API Reference > imodeljs-backend > Relationships > ElementRefersToElements ElementRefersToElements Class A Relationship where one Element refers to another Element Extends Relationship Extended by DrawingGraphicRepresentsElement GraphicalElement3dRepresentsElement ElementGroupsMembers PhysicalElementFulfillsFunction ILinearlyLocatedAlongILinearElement ILinearLocationLocatesElement AnalyticalSimulatesSpatialElement Implements EntityProps RelationshipProps Methods Name Description create<T extends ElementRefersToElements>(iModel: IModelDb, sourceId: Id64String, targetId: Id64String): T extends ElementRefersToElements Static Create an instance of the Relationship. insert<T extends ElementRefersToElements>(iModel: IModelDb, sourceId: Id64String, targetId: Id64String): Id64String Static Insert a new instance of the Relationship. Inherited methods Name Inherited from Description buildConcurrencyControlRequest(opcode: DbOpcode): void Relationship Add a request for the locks that would be needed to carry out the specified operation. delete(): void Relationship Delete this Relationship from the iModel. forEachProperty(func: PropertyCallback, includeCustom: boolean = false): void Entity Call a function for each property of this Entity. insert(): Id64String Relationship Insert this Relationship into the iModel. update(): void Relationship Update this Relationship in the iModel. getInstance<T extends Relationship>(iModel: IModelDb, criteria: Id64String | SourceAndTarget): T extends Relationship Static Relationship onDeletedDependency(_props: RelationshipProps, _iModel: IModelDb): void Static Relationship onRootChanged(_props: RelationshipProps, _iModel: IModelDb): void Static Relationship onValidateOutput(_props: RelationshipProps, _iModel: IModelDb): void Static Relationship Inherited properties Name Type Inherited from Description classFullName Accessor ReadOnly string Entity Get the full BIS class name of this Entity in the form "schema:class". classFullName Accessor StaticReadOnly string Entity Get the full BIS class name of this Entity in the form "schema:class" className Accessor ReadOnly string Entity The name of the BIS class associated with this class. id Id64String Entity The Id of this Entity. iModel IModelDb Entity The IModelDb that contains this Entity schema Static undefined Entity The Schema that defines this class. schemaName Accessor ReadOnly string Entity The name of the BIS Schema that defines this class sourceId Id64String Relationship targetId Id64String Relationship Defined in core/backend/src/Relationship.ts Line 79 Last Updated: 13 June, 2024