PhysicalLayoutRelationStructure¶
Generalization is Identifiable.
Superclass hierarchy
Definition¶
Realization of relation structure that is used to describe the sequence of value mappings in a physical layout.
Examples¶
The W3C Tabular Data on the Web specification allows for a list datatype.
In the example below there are three top level InstanceVariables:
PersonID – the person identifier;
AgeYr – age in year;
BpSys_Dia – blood pressure (a list containing Systolic and Diastolic values).
There are two variables at a secondary level of the hierarchy:
Systolic – the systolic pressure;
Diastolic – the diastolic pressure.
The delimited file below uses the comma to separate “columns” and forward slash to separate elements of a blood pressure list.
PersonID, AgeYr, BpSys_Dia
1,22,119/67
2,68,122/70
The PhysicalRelationStructure in this case would describe a BpSys_Dia list variable as containing an ordered sequence of the Systolic and Diastolic InstanceVariables.
Explanatory notes¶
This can be more complex than a simple sequence.
Subclasses¶
Properties¶
Name |
Description |
Data Type |
Multi- plicity |
---|---|---|---|
criteria
|
Intensional definition of the order criteria (e.g. alphabetical, numerical, increasing, decreasing, etc.). |
0..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. |
0..* |
|
purpose
|
An explanation of the purpose of the layout relation structure. |
0..1 |
|
semantics
|
Provides semantic context for the relationship. |
0..1 |
|
specification
|
0..1 |
||
totality
|
Type of relation in terms of totality with respect to an associated collection. |
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..* |
PhysicalLayoutRelationStructure_structures_PhysicalSegmentLayout |
0..1 |
|
0..* |
PhysicalLayoutRelationStructure_has_ValueMappingRelationship |
1..1 |
TBD
Diagram¶
TBD