within DataCollection complexType [def], within DataCollection complexType [def], within DataCollection complexType [def]

The URL that can be used to download the data contained in this data collection.

within vr:Interface complexType [def], within vr:Interface complexType [def]

The URL (or base URL) that a client uses to access the service. How this URL is to be interpreted and used depends on the specific Interface subclass

Although the schema allows multiple occurrences of accessURL, multiple accessURLs are deprecated. Each interface should have exactly one access URL. Where an interface has several mirrors, the accessURL should reflect the “primary” (fastest, best-connected, best-maintained) site, the one that non-sophisticated clients will go to. Additional accessURLs should be put into mirrorURLs. Advanced clients can retrieve the mirrorURLs and empirically determine interfaces closer to their network location.

within doc:Document complexType [def]

A URL allowing access to one or more renderings of the document.

Dereferencing the URL will allow access to ready-to-use forms of the document (e.g., PDF, HTML). For documents available in multiple languages, this should typically be a "landing page" containing links to the different language versions; this could be identical to the resource's reference URL. Multiple access URLs may be given; there is no requirement that the various access URLs offer the same content. Clients are advised to consult all access URLs for the most recent and appropriate rendering of the document.

within vr:Interface complexType [def]

The URL (or base URL) that a client uses to access the service. How this URL is to be interpreted and used depends on the specific Interface subclass

When more than one URL is given, each represents an alternative (i.e. mirror) endpoint whose behavior is identical to all the other accessURLs listed.

Editor's note: this element assumes that all registered services are inherently web based.

Type:	anonymous (restriction of xs:NMTOKEN)
Use:	optional
Defined:	locally within vr:AccessURL complexType

Derivation:

restriction of xs:NMTOKEN

<xs:attribute name="use"> <xs:annotation> <xs:documentation> A flag indicating whether this should be interpreted as a base URL, a full URL, or a URL to a directory that will produce a listing of files. </xs:documentation> <xs:documentation> The default value assumed when one is not given depends on the context. </xs:documentation> </xs:annotation> <xs:simpleType> <xs:restriction base="xs:NMTOKEN"> <xs:enumeration value="full"> <xs:annotation> <xs:documentation> Assume a full URL--that is, one that can be invoked directly without alteration. This usually returns a single document or file. </xs:documentation> </xs:annotation> </xs:enumeration> <xs:enumeration value="base"> <xs:annotation> <xs:documentation> Assume a base URL--that is, one requiring an extra portion to be appended before being invoked. </xs:documentation> </xs:annotation> </xs:enumeration> <xs:enumeration value="dir"> <xs:annotation> <xs:documentation> Assume URL points to a directory that will return a listing of files. </xs:documentation> </xs:annotation> </xs:enumeration> </xs:restriction> </xs:simpleType> </xs:attribute>