd:MD_Constraints"/>
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Element: MD_RestrictionCode

NameMD_RestrictionCode
Typegco:CodeListValue_Type
Nillableno
Abstractno
XML Instance Representation
<gmd:MD_RestrictionCode
codeList="xs:anyURI [1]"
codeListValue="xs:anyURI [1]"
codeSpace="xs:anyURI [0..1]">
xs:string
</gmd:MD_RestrictionCode>
Schema Component Representation
<xs:element name="MD_RestrictionCode" type="gco:CodeListValue_Type" substitutionGroup="gco:CharacterString"/>
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Element: MD_SecurityConstraints

  • This element can be used wherever the following element is referenced:
NameMD_SecurityConstraints
Typegmd:MD_SecurityConstraints_Type
Nillableno
Abstractno
XML Instance Representation
<gmd:MD_SecurityConstraints
id="xs:ID [0..1]"
uuid="xs:string [0..1]">
<gmd:useLimitation> gco:CharacterString_PropertyType </gmd:useLimitation> [0..*]
<gmd:classification> gmd:MD_ClassificationCode_PropertyType </gmd:classification> [1]
<gmd:userNote> gco:CharacterString_PropertyType </gmd:userNote> [0..1]
<gmd:classificationSystem> gco:CharacterString_PropertyType </gmd:classificationSystem> [0..1]
<gmd:handlingDescription> gco:CharacterString_PropertyType </gmd:handlingDescription> [0..1]
</gmd:MD_SecurityConstraints>
Schema Component Representation
<xs:element name="MD_SecurityConstraints" type="gmd:MD_SecurityConstraints_Type" substitutionGroup="gmd:MD_Constraints"/>
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Global Definitions

Complex Type: MD_ClassificationCode_PropertyType

Super-types:None
Sub-types:None
NameMD_ClassificationCode_PropertyType
Abstractno
XML Instance Representation
<...
gco:nilReason="[0..1]">
Start Sequence [0..1]
<gmd:MD_ClassificationCode> ... </gmd:MD_ClassificationCode> [1]
End Sequence
</...>
Schema Component Representation
<xs:complexType name="MD_ClassificationCode_PropertyType">
<xs:sequence minOccurs="0">
<xs:element ref="gmd:MD_ClassificationCode"/>
</xs:sequence>
<xs:attribute ref="gco:nilReason"/>
</xs:complexType>
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Complex Type: MD_Constraints_PropertyType

Super-types:None
Sub-types:None
NameMD_Constraints_PropertyType
Abstractno
XML Instance Representation
<...
xlink:type="simple [0..1]"
xlink:href="[0..1]"
xlink:role="[0..1]"
xlink:arcrole="[0..1]"
xlink:title="[0..1]"
xlink:show="[0..1]"
xlink:actuate="[0..1]"
uuidref="xs:string [0..1]"
gco:nilReason="[0..1]">
Start Sequence [0..1]
<gmd:MD_Constraints> ... </gmd:MD_Constraints> [1]
End Sequence
</...>
Schema Component Representation
<xs:complexType name="MD_Constraints_PropertyType">
<xs:sequence minOccurs="0">
<xs:element ref="gmd:MD_Constraints"/>
</xs:sequence>
<xs:attributeGroup ref="gco:ObjectReference"/>
<xs:attribute ref="gco:nilReason"/>
</xs:complexType>
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Complex Type: MD_Constraints_Type

Super-types:gco:AbstractObject_Type < MD_Constraints_Type (by extension)
Sub-types:
NameMD_Constraints_Type
Abstractno
DocumentationRestrictions on the access and use of a dataset or metadata
XML Instance Representation
<...
id="xs:ID [0..1]"
uuid="xs:string [0..1]">
<gmd:useLimitation> gco:CharacterString_PropertyType </gmd:useLimitation> [0..*]
</...>
Schema Component Representation
<xs:complexType name="MD_Constraints_Type">
<xs:complexContent>
<xs:extension base="gco:AbstractObject_Type">
<xs:sequence>
<xs:element name="useLimitation" type="gco:CharacterString_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
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Complex Type: MD_LegalConstraints_PropertyType

Super-types:None
Sub-types:None
NameMD_LegalConstraints_PropertyType
Abstractno
XML Instance Representation
<...
xlink:type="simple [0..1]"
xlink:href="[0..1]"
xlink:role="[0..1]"
xlink:arcrole="[0..1]"
xlink:title="[0..1]"
xlink:show="[0..1]"
xlink:actuate="[0..1]"
uuidref="xs:string [0..1]"
gco:nilReason="[0..1]">
Start Sequence [0..1]
<gmd:MD_LegalConstraints> ... </gmd:MD_LegalConstraints> [1]
End Sequence
</...>
Schema Component Representation
<xs:complexType name="MD_LegalConstraints_PropertyType">
<xs:sequence minOccurs="0">
<xs:element ref="gmd:MD_LegalConstraints"/>
</xs:sequence>
<xs:attributeGroup ref="gco:ObjectReference"/>
<xs:attribute ref="gco:nilReason"/>
</xs:complexType>
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Complex Type: MD_LegalConstraints_Type

