Angela Dappert -Digital Preservation Metadata and ...

Angela Dappert -Digital Preservation Metadata and ...

Enhancements to PREMIS in Version 3.0 Rebecca Guenther, Consultant What is digital preservation metadata? Digital preservation metadata = Metadata to ensure long-term accessibility of digital resources Digital objects must be self-descriptive Must be able to describe, manage and discover independently from the systems that were used to create them XML (machine and human readable) 2 Rebecca Guenther PREMIS Implementation Fair 2015 Sunday, February 09, 2 020 Challenges Digital objects are dependent on technology Formats and environments are complex Format information and rendering information is needed

Relationships 3 Software Hardware Dependencies (stylesheets, fonts) Physical structural Logical structural Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 The PREMIS standard Data Dictionary (PREMIS 3.0) 4 http://www.loc.gov/standards/premis/v3/ Version 3 released June 2015 XML schema v2.3 (draft for 3.0 out for review) OWL ontology (revision planned) Supporting documentation

Widely implemented, incorporated into opensource and commercial digital repository tools Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Data Model in PREMIS Version 2 Entities: things relevant to digital preservation Entity that are described by preservation metadata Relationships between Entities Properties of Entities (semantic units) Intellectual Entity iers f i t n ide iers f i t n id e ide nti fi e rs Object Representatio n File Bitstream 5

Rights ide ntif iers Agent Event ide f ie nti rs Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Levels of Object 6 Representation: set of files, including structural metadata, that, taken together, constitute a complete rendering of an Intellectual Entity File: named and ordered sequence of bytes that is known by an operating system Bitstream: data within a file with properties relevant for preservation purposes (but needs additional structure or reformatting to be stand-alone file)

Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Example: one content, 3 digital representations Representation 1 Intellectual entity Representation 2 Files page1.tif page2.tif page3.tif Files Part1.pdf Part2.pdf page1.xml page2.xml page3.xml Representation 3 Part3.pdf Partn.pdf File Book.epub 7 6 November 201 PREMIS: From V2 to V3 Improving PREMIS based on user needs

Add preservationLevelType semantic unit Add agentVersion semantic unit minor Add unknown values Add eventDetailInformation semantic unit Add authority for controlled vocabulary Make Intellectual Entity an Object category Make Environments independent Objects Add physical Objects Update conformance statement 8 Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Add preservationLevelType semantic unit 1.3 preservationLevel 9

1.3.1 preservationLevelValue 1.3.2 preservationLevelRole 1.3.3 preservationLevelRationale 1.3.4 preservationLevelDateAssigned Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Add preservationLevelType semantic unit 10 1.3 preservationLevel 1.3.1 preservationLevelType 1.3.2 preservationLevelValue 1.3.3 preservationLevelRole 1.3.4 preservationLevelRationale 1.3.5 preservationLevelDateAssigned Associate type of preservation function with preservation level. Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201

11 objectIdentifier objectIdentifierType: ARK objectIdentifierValue: ark:/9999/c1 objectCategory: file preservationLevel preservationLevelType: Bit preservation preservationLevelValue: medium preservationLevel preservationLevelType: Functional preservation preservationLevelValue: migration objectCharacteristics compositionLevel: 0 size: 726970368 format formatDesignation format name: application/vnd.ms-excel 6 November 201 Changes in version 3: Add agentVersion semantic unit If agentType is software, agentVersion can be used to refine agentName. 3.1 agentIdentifier

3.2 agentName 3.3 agentType 3.4 3.5 3.6 3.7 . 12 agentNote agentExtension linkingEventIdentifier linkingRightsStatementIdentifier Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Add agentVersion semantic unit If agentType is software, agentVersion can be used to refine agentName. 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 13

agentIdentifier agentName agentType agentVersion agentNote agentExtension linkingEventIdentifier linkingRightsStatementIdentifier linkingEnvironmentIdentifier Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Unknown compositionLevel and format compositionLevel and format: A value of unknown added if the information is not available. 14 Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Add eventDetailInformation semantic unit . 15 2.1 2.2

