PhysicalDataSet

Generalization is AnnotatedIdentifiable.

Superclass hierarchy

Definition

Information needed for understanding the physical structure of data coming from a file or other source.

Examples

The PhysicalDataSet is the entry point for information about a file or other source. It includes information about the name of a file, the structure of segments in a file.

Explanatory notes

Multiple styles of structural description are supported: including describing files as unit-record (UnitSegmentLayout) files; describing cubes; and describing event-history (spell) data.


Subclasses


Properties

When duplicates is false, then every Member is unique in the Collection. In this case, the Collection is a Set.

  • :ref:``

  • 1..1

    • name
    • A linguistic signifier. Human understandable name (word, phrase, or mnemonic) that reflects the ISO/IEC 11179-5 naming principles. If more than one name is provided then a context to differentiate usage must be provided as well.

    • ObjectName

    • 0..1

    • numberOfSegments
    • The number of segments in a PhysicalDataSet.

    • :ref:``

    • 0..1

    • overview
    • Short natural language account of the information obtained from the combination of properties and relationships associated with an object. Supports the use of multiple languages and structured text.

    • InternationalStructuredString

    • 0..1

    • physicalFileName
    • Use when multiple physical segments are stored in a single file.

    • :ref:``

    • 0..1

Inherited Properties

Name

Description

Data Type

Multi- plicity

agency

Agency expressed as filed with the DDI Agency ID registry [registry.ddialliance.org] with optional additional sub-agency extensions.

:ref:``

1..1

id

ID conforming to the allowed structure of the DDI Identifier and must be unique within the Agency.

:ref:``

1..1

isPersistent

Default value is false indicating that the content of the current version may change (may be in development mode). Set to true when the content of this version will no longer change.

:ref:``

1..1

isUniversallyUnique

Default value is false. If the id of the object was created as a Universally Unique ID (UUID) set to true.

:ref:``

1..1

localId

Locally used identifier unique with a specified context, such as a variable name within a dataset.

LocalIdFormat

0..*

version

Version number of the object.

:ref:``

1..1

versionDate

Date and time the object was changed expressed in standard ISO formats.

XSDdate

0..1

versionRationale

Reason for making a new version of the object.

RationaleDefinition

0..1

versionResponsibility

Contributor who has the ownership and responsibility for the current version.

:ref:``

0..1

Associations

Multiplicity

Association

Navigable Class

Multiplicity

0..*

PhysicalDataSet_isDefinedBy_Concept

Concept

0..*

0..*

PhysicalDataSet_formats_DataStore

DataStore

0..*

0..*

PhysicalDataSet_has_PhysicalRecordSegment

PhysicalDataSet

0..*

0..*

PhysicalDataSet_has_PhysicalRecordSegmentPosition

PhysicalDataSet

1..1

TBD

Diagram

TBD