This is the namespace document for the "base" XML schema used in the Protocol for Web Description resources (POWDER). It defines the structure for Description Resources where these are serialized in XML.
The root element of a POWDER document.
This element is used to refer to another relevant POWDER document, by specifying its IRI as value of the src attribute. It can occur any number of times in a POWDER document, and only as a child of the powder element.
This element is used to encapsulate information about the current POWDER document. It can occur only one time in a POWDER document, and only as a child of the
powder
element.
This element is used to denote the author of the current POWDER document. It must occur exactly one time in a POWDER document, and only as a child of the attribution element.
This element is used to denote the issue date of the current POWDER document. It can occur only one time in a POWDER document, and only as a child of the attribution element.
This element is used to denote the date from which a POWDER document is valid. It can occur only one time in a POWDER document, and only as a child of the attribution element.
This element is used to denote the date until which a POWDER document is valid. It can occur only one time in a POWDER document, and only as a child of the attribution element.
This element provides a pointer, expressed as an IRI, to a third-party certifying the current POWDER document. It can occur any number of times in a POWDER document, and only as a child of the attribution element.
This element denotes, through a regular expression, the set of IRIs to which the DRs in a POWDER document apply. As such, it is a set of IRIs including the union of the set of IRIs denoted by all the instances of the iriset element in a given POWDER document.
This element denotes an ordered list of DRs. It can appear in a POWDER document in alternative to elements dr and descriptorset, only as a child of the powder element, and it can occur any number of times.
This element denotes a Description Resource (DR). It can occur any number of times in a POWDER document, and only as a child of elements powder and ol.
This element denotes the description of the resources in the DR scope, expressed by a set of descriptors, defined in specific vocabularies. It must occur exactly one time in a DR, and only as a child of elements powder and dr.
This element denotes a set of IRIs of the resources in the DR scope, expressed by instances of elements includeregex and excluderegex. It must occur at least one time in a DR, and only as a child of the dr element.
This element denotes, through a regular expression, the set of IRIs matching the specified pattern.
This element denotes, through a regular expression, the set of IRIs which do not match the specified pattern.
This element is used for asserting that all the resources identified in the IRI set are instances of a particular class - i.e., asserting the rdf:type property. I can occur any number of times as a child of the descriptorset element.
This element is used to associate a tag set and descriptor set with another descriptive or informative resource (not necessarily a POWDER document), by specifying its IRI as value of the src attribute. It can occur any number of times as a child of the descriptorset and tagset elements.
The purpose of this element is equivalent to the one of the RDF Schema property rdfs:label. It can occur any number of times as a child of elements descriptorset and tagset.
The purpose of this element is equivalent to the one of the RDF Schema property rdfs:comment. It can occur any number of times as a child of elements descriptorset and tagset.
This element is used to provide a textual summary of the statements in a DR. It should occur only one time in a DR, and only as a child of the descriptorset element.
This element is used to provide the IRI of an image corresponding to the graphic summary of a DR. It should occur only one time in a DR, and only as a child of the descriptorset element.
This element is used to encapsulate the SHA1 sum of the POWDER document denoted by the DR scope. It can occur only one time in a DR, and only as a child of the descriptorset element.
This element is used to state whether a DR certifies the validity of the POWDER document denoted by the scope. It can occur only one time in a DR, and only as a child of the
descriptorset element.
This element provides a pointer, expressed as an IRI, to a third-party from which data is available that will confirm the claims and assertions made in the DR. It can occur as a child of elements attribution and descriptorset.
This element denotes the description of the resources in the DR scope, expressed by a set of tags...
This element denotes a free text tag, describing a characteristics of the resources in the DR scope. It must occur at least one time in a DR, and only as a child of the tagset element.
This type defines the structure of the powder element, which has as required child the attribution element, as optional child the more element, whereas any of elements ol, descriptorset, and dr can occur zero or more times.
This is the type for all element having a required attribute src, and no child nodes.
This attribute takes as value a single IRI.
This type defines the structure of the attribution element, which consists of seven child elements, namely, issuedby, which must occur exactly one time, and issued, validfrom, validuntil, aboutregex, which can occur at most one time, and, finally, certifiedby and supportedby, which can occur any number of times. Additionally, attribution can include further elements from external vocabularies.
This type defines the structure of the ol element, which consists of a required child element, namely, the dr element, which must occur at least one time.
This type defines the structure of the dr element, which consists of two required child elements, namely, the iriset element, which must occur at least one time, and one element, occuring exactly one time, which can be either the descriptorset or the tagset element, or both.
This type defines the structure of the iriset element, which consists of two child elements, namely, element includeregex, which must occur exactly one or more times, and element excluderegex, which is optional, and it can occur any number of times. Additionally, iriset may have as children IRI constraints defined in separate XML schemas.
This element is included in order to allow the extension of element iriset with additional sets of IRI constraints, defined in separate XML schemas.
This type defines the structure of the descriptorset element, which can have one of the following alternative forms:
descriptorset is a direct child of element powder, it must be associated with attribute xml:id or node, and include one or more child elements.descriptorset is a child of element dr, it can include one or more child elements, unless it is associated with attribute rdf:resource, src or include. In such a case, no child elements are allowed.This attribute takes as value a single IRI referring to an instance of element descriptorset included in an external POWDER document, specified through attribute xml:id.
This attribute associates an identifier to a descriptorset, allowing other instances of element descriptorset in the same POWDER document to refer to it by using the include attribute.
This attribute takes as value the identifier of another instance of element descriptorset in the same POWDER document, specified through attributes node or xml:id.
This type defines the structure of the tagset element, corresponding to one or more instances of the tag element, and to zero or more instances of elements seealso, comment, and label.
This is the type for all elements including textual content (possibly, with markup).