Super-types:gco:AbstractObject_Type < MD_Constraints_Type (by extension) < MD_LegalConstraints_Type (by extension)
Sub-types:None
NameMD_LegalConstraints_Type
Abstractno
DocumentationRestrictions and legal prerequisites for accessing and using the dataset.
XML Instance Representation
<...
id="xs:ID [0..1]"
uuid="xs:string [0..1]">
<gmd:useLimitation> gco:CharacterString_PropertyType </gmd:useLimitation> [0..*]
<gmd:accessConstraints> gmd:MD_RestrictionCode_PropertyType </gmd:accessConstraints> [0..*]
<gmd:useConstraints> gmd:MD_RestrictionCode_PropertyType </gmd:useConstraints> [0..*]
<gmd:otherConstraints> gco:CharacterString_PropertyType </gmd:otherConstraints> [0..*]
</...>
Schema Component Representation
<xs:complexType name="MD_LegalConstraints_Type">
<xs:complexContent>
<xs:extension base="gmd:MD_Constraints_Type">
<xs:sequence>
<xs:element name="accessConstraints" type="gmd:MD_RestrictionCode_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
<xs:element name="useConstraints" type="gmd:MD_RestrictionCode_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
<xs:element name="otherConstraints" type="gco:CharacterString_PropertyType" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
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Complex Type: MD_RestrictionCode_PropertyType

Super-types:None
Sub-types:None
NameMD_RestrictionCode_PropertyType
Abstractno
XML Instance Representation
<...
gco:nilReason="[0..1]">
Start Sequence [0..1]
<gmd:MD_RestrictionCode> ... </gmd:MD_RestrictionCode> [1]
End Sequence
</...>
Schema Component Representation
<xs:complexType name="MD_RestrictionCode_PropertyType">
<xs:sequence minOccurs="0">
<xs:element ref="gmd:MD_RestrictionCode"/>
</xs:sequence>
<xs:attribute ref="gco:nilReason"/>
</xs:complexType>
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Complex Type: MD_SecurityConstraints_PropertyType

Super-types:None
Sub-types:None
NameMD_SecurityConstraints_PropertyType
Abstractno
XML Instance Representation
<...
xlink:type="simple [0..1]"
xlink:href="[0..1]"
xlink:role="[0..1]"
xlink:arcrole="[0..1]"
xlink:title="[0..1]"
xlink:show="[0..1]"
xlink:actuate="[0..1]"
uuidref="xs:string [0..1]"
gco:nilReason="[0..1]">
Start Sequence [0..1]
<gmd:MD_SecurityConstraints> ... </gmd:MD_SecurityConstraints> [1]
End Sequence
</...>
Schema Component Representation
<xs:complexType name="MD_SecurityConstraints_PropertyType">
<xs:sequence minOccurs="0">
<xs:element ref="gmd:MD_SecurityConstraints"/>
</xs:sequence>
<xs:attributeGroup ref="gco:ObjectReference"/>
<xs:attribute ref="gco:nilReason"/>
</xs:complexType>
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Complex Type: MD_SecurityConstraints_Type

Super-types:gco:AbstractObject_Type < MD_Constraints_Type (by extension) < MD_SecurityConstraints_Type (by extension)
Sub-types:None
NameMD_SecurityConstraints_Type
Abstractno
DocumentationHandling restrictions imposed on the dataset because of national security, privacy, or other concerns
XML Instance Representation
<...
id="xs:ID [0..1]"
uuid="xs:string [0..1]">
<gmd:useLimitation> gco:CharacterString_PropertyType </gmd:useLimitation> [0..*]
<gmd:classification> gmd:MD_ClassificationCode_PropertyType </gmd:classification> [1]
<gmd:userNote> gco:CharacterString_PropertyType </gmd:userNote> [0..1]
<gmd:classificationSystem> gco:CharacterString_PropertyType </gmd:classificationSystem> [0..1]
<gmd:handlingDescription> gco:CharacterString_PropertyType </gmd:handlingDescription> [0..1]
</...>
Schema Component Representation
<xs:complexType name="MD_SecurityConstraints_Type">
<xs:complexContent>
<xs:extension base="gmd:MD_Constraints_Type">
<xs:sequence>
<xs:element name="classification" type="gmd:MD_ClassificationCode_PropertyType"/>
<xs:element name="userNote" type="gco:CharacterString_PropertyType" minOccurs="0"/>
<xs:element name="classificationSystem" type="gco:CharacterString_PropertyType" minOccurs="0"/>
<xs:element name="handlingDescription" type="gco:CharacterString_PropertyType" minOccurs="0"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
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Legend

