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Relationship Class properties

Résumé

The Describe function returns the following properties for relationship classes. The Geodatabase Table, Table, and Dataset property groups are also supported.

For a relationship class, the Describe dataType property returns a value of "RelationshipClass".

Propriétés

Propriété Explication Type de données

backwardPathLabel

(Lecture seule)

The backward path label for the relationship class.

String

cardinality

(Lecture seule)

The cardinality for the relationship class.

  • OneToOne

  • OneToMany

  • ManyToMany

String

classKey

(Lecture seule)

Class key used for the relationship class.

  • Undefined

  • ClassID

  • ClassCode

String

destinationClassKeys

(Lecture seule)

A list of tuples, with the object key name, and key role (DestinationPrimary, DestinationForeign).

tuple

destinationClassNames

(Lecture seule)

A list containing the names of the destination classes.

String

forwardPathLabel

(Lecture seule)

The forward path label for the relationship class.

String

isAttachmentRelationship

(Lecture seule)

Indicates whether the relationship class represents a table attachment.

Boolean

isAttributed

(Lecture seule)

Indicates whether the relationships in this relationship class have attributes.

Boolean

isComposite

(Lecture seule)

Indicates whether the relationship class represents a composite relationship in which the origin object class represents the composite object.

Boolean

isReflexive

(Lecture seule)

Indicates whether the origin and destination sets intersect.

Boolean

keyType

(Lecture seule)

Key type for the relationship class.

  • Single

  • Dual

String

notification

(Lecture seule)

The notification direction for the relationship class.

  • None

  • Forward

  • Backward

  • Both

String

originClassNames

(Lecture seule)

A list containing the names of the origin classes.

String

originClassKeys

(Lecture seule)

A list of tuples, with the object key name, and key role (OriginPrimary, OriginForeign).

tuple

relationshipRules

(Lecture seule)

A list of relationship rule objects that list the properties of the relationship rules that apply to this relationship class.

Object

splitPolicy

(Lecture seule)

The split policy that is set for the relationship class.

  • DuplicateRelatedObjects

  • UseDefault

String

Exemple de code

Relationship class properties example

The following stand-alone script displays properties for a relationship class:

import arcpy

# Create a Describe object
desc = arcpy.Describe("C:/data/moad.gdb/West/bapCompAttRel")

# Print relationship class properties
print("Backward Path Label: {}".format(desc.backwardPathLabel))
print("Cardinality: {}".format(desc.cardinality))
print("Class key: {}".format(desc.classKey))
print("Destination Class Names: {}".format(desc.destinationClassNames))
print("Forward Path Label: {}".format(desc.forwardPathLabel))
print("Is Attributed: {}".format(desc.isAttributed))
print("Is Composite: {}".format(desc.isComposite))
print("Is Reflexive: {}".format(desc.isReflexive))
print("Key Type: {}".format(desc.keyType))
print("Notification Direction: {}".format(desc.notification))
print("Origin Class Names: {}".format(desc.originClassNames))