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Relationship Class properties

Zusammenfassung

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".

Eigenschaften

Eigenschaft Erläuterung Datentyp

backwardPathLabel

(Schreibgeschützt)

The backward path label for the relationship class.

String

cardinality

(Schreibgeschützt)

The cardinality for the relationship class.

  • OneToOne

  • OneToMany

  • ManyToMany

String

classKey

(Schreibgeschützt)

Class key used for the relationship class.

  • Undefined

  • ClassID

  • ClassCode

String

destinationClassKeys

(Schreibgeschützt)

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

tuple

destinationClassNames

(Schreibgeschützt)

A list containing the names of the destination classes.

String

forwardPathLabel

(Schreibgeschützt)

The forward path label for the relationship class.

String

isAttachmentRelationship

(Schreibgeschützt)

Indicates whether the relationship class represents a table attachment.

Boolean

isAttributed

(Schreibgeschützt)

Indicates whether the relationships in this relationship class have attributes.

Boolean

isComposite

(Schreibgeschützt)

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

Boolean

isReflexive

(Schreibgeschützt)

Indicates whether the origin and destination sets intersect.

Boolean

keyType

(Schreibgeschützt)

Key type for the relationship class.

  • Single

  • Dual

String

notification

(Schreibgeschützt)

The notification direction for the relationship class.

  • None

  • Forward

  • Backward

  • Both

String

originClassNames

(Schreibgeschützt)

A list containing the names of the origin classes.

String

originClassKeys

(Schreibgeschützt)

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

tuple

relationshipRules

(Schreibgeschützt)

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

Object

splitPolicy

(Schreibgeschützt)

The split policy that is set for the relationship class.

  • DuplicateRelatedObjects

  • UseDefault

String

Codebeispiel

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))