VOResource xs vr Implementation of an XML Schema describing a resource to be used in the Virtual Observatory Project. Based on "Resource Metadata for the Virtual Observatory", Version 0.8, February 2002 by Bob Hanisch et al. Diff 0.05-0.06: The Topologi tool apparently doesn't like annotations of global elements referenced locally. Although, this does not appear to be in violation of the XML Schema standard, they have been commented out for the time being. Diff 0.06-0.1: Changed target namespace to http://www.ivoa.net/xml/prop/VOResource. Diff 0.8-0.1: Updated for RM v0.8; jumped version # to match RM. Diff 0.8.1-0.8: A proposed structuring of the RM model for v0.9 Diff 0.8.2-0.8.1: "Manager" changed back to "Publisher"; "Subject" contents elevated one level, "Topic" changed back to "Subject"; more documentation; "ResourceKey" made mandatory; added extensible relationships. Diff 0.8.3-0.8.2: fix bug in def of VOResource; set minimum mandatory elements; added LogicalIdentifier; added admin attributes to Resource: created, updated, status; moved Description, ReferenceURL, Source to Summary element; added Source; correct misspelling of categoryType; added "Other" type; make RelatedTo a ResourceReferenceType; dropped ManagedResourceType; dropped Contact/Address,Phone; added role attribute to Date; dropped ProjectRef,DataCollRef,ServiceRef,OrgRef; Interface overhaul: move URL (as AccessURL) up as common child, move ParamHTTPGet to VODataService (as ParamHTTP). Diff 0.9-0.8.3: primarily version update to WD status; more vm tagging. A description of one or more VO Resources This element is used as a general container for multiple resource descriptions and can be used as a root element. A description of a single VO Resource This element is used as a general container for a single resource descriptions and can be used as a root element. Any entity that is describable and identifiable by a IVOA Identifier. This is typically not provided unless this resource is claiming to be a mirror of another. Multiple LogicalIdentifiers can be present, usually with different role attributes. For each role, there should be a corresponding relationship described under a RelatedResource, when applicable. The date this resource metadata description was created. The date this resource metadata description was last updated. a tag indicating whether this resource is believed to be still actively maintained. resource is believed to be currently maintained, and its description is up to date (default). resource is apparently not being maintained at the present. resource publisher has explicitly deleted the resource. Identifier Unambiguous reference to the resource conforming to the IVOA standard for identifiers the identifier of a namespace under the control of a single naming authority a name for a resource that is unique within an authority's namespace Title the full name of a resource a short name or abbreviation for this resource that applications may use to refer to this resource in a compact display. One word or a few letters is recommended. An informational, human-readable overview of a resource. Description An account of the nature of the resource Source a bibliographic reference from which the present resource is derived or extracted. This is intended to point to an article in the published literature. An ADS Bibcode is recommended as a value when available. The reference format. Recognized values include "bibcode", refering to a standard astronomical bibcode bibcode (http://cdsweb.u-strasbg.fr/simbad/refcode.html). URL pointing to a human-readable document describing this resource. Type Nature or genre of the content of the resource resource that does not fall into any of the category names currently defined. Collection of pointed observations Collection of bibliographic reference, abstracts, and publications Collection of derived data, primarily in tabular form Collection of scholarly publications under common editorial policy Collection of published materials (journals, books, etc.) Theoretical simulation or model Collection of observations covering substantial and contiguous areas of the sky A service that transforms data Collection of materials appropriate for educational use, such as teaching resources, curricula, etc. Collection of materials appropriate for public outreach, such as press releases and photo galleries Collection of materials that may be suitable for EPO products but which are not in final product form, as in Type Outreach or Type Education. EPOResource would apply, e.g., to archives with easily accessed preview images or to surveys with easy-to-use images. Animation clips of astronomical phenomena Artists' renderings of astronomical phenomena or objects Background information on astronomical phenomena or objects Compilations of basic astronomical facts about objects, such as approximate distance or membership in constellation. Historical information about astronomical objects Publication-quality photographs of astronomical objects Press releases about astronomical objects An organization that is a publisher or curator of other resources. A project that is a publisher or curator of other resources Collection of pointed observations an description of a relationship to another resource. a property that relates one resource to another. the resource that is related to the current one being described. a reference to a group of resources which the current resouce claims to be similar to in some way. A resource's registered identifier (given by the Identifier element) is its default LogicalIdentifier. a name refering to the characteristic that relates resources having this logical identifier. recognized values include "mirror" indicating that all resources with this logical