Complex Type:

Schema Component Type

AusAddress

Schema Component Name
Super-types:Address < AusAddress (by extension)
Sub-types:
  • QLDAddress (by restriction)
If this schema component is a type definition, its type hierarchy is shown in a gray-bordered box.
NameAusAddress
Abstractno
The table above displays the properties of this schema component.
XML Instance Representation
<... country="Australia">
<unitNo> string </unitNo> [0..1]
<houseNo> string </houseNo> [1]
<street> string </street> [1]
Start Choice[1]
<city> string </city> [1]
<town> string </town> [1]
End Choice
<state> AusStates </state> [1]
<postcode> string <<pattern = [1-9][0-9]{3}>> </postcode> [1]?
</...>

The XML Instance Representation table above shows the schema component's content as an XML instance.

Schema Component Representation
<complexTypename="AusAddress">
<complexContent>
<extensionbase="Address">
<sequence>
<elementname="state" type="AusStates"/>
<elementname="postcode">
<simpleType>
<restrictionbase="string">
<patternvalue="[1-9][0-9]{3}"/>
</restriction>
</simpleType>
</element>
</sequence>
<attributename="country" type="string" fixed="Australia"/>
</extension>
</complexContent>
</complexType>
The Schema Component Representation table above displays the underlying XML representation of the schema component. (Annotations are not shown.)
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Glossary

Abstract (Applies to complex type definitions and element declarations). An abstract element or complex type cannot used to validate an element instance. If there is a reference to an abstract element, only element declarations that can substitute the abstract element can be used to validate the instance. For references to abstract type definitions, only derived types can be used.

All Model Group Child elements can be provided in any order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-all.

Choice Model Group Only one from the list of child elements and model groups can be provided in instances. See: http://www.w3.org/TR/xmlschema-1/#element-choice.

Collapse Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32). Then, collapse contiguous sequences of space characters into single space character, and remove leading and trailing space characters.

Disallowed Substitutions (Applies to element declarations). If substitution is specified, then substitution group members cannot be used in place of the given element declaration to validate element instances. If derivation methods, e.g. extension, restriction, are specified, then the given element declaration will not validate element instances that have types derived from the element declaration's type using the specified derivation methods. Normally, element instances can override their declaration's type by specifying an xsi:type attribute.

Key Constraint Like Uniqueness Constraint, but additionally requires that the specified value(s) must be provided. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Key Reference Constraint Ensures that the specified value(s) must match value(s) from a Key Constraint or Uniqueness Constraint. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Model Group Groups together element content, specifying the order in which the element content can occur and the number of times the group of element content may be repeated. See: http://www.w3.org/TR/xmlschema-1/#Model_Groups.

Nillable (Applies to element declarations). If an element declaration is nillable, instances can use the xsi:nil attribute. The xsi:nil attribute is the boolean attribute, nil, from the http://www.w3.org/2001/XMLSchema-instance namespace. If an element instance has an xsi:nil attribute set to true, it can be left empty, even though its element declaration may have required content.

Notation A notation is used to identify the format of a piece of data. Values of elements and attributes that are of type, NOTATION, must come from the names of declared notations. See: http://www.w3.org/TR/xmlschema-1/#cNotation_Declarations.

Preserve Whitespace Policy Preserve whitespaces exactly as they appear in instances.

Prohibited Derivations (Applies to type definitions). Derivation methods that cannot be used to create sub-types from a given type definition.

Prohibited Substitutions (Applies to complex type definitions). Prevents sub-types that have been derived using the specified derivation methods from validating element instances in place of the given type definition.

Replace Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32).

Sequence Model Group Child elements and model groups must be provided in the specified order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-sequence.

Substitution Group Elements that are members of a substitution group can be used wherever the head element of the substitution group is referenced.

Substitution Group Exclusions (Applies to element declarations). Prohibits element declarations from nominating themselves as being able to substitute a given element declaration, if they have types that are derived from the original element's type using the specified derivation methods.

Target Namespace The target namespace identifies the namespace that components in this schema belongs to. If no target namespace is provided, then the schema components do not belong to any namespace.

Uniqueness Constraint Ensures uniqueness of an element/attribute value, or a combination of values, within a specified scope. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

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