ESciDoc Item Container Version History

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Concepts[edit]

See Item, Container Specs&APIs here

Container Handler[edit]

Containers offer the concept of aggregation, i.e. they can contain other (simple and complex) objects. Each container includes a structural map, which manages references to all members of the aggregation. Containers are versionable. They can be associated with a persistent identifier. Containers have a built-in basic object lifecycle. The status of a Container within its object lifecycle influences which actions are applicable and which user privileges are to be evaluated.

Item Handler[edit]

Items are objects representing the actual content of the repository. An item is a simple or complex object like an article, a report or a translation. Items are versionable. They can be associated with a persistent identifier. Items have a built-in basic object lifecycle. The status of an Item within its object lifecycle influences which actions are applicable and which user privileges are to be evaluated.

Premis Event Entity[edit]

The Event entity aggregates information about an action that involves one or more Object entities. Metadata about an Event would normally be recorded and stored separately from the digital object.

Whether or not a preservation repository records an Event depends upon the importance of the event. Actions that modify objects should always be recorded. Other actions such as copying an object for backup purposes may be recorded in system logs or an audit trail but not necessarily in an Event entity. Mandatory semantic units are: eventIdentifier, eventType, and eventDateTime.

This is a hierarchical listing of the semantic units included in the Data Dictionary. The information in parentheses following each semantic unit indicates whether the element is Mandatory (M) or Optional (O), followed by whether it is Repeatable (R), Not repeatable (NR) or Attribute (A).

V1.0[edit]

  1. eventIdentifier (M, NR)
    1. eventIdentifierType (M, NR)
    2. eventIdentifierValue (M, NR)
  2. eventType (M, NR)
  3. eventDateTime (M, NR)
  4. eventDetail (O, NR)
  5. eventOutcomeInformation (O, R)
    1. eventOutcome (O, NR)
    2. eventOutcomeDetail (O, R)
  6. linkingAgentIdentifier (O, R)
    1. linkingAgentIdentifierType (M, NR)
    2. linkingAgentIdentifierValue (M, NR)
    3. linkingAgentRole (O, R)
    4. linkingAgentXmlID (O, A)
  7. linkingObjectIdentifier (O, R)
    1. linkingObjectIdentifierType (M, NR)
    2. linkingObjectIdentifierValue (M, NR)
    3. linkingObjectXmlID (O, A)
  8. xmlID (M, A)

V2.0[edit]

  1. eventIdentifier (M, NR)
    1. eventIdentifierType (M, NR)
    2. eventIdentifierValue (M, NR)
  2. eventType (M, NR)
  3. eventDateTime (M, NR)
  4. eventDetail (O, NR)
  5. eventOutcomeInformation (O, R)
    1. eventOutcome (O, NR)
    2. eventOutcomeDetail (O, R)
      1. eventOutcomeDetailNote (O, NR)
      2. eventOutcomeDetailExtension (O, NR)
  6. linkingAgentIdentifier (O, R)
    1. linkingAgentIdentifierType (M, NR)
    2. linkingAgentIdentifierValue (M, NR)
    3. linkingAgentRole (O, R)
    4. LinkAgentXmlID (O, A)
  7. linkingObjectIdentifier (O, R)
    1. linkingObjectIdentifierType (M, NR)
    2. linkingObjectIdentifierValue (M, NR)
    3. linkingObjectRole (O, R)
    4. LinkObjectXmlID (O, A)
  8. xmlID (M, A)

Changes v1.0=>v2.0[edit]

  • Complete schema in one file instead of separate files.
  • Added elements:
    • eventOutcomeDetailNote (O, NR)
    • eventOutcomeDetailExtension (O, NR)
    • linkingObjectRole (O, R)

PREMIS data dictionary[edit]

Semantic unit 2.1 eventIdentifier
Semantic
components 		2.1.1 eventIdentifierType
2.1.2 eventIdentifierValue
Definition A designation used to uniquely identify the event within the

preservation repository system.

Rationale Each event recorded by the preservation archive must have a unique

identifier to allow it to be related to objects, agents, and other events.

Data constraint Container
Repeatability Not repeatable
Obligation Mandatory
Creation /
Maintenance notes 		The eventIdentifier is likely to be system generated. There is no

global scheme or standard for these identifiers. The identifier is therefore not repeatable.

eSciDoc Each event recorded by the preservation archive must have a unique

identifier to allow it to be related to objects, agents, and other events.


Semantic unit 2.1.1 eventIdentifierType
Semantic
components 		None
Definition A designation of the domain within which the event identifier is unique.

ifier to allow it to be related to objects, agents, and other events.

Data constraint None
Examples FDA
Stanford Repository Event ID
UUID
Repeatability Not repeatable
Obligation Mandatory
Creation /
Maintenance notes 		For most preservation repositories, the eventIdentifierType will be its

own internal numbering system. It can be implicit within the system and provided explicitly only if the data is exported.

eSciDoc
Semantic unit 2.1.2 eventIdentifierValue
Semantic
components 		None
Definition The value of the 2.1 eventIdentifier
Data constraint None
Examples [a binary integer]
E-2004-11-13-000119
58f202ac-22cf-11d1-b12d-002035b29092
Repeatability Not repeatable
Obligation Mandatory
eSciDoc

Links[edit]

Examples[edit]

Preservation Metadata: Implementation Strategies

Enhanced Scientific Documentation

Identifier

Error Management and Project Management Software

Application Programming Interface

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