Examples
Worked examples
- Is an instance
A digital preservation system such as Archivematica or RODA generates a PREMIS Event record each time it runs a fixity check, format-normalization migration, or virus scan on an archived file — recording the event type, timestamp, outcome, and the software agent that performed it.
- Is an instance
An institutional repository exports a METS package for long-term storage where the administrative metadata section's digital-provenance subsection contains an embedded PREMIS XML block describing the deposited object's identifier, original file format, and the chain of preservation events applied since ingest.
Counter-examples
Looks similar, but isn't
- Not an instance
A dataset's title, subject keywords, and author list are descriptive metadata used for discovery, not PREMIS metadata — PREMIS explicitly treats the Intellectual Entity (the "work" a file represents) as out of scope, leaving that role to standards like Dublin Core or MODS.
Editorial commentary
PREMIS — PREservation Metadata: Implementation Strategies — is the data dictionary for preservation metadata maintained by the Library of Congress. It defines the semantic units repositories use to record what a digital object is, what has happened to it, who acted on it, and what permissions govern its long-term preservation. It is not a file format or transfer package in its own right; it is most often implemented as an XML schema (premis.xsd) embedded inside a METS document, or stored natively in a repository’s preservation system.
The PREMIS data model: four in-scope entities
The PREMIS data model defines five conceptual entities, but the Data Dictionary itself only specifies semantic units for four of them — the fifth, the Intellectual Entity (the “work” a digital file represents), is deliberately left out of scope because descriptive-metadata standards such as Dublin Core or MODS already serve it.
- Object — the digital file, bitstream, or representation being preserved: its identifier, format, size, and fixity (checksum) information. This overlaps closely with technical metadata.
- Event — a preservation action taken on an object over time: ingest, fixity check, format migration, virus scan, deletion — each recorded with a type, date/time, outcome, and linkage to the agent that performed it.
- Agent — the person, organization, or piece of software responsible for an event. PREMIS does not define detailed Agent semantics itself; it expects agent identity to be described using an existing standard (e.g. MARC, vCard) and simply links to it.
- Rights — the permissions governing what preservation actions (copying, migrating, disseminating) are actually allowed, scoped specifically to preservation activity rather than to access or distribution rights generally.
PREMIS and METS: a common pairing
PREMIS and METS are frequently confused because they are so often used together, but they solve different problems. METS is a wrapper/structure standard: it organizes a digital object into sections (descriptive metadata, administrative metadata, a file manifest, a structural map) and states which metadata standard fills each section — commonly MODS for description and PREMIS for preservation. PREMIS supplies the actual preservation-event and rights content that goes inside METS’s administrative metadata section (specifically its digital-provenance and technical subsections). In other words: METS is the envelope: PREMIS is what fills the preservation-relevant part of it. Digital preservation systems such as Archivematica and RODA generate both together as a matter of course.
Within CASRAI’s own metadata terms, PREMIS sits alongside the broader category of administrative metadata (rights, provenance, technical, and access-control information used to manage a resource) as one concrete, widely-adopted implementation of that category specifically for long-term digital preservation.
Why it matters for research data
For research data repositories, PREMIS is the mechanism by which a “we will preserve your data” commitment becomes auditable: it is how a repository demonstrates, years after deposit, exactly when a fixity check last ran, whether a format migration ever happened, and who or what performed each action — evidence that matters for trustworthy-repository certification frameworks and for researchers who need to show their data remains authentic and unaltered since deposit.
Current version
The current release is PREMIS Data Dictionary for Preservation Metadata, version 3.0, published and maintained by the Library of Congress’s PREMIS Editorial Committee.
References
- Library of Congress, ‘PREMIS Data Dictionary for Preservation Metadata, Version 3.0’ (loc.gov/standards/premis/v3/).
Machine-readable encodings
Use in your systems
<role vocab="credit"
vocab-identifier="https://casrai.org/dictionary/"
vocab-term="PREMIS"
vocab-term-identifier="https://casrai.org/dictionary/term/premis" />{
"@context": "https://schema.org",
"@type": "DefinedTerm",
"@id": "https://casrai.org/dictionary/term/premis",
"name": "PREMIS",
"identifier": "https://casrai.org/dictionary/term/premis",
"description": "A resource's metadata qualifies as PREMIS metadata when it is structured according to the PREMIS Data Dictionary for Preservation Metadata (currently version 3.0, maintained by the Library of Congress), populating semantic units under one or more of PREMIS's four in-scope entities — Object, Event, Agent, and Rights — to document what a digital object is, what has happened to it over time, who or what acted on it, and what permissions govern its preservation. PREMIS is a data dictionary, not a file format or package standard in the way METS is; it is most commonly implemented as an XML schema (premis.xsd) embedded inside a METS document's administrative metadata section, or serialized natively inside a repository's own preservation system.",
"inDefinedTermSet": "https://casrai.org/dictionary/domain/data-infrastructure#set",
"url": "https://casrai.org/dictionary/term/premis",
"sameAs": [],
"license": "https://creativecommons.org/licenses/by/4.0/",
"publisher": {
"@id": "https://casrai.org/#organization"
},
"dateModified": "2026-07-18T06:30:49",
"inLanguage": "en"
}
