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
namefrom PhysicalDataSetA 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.
0..1
numberOfSegmentsfrom PhysicalDataSetThe number of segments in a PhysicalDataSet.
:ref:``
0..1
overviewfrom PhysicalDataSetShort 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.
0..1
physicalFileNamefrom PhysicalDataSetUse when multiple physical segments are stored in a single file.
:ref:``
0..1
purposefrom PhysicalDataSetAn explanation of the purpose of the physical dataset.
0..1
Inherited Properties¶
Name |
Description |
Data Type |
Multi- plicity |
---|---|---|---|
agency
from Identifiable
|
Agency expressed as filed with the DDI Agency ID registry [registry.ddialliance.org] with optional additional sub-agency extensions. |
:ref:`` |
1..1 |
id
from Identifiable
|
ID conforming to the allowed structure of the DDI Identifier and must be unique within the Agency. |
:ref:`` |
1..1 |
isPersistent
from Identifiable
|
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
from Identifiable
|
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
from Identifiable
|
Locally used identifier unique with a specified context, such as a variable name within a dataset. |
0..* |
|
version
from Identifiable
|
Version number of the object. |
:ref:`` |
1..1 |
versionDate
from Identifiable
|
Date and time the object was changed expressed in standard ISO formats. |
0..1 |
|
versionRationale
from Identifiable
|
Reason for making a new version of the object. |
0..1 |
|
versionResponsibility
from Identifiable
|
Contributor who has the ownership and responsibility for the current version. |
:ref:`` |
0..1 |
Associations¶
Multiplicity |
Association |
Navigable Class |
Multiplicity |
---|---|---|---|
0..* |
PhysicalDataSet_isDefinedBy_Concept |
0..* |
|
0..* |
PhysicalDataSet_formats_DataStore |
0..* |
|
0..* |
PhysicalDataSet_has_PhysicalRecordSegment |
0..* |
|
0..* |
PhysicalDataSet_has_PhysicalRecordSegmentPosition |
1..1 |
TBD
Diagram¶
TBD