ForeignKey
CDIFDataStructure::Classes::ForeignKey
Definition
Documentation
Original
Reference
cdi:ForeignKey
Definition
Definition
Role of a set of data structure components for content referencing purposes
Explanatory notes
Equivalent to foreign key in the relational model. It can be used in conjunction with primary key to link data structures and their related data sets.
CDIF
Definition
Role of a set of data structure components for content referencing purposes
Scope
Role of a set of cdi:RepresentedVariables for content referencing. cdi:isComposedOf is a list of RepresentedVariables in this structure; cdi:references is the PrimaryKey in another structure that this foreign key references.
Diagram
Inheritance
No generalization relationships.
Attributes
| Name | Type | Multiplicity | Description |
|---|---|---|---|
| identifier | XsdAnyUri | [0..1] | DocumentationOriginalReferenceschema:identifier DefinitionThe identifier property represents any kind of identifier for any kind of [[Thing]], such as ISBNs, GTIN codes, UUIDs etc. Schema.org provides dedicated properties for representing many of these, either as textual strings or as URL (URI) links. See [background notes](/docs/datamodel.html#identifierBg) for more details. ScopeDomain: Thing (https://schema.org/Thing). Range: PropertyValue (https://schema.org/PropertyValue), Text (https://schema.org/Text), URL (https://schema.org/URL). CDIFDefinitionIdentifier for objects requiring short- or long-lasting referencing and management. Scope@id - resolvable URI for this foreign key. |
Associations
| Role | Target | Multiplicity | Kind |
|---|---|---|---|
| hasForeignKey | ← DataStructure | [0..*] | composition |
| hasForeignKey | ← DimensionalDataStructure | [0..*] | composition |
| hasForeignKey | ← WideDataStructure | [0..*] | composition |
| isComposedOf | → RepresentedVariable | [1..*] | association |
| references | → PrimaryKey | [0..1] | association |