2.3 2.4 eventIdentifier eventType eventDateTime eventDetail 2.5 2.6 2.7 eventOutcomeInformation linkingAgentIdentifier linkingObjectIdentifier Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Add eventDetailInformation semantic unit 16 2.1 eventIdentifier 2.2 eventType 2.3 eventDateTime 2.4 eventDetailInformation 2.4.1 eventDetail 2.4.2 eventDetailExtension 2.5 eventOutcomeInformation 2.6 linkingAgentIdentifier

2.7 linkingObjectIdentifier Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 PREMIS: From V2 to V3 Improving PREMIS based on user needs Add preservationLevelType semantic unit Add agentVersion semantic unit minor Add unknown values Add eventDetailInformation semantic unit bonus Add authority for controlled vocabulary Make Intellectual Entity an Object category Make Environments independent Objects Add physical Objects Update conformance statement 17 Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Implementation specific change: Add authority for controlled vocabulary eventIdentifier:

eventIdentifierType: UUID eventIdentifierValue: 908985d3-9600-4da4-a7e7capture c6e9508bf24c compression eventType: validation creation authority="premisEventType" deaccession authorityURI= decompression "http://id.loc.gov/vocabulary/preservation/eventType.html" decryption valueURI= deletion "http://id.loc.gov/vocabulary/preservation/eventType/val.html digital signature validation eventDateTime: 2014-07-03T23:18:19 fixity check eventDetailInformation: ingestion eventDetail: program="Jhove"; version="1.5" message digest eventOutcomeInformation: calculation eventOutcome: fail migration normalization eventOutcomeDetail: replication eventOutcomeDetailNote: validation format="JPEG"; result="Not 6 November 201 Rebecca Guenther PREMIS version="1.02"; Implementation Fair 2015 virus

check 18 well-formed PREMIS: From V2 to V3 Improving PREMIS based on user needs Add preservationLevelType semantic unit Add agentVersion semantic unit minor Add unknown values Add eventDetailInformation semantic unit bonus Add authority for controlled vocabulary Make Intellectual Entity an Object category Make Environments independent Objects major Add physical Objects Update conformance statement 19 Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Make Intellectual Entity an Object category V2: Assumed to be held in a s

r Rights ide container ifie t nti n e fi e id metadata rs schema s r Object ifie t No Intellectual n Representation id e Agent Entity File Bitstream semantic units rs e i ide f i nt ntif Exception: e d

iers i Event identifier to enable linking to a description A set of content that is considered a single intellectual unit for PREMIS purposes of management and description Objects link to For example, a particular book, map, photograph, or database. it. Intellectual Entity 20 Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Make Intellectual Entity an Object category iers f i t n ide rs e i f i nt id e

21 Rights ide nti fi e rs Object Intellectual Entity Representation Representation File File Bitstream Bitstream Agent V3: Possibility to ide ntif iers describe Event preservation aspects of intellectual entities Same semantic units as Representation Rebecca Guenther PREMIS Implementation Fair 2015 s 6 November 201 rs e i

f i nt e d i Changes in version 3: Make Intellectual Entity an Object category Relate to PREMIS Events and RightsStatements. Support structural and derivative relationships with other IE Objects. Represent an aggregate, such as a collection, FRBR work, FRBR expression, fonds or series. Capture versioning information and metadata update events at the Intellectual Entity level Associate business requirements with them. 22 Significant characteristics, risk definitions, guidelines for preservation actions, etc.. Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Make Intellectual Entity an Object category Intellectual

Entity Representation File Like before, an intellectual entity can be represented as a An intellectualAn Intellectual representation, or entity Object Entity may have directly as a single file relates to otherone or more or a single bitstream, Objects through digital skipping the a relationship.representations. intermediate Object types. Intellectual Entity relationshipType: structural relationshipSubType: represents Bitstream Representation 23 Rebecca Guenther PREMIS Implementation Fair 2015 File 6 November 201 Changes in version 3:

