PREMIS 3 Ontology Ontology for PREMIS 3, the international standard for metadata to support the preservation of digital objects and ensure their long-term usability. 2018-10-12 2018/10/12 Action Operation type to perform on an Object. Effectively performing this action may produce an Event. Agent Actor (human, machine, or software) associated with one or more Event and/or Rights statement associated with a digital object. Bitstream Contiguous or non-contiguous data within a file that has meaningful properties for preservation purposes. Copyright Copyright law. Dependency Relationship where one Object requires another Object to support its function, delivery, or the coherence of its content. Environment characteristic An assessment of the extent to which the described environment supports its purpose. Event Action performed within or outside the repository that affects its capability to preserve Objects over the long term. File Named and ordered sequence of bytes that is known to an operating system. Fixity Information used to verify whether an object has been altered in an undocumented or unauthorized way. Hardware agent Identifier An unambiguous reference to the PREMIS entity within the preservation repository. Inhibitor Feature of a Digital Object intended to inhibit access, copying, dissemination, or migration. Common Inhibitors are encryption and password protection. Institutional policy A policy decision made by an organization. Intellectual entity A set of content that is considered a single intellectual unit for purposes of management and description: for example, a particular book, map, photograph, database, or piece of hardware or software. An Intellectual Entity can include other Intellectual Entities; for example, a web site can include a web page; a web page can include an image. An Intellectual Entity may have one or more digital representations. An Intellectual Entity may also describe an environment, defined as technology supporting a digital object in some way (e.g. by rendering or executing it). Environments can consist of software, hardware, or a combination of both. License A license agreement or other legal document that grants rights. Object Discrete unit of information subject to digital preservation. Subclasses of Object are Intellectual Entity, Representation, File and Bitstream. Organization Outcome status Overall result of the Event in terms of success, partial success, or failure. Person Preservation policy Information indicating the decision or policy on the set of preservation functions to be applied to an object and the context in which the decision or policy was made. Note that in addition to subclasses declared at presLevType, SignificantProperties is also a subclass of PreservationPolicy. Implementers may also wish to create locally-defined subclasses. Representation Digital or physical Object instantiating or embodying an Intellectual Entity. A digital representation is the set of stored digital files and structural metadata needed to provide a complete and reasonable rendition of the Intellectual Entity. A physical representation is an item such as a manuscript, video cassette, or printed document. Rights basis Designation of the basis for the right or permission governing the Object. Rights status Information about how a RightsBasis applies to a particular object. Rule Statement about the Actions an Agent is permitted to undertake or prohibited from undertaking with respect to an Object. Signature Mathematical technique used to validate the authenticity and integrity of a message, software or digital document. Signature encoding Encoding used for the signature value and key information. Significant properties Characteristics of a particular object subjectively determined to be important to maintain through preservation actions. Software agent Statute A law that grants or revokes rights, such as laws governing privacy or orphan works. Storage location Information needed to retrieve a physical item from its physical storage location or a file from the storage system, or to access a bitstream within a file. Storage medium The physical medium on which the Object is stored (e.g., magnetic tape, hard disk, CD-ROM, DVD). act allows governs has basis Links from a RightsStatus to the RightsBasis instance that supports or documents it. has characteristic has dependency has documentation has encoding has fixity has identifier has jurisdiction has medium has outcome has policy has purpose has relationship has rights status has signature inhibited by inhibits prohibits stored at end date has citation has composition level has determination date has key has note has original name has outcome note has rationale has restriction has size has terms has validation rules has version start date