ID are mirrors of each other; when role="mirror", there should be associated "mirror-of" relationship metadata. Information regarding the general curation of the resource Publisher Entity (e.g. person or organisation) responsible for making the resource available Information that can be used for contacting someone with regard to this resource. the name of someone or something This name may or may not refer to a resource; thus it is more generic than "Title". an email address Date Date associated with an event in the life cycle of the resource. This will typically be associated with the creation or availability (i.e., most recent release or version) of the resource. A string indicating what the date refers to. While this vocabulary is uncontroled, recognized strings include "creation", indicating the date that the resource itself was created, and "updated", indicating when the resource was updated last. The default value, "representative", means that the date is a rough representation of the time coverage of the resource. Note that this date refers to the resource; dates describing the metadata description of the resource are handled by the "created" and "updated" attributes of the Resource element. Contributor Entity responsible for contributions to the content of the resource Creator The entity (e.g. person or organisation) primarily responsible for creating the content or constitution of the resource URL pointing to a graphical logo, which may be used to help identify the information source Label associated with creation or availablilty of a version of a resource. Subject List of topics, object types, or other descriptive keywords about the resource. Terms for Subject should be drawn from the IAU Astronomy Thesaurus (http://msowww.anu.edu.au/library/thesaurus/). Subject Subject.ContentLevel Description of the content level or intended audience Resource provides information appropriate for all users Resource provides information appropriate for use in elementary education (e.g. approximate ages 6-11) Resource provides information appropriate for use in middle school education (e.g. approximate ages 11-14) Resource provides information appropriate for use in elementary education (e.g. approximate ages 14-18) Resource provides information appropriate for use in community/junior college or early university education. Resource provides information appropriate for use in university education Resource provides information appropriate for supporting scientific research. Resource provides information of interest to amateur astronomers. Resource provides information appropriate for education at museums, planetariums, and other centers of informal learning. Subject Subject.Instrument the observatory or facility used to collect the data contained or managed by this resource. Subject Subject.Instrument the Instrument used to collect the data contain or managed by a resource. A resource that provides an interface for executing some operation or retrieving data. A description of a service interface. For common types of interfaces, this element can be used directly to tag the description. However, some interfaces require additional metadata beyond what is provide by this element; in this case, one might use a member of the Interface substitution group (e.g. ParamHTTP from the VODataService schema). This is typically used as a base type for defining specific kinds of service interfaces. If this type is used directly, the Description element should be used to describe how to invoke the service. Specifically, a textual description of the interface. This is typically only used when a structured description is not available or supported for this particular type of interface. Whether this refers to a base or full URL depends on the specific class of interface. If Editor's note: this element assumes that all registered services are inherently web based. The type of interface used by the current Service, expressed as a controlled name. A custom web-based interface that does not fit into any of the other predefined types. A Description element should be used to describe how to use the AccessURL to invoke the service. A service that is described using extended Interface metadata. This value should be chosen when Interface is extended to add additional metadata. See ParamHTTPGet defined in VODataService as an example. A Web Service that is describable by a WSDL document. The AccessURL element gives the URL to the WSDL document for the service. A (form-based) service intended to be accessed interactively by a user via a web browser. The AccessURL element gives the URL to the HTML document used to access the service. A web-based service that is described in a GLU registry. The AccessURL element gives the URL to the GLU record describing the service. A full or base URL that can be used to access data or a service. 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. The default value assumed when one is not given depends on the context. Assume a full URL--that is, one that can be invoked directly without alteration. This usually returns a single document or file. Assume a base URL--that is, one requiring an extra portion to be appended before being invoked. Assume URL points to a directory that will return a listing of files. a specific description of the context and capabilities of a service. This is a base type for defining specific kinds of service capability descriptions, each with its own special mark-up schema. An identifier for a registered standard. A URL that points to a human-readable document that describes the standard upon which a resource is based. This is different from the Service's ReferenceURL, which should describe the specific implementation of the standard service.