Make Environments independent Objects 24 What is needed to render or use an object Operating system Application software Hardware Computing resources A high-level data model Described as Intellectual Entities Preserved as Representation, File, Bitstream May be aggregate environment or individual components Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Example: Environment stack and dependency relationships Modularised environment aggregates as a network Registry 2Hardware Re-usable and distributed architectur environment descriptions across different Objects e across repositories and registries Registry 1 Repository Software

applicati on File File1 25 Operatin g system Hardware periphera l Repository Software driver Software library relationshipType: dependency File 2 relationshipSubType: requires Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Data Model in PREMIS V2 Intellectual Entity iers f i t n ide

iers f i t n id e 26 Object (including Environment semantic unit container) i den t if ie rs Environment Rights ide nti fi e rs Agent Event ide f ie nti rs Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201

Data Model in PREMIS V3 iers f i t n ide iers f i t n ide Object 27 ide nti fi e rs identifiers Environment ide ntif Rights iers Event Agent

ide f ie nti rs Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes: Expanded relationship types for environment Objects Dependency Requires, is required by Is deployed on Derivation Is source of, has source Reference Replacements

Logical 28 generalises, is generalised by Supercedes, is superceded by Structural Documents, is documented in Includes, is included in Represents, is represented as Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Semantic units only applicable to environment Intellectual Entities 1.9 environmentFunction

1.10 environmentDesignation environmentName environmentVersion environmentOrigin environmentDesignationNote environmentDesignationExtension 1.11 environmentRegistry environmentFunctionType environmentFunctionLevel environmentRegistryName environmentRegistryKey environmentRegistryRole objectIdentifier objectIdentifierType: ARK objectIdentifierValue: ark:/9999/b1 objectCategory: intellectual entity environmentFunction

environmentFunctionType: software environmentFunctionLevel: 1 environmentFunction environmentFunctionType: operating system environmentFunctionLevel: 2 XP Professional, Service Pack 3 1.12 environmentExtension 1.13 relationship relatedEnvironmentPurpose relatedEnvironmentCharacteristic 29 Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Semantic units only applicable to environment Intellectual Entities 1.9 environmentFunction 1.10 environmentDesignation

environmentName environmentVersion environmentOrigin environmentDesignationNote environmentDesignationExtension 1.11 environmentRegistry environmentFunctionType environmentFunctionLevel environmentRegistryName environmentRegistryKey environmentRegistryRole 1.12 environmentExtension 1.13 relationship objectCategory: intellectual entity environmentFunction environmentFunctionType: software environmentFunctionLevel: 1 environmentFunction environmentFunctionType: operating system environmentFunctionLevel: 2 environmentDesignation

environmentName: Windows XP Professional environmentVersion: Service Pack 3 environmentDesignationNote: maintenance deadline: 2014-04 relatedEnvironmentPurpose relatedEnvironmentCharacteristic 30 Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Semantic units only applicable to environment Intellectual Entities 1.9 environmentFunction 1.10 environmentDesignation environmentRegistryName

environmentRegistryKey environmentRegistryRole 1.12 environmentExtension 1.13 relationship 31 environmentName environmentVersion environmentOrigin environmentDesignationNote environmentDesignationExtension 1.11 environmentRegistry environmentFunctionType environmentFunctionLevel objectCategory: intellectual entity environmentFunction environmentFunctionType: software environmentFunctionLevel: 1 environmentFunction environmentFunctionType: operating system environmentFunctionLevel: 2 environmentDesignation environmentName: Windows XP Professional environmentVersion: Service Pack 3 environmentRegistry environmentRegistryName: PRONOM environmentRegistryKey: x-sfw/8

environmentRegistryRole: identity relatedEnvironmentPurpose relatedEnvironmentCharacteristic Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Semantic units only applicable to environment Intellectual Entities 1.9 environmentFunction environmentRegistryName environmentRegistryKey environmentRegistryRole 1.12 environmentExtension 1.13 relationship 32 environmentName environmentVersion

