Metadata Title A name given to the resource. Typically, Title will be a name by which the resource is formally known. Creator An entity primarily responsible for making the content of the resource. Examples of Creator include a person, an organization, or a service. Typically, the name of a Creator should be used to indicate the entity. Subject and Keywords A topic of the content of the resource. Typically, Subject will be expressed as keywords, key phrases, or classification codes that describe a topic of the resource. Recommended best practice is to select a value from a controlled vocabulary or formal classification scheme. Description An account of the content of the resource. Examples of Description include, but are not limited to, an abstract, table of contents, reference to a graphical representation of content, or free-text account of the content. Publisher An entity responsible for making the resource available. Examples of Publisher include a person, an organization, or a service. Typically, the name of a Publisher should be used to indicate the entity. Contributor An entity responsible for making contributions to the content of the resource. Examples of Contributor include a person, an organization, or a service. Typically, the name of a Contributor should be used to indicate the entity. Date A date of an event in the lifecycle of the resource. Typically, Date will be associated with the creation or availability of the resource. Recommended best practice for encoding the date value is defined in a profile of ISO 8601 and includes (among others) dates of the form YYYY-MM-DD. Resource Type The nature or genre of the content of the resource. Type includes terms describing general categories, functions, genres, or aggregation levels for content. Recommended best practice is to select a value from a controlled vocabulary (for example, the DCMI Type Vocabulary). To describe the physical or digital manifestation of the resource, use the Format element. Format The physical or digital manifestation of the resource. Typically, Format will include the media-type or dimensions of the resource. Format may be used to identify the software, hardware, or other equipment needed to display or operate the resource. Examples of dimensions include size and duration. Recommended best practice is to select a value from a controlled vocabulary (for example, the list of Internet Media Types defining computer media formats). Resource Identifier An unambiguous reference to the resource within a given context. Recommended best practice is to identify the resource by means of a string or number conforming to a formal identification system. Formal identification systems include but are not limited to the Uniform Resource Identifier (URI) (including the Uniform Resource Locator (URL)), the Digital Object Identifier (DOI), and the International Standard Book Number (ISBN). Source A Reference to a resource from which the present resource is derived. The present resource may be derived from the Source resource in whole or in part. Recommended best practice is to identify the referenced resource by means of a string or number conforming to a formal identification system. Language A language of the intellectual content of the resource. Recommended best practice is to use RFC 3066, which, in conjunction with ISO 639, defines two- and three-letter primary language tags with optional subtags. Examples include "en" or "eng" for English, "akk" for Akkadian, and "en-GB" for English used in the United Kingdom. Relation A reference to a related resource. Recommended best practice is to identify the referenced resource by means of a string or number conforming to a formal identification system. Coverage The extent or scope of the content of the resource. Typically, Coverage will include spatial location (a place name or geographic coordinates), temporal period (a period label, date, or date range), or jurisdiction (such as a named administrative entity). For example: "North 90, South -90, East 180, West -180. Global". Recommended best practice is to select a value from a controlled vocabulary (for example, the Thesaurus of Geographic Names [TGN]) and to use, where appropriate, named places or time periods in preference to numeric identifiers such as sets of coordinates or date ranges. Rights Management Information about rights held in and over the resource. Typically, Rights will contain a rights management statement for the resource, or reference a service providing such information. Rights information often encompasses Intellectual Property Rights (IPR), Copyright, and various Property Rights. If the Rights element is absent, no assumptions may be made about any rights held in or over the resource. Date Modified Data metadata was modified Abstract A summary of the content of the resource. Spatial Spatial characteristics of the intellectual content of the resource. Audience A class of entity for whom the resource is intended or useful. Accrual Method The method by which items are added to a collection. Accrual Periodicity The frequency with which items are added to a collection. Accrual Policy The policy governing the addition of items to a collection. Instructional Method A process, used to engender knowledge, attitudes and skills, that the resource is designed to support. Provenance A statement of any changes in ownership and custody of the resource since its creation that are significant for its authenticity, integrity and interpretation. Rights Holder A person or organization owning or managing rights over the resource. Related resource A related resource that is referenced, cited, or otherwise pointed to by the described resource. Access Rights Information about who can access the resource or an indication of its security status. Alternative Title An alternative name for the resource. Bibliographic Citation A bibliographic reference for the resource. Conforms To An established standard to which the described resource conforms. Date Created Date of creation of the resource. Date Accepted Date of acceptance of the resource. Date Copyrighted Date of copyright. Date Submitted Date of submission of the resource. Audience Education Level A class of entity, defined in terms of progression through an educational or training context, for which the described resource is intended. Extent The size or duration of the resource. Has Format A related resource that is substantially the same as the pre-existing described resource, but in another format. Has Part A related resource that is included either physically or logically in the described resource. Has Version A related resource that is a version, edition, or adaptation of the described resource. Is Format Of A related resource that is substantially the same as the described resource, but in another format. Is Part Of A related resource in which the described resource is physically or logically included. Is Referenced By A related resource that references, cites, or otherwise points to the described resource. Is Replaced By A related resource that supplants, displaces, or supersedes the described resource. Is Required By A related resource that requires the described resource to support its function, delivery, or coherence. Is Version Of A related resource of which the described resource is a version, edition, or adaptation. Date Issued Date of formal issuance (e.g., publication) of the resource. License A legal document giving official permission to do something with the resource. Mediator An entity that mediates access to the resource and for whom the resource is intended or useful. Medium The material or physical carrier of the resource. Replaces A related resource that is supplanted, displaced, or superseded by the described resource. Requires A related resource that is required by the described resource to support its function, delivery, or coherence. Table Of Contents A list of subunits of the resource. Temporal Coverage Temporal characteristics of the resource. Date Valid Date (often a range) of validity of a resource.