environmentOrigin environmentDesignationNote environmentDesignationExtension 1.11 environmentRegistry Alternative: Link to an external registry 1.10 environmentDesignation environmentFunctionType environmentFunctionLevel relatedEnvironmentPurpose relatedEnvironmentCharacteristic x-sfw/8 Description of Windows XP Professional in PRONOM relationshipType: dependency relationshipSubType: requires relatedEnvironmentPurpose: render relatedEnvironmentCharacteristic: recommended relatedObjectIdentifier relatedObjectIdentifierType: PUID relatedObjectIdentifierValue: x-sfw/8 Content Object Rebecca Guenther PREMIS Implementation Fair 2015

6 November 201 Semantic units only applicable to environment Intellectual Entities 1.9 environmentFunction 1.10 environmentDesignation 33 environmentFunctionType environmentFunctionLevel environmentName environmentVersion environmentOrigin environmentDesignationNote environmentDesignationExtension 1.11 environmentRegistry environmentRegistryName environmentRegistryKey environmentRegistryRole 1.12 environmentExtension

1.13 relationship relatedEnvironmentPurpose relatedEnvironmentCharacteristic Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 1.9 environmentFunction environmentFunctionType environmentFunctionLevel objectCategory: intellectual entity 1.10 environmentDesignation environmentFunction environmentName environmentFunctionType: software application environmentVersion environmentOrigin 1.6 BlueGriffon environmentDesignationNote environmentDesignationExtension 1.11 environmentRegistry Firefox 10.0 relationshipType: dependency relationshipSubType: requires

relatedEnvironmentPurpose render relatedEnvironmentCharacteristic: known work environmentRegistryName environmentRegistryKey environmentRegistryRole relationshipType: dependency relationshipSubType : requires create 1.12 environmentExtension relatedEnvironmentPurpose: 1.13 relationship objectCategory: intellectual entity environmentFunction environmentFunctionType: software application relatedEnvironmentPurpose relatedEnvironmentCharacteristic 34 Content Object formatName: text/ html 6 November 201 Changes in version 3:

Add physical Objects A physical Object is 35 A content Object, such as a manuscript, or printed document An environment Object, such as a physical hardware device. Representation: A digital or physical Object Either one instantiates or embodies an Intellectual Entity Digital and non-digital Objects can be captured uniformly. Physical Objects can relate to digital Objects and other physical Objects. In V3 storage is applicable to Representations. For physical Representations: the physical location, e.g. a shelf location. Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Changes in version 3: Add physical Objects objectIdentifier objectIdentifierType: ARK objectIdentifierValue::ark:/12148/cb3736 7035f objectCategory: intellectual entity relationshipType: structural relationshipSubType: is represented

as objectIdentifier objectIdentifierType: ARK objectIdentifierValue: [Physical representatio n] 36 ark:/9999/h1.version1 relationshipType: derivation objectCategory: file relationshipSubType: has source format relatedObjectIdentifier relatedObjectIdentifierType: Internal formatDesignation formatName: image/tiff call number formatVersion: 6.0 relatedObjectIdentifierValue: Rs. Ye3535 Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 PREMIS: From V2 to V3 Improving PREMIS based on user needs Add preservationLevelType semantic unit Add agentVersion semantic unit minor Add unknown values Add eventDetailInformation semantic unit bonus Add authority for controlled vocabulary Make Intellectual Entity an Object category Make Environments independent Objects major Add physical Objects http://www.loc.gov/standards/pr

Update conformance statement 37 emis/premis-conformance-2015 0429.pdf Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201 Implementing version 3 38 Finalize XML schema (draft under review) Revise RDF ontology Revise PREMIS in METS guidelines Add and revise controlled vocabularies at http://id.loc.gov Implement in preservation repository systems Experiment Collaborate to compile best practices Rebecca Guenther PREMIS Implementation Fair 2015 6 November 201

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