API Reference > imodeljs-backend > Relationships > Relationship Relationship Class Base class for all link table ECRelationships Extends Entity Extended by ElementRefersToElements ElementDrivesElement Implements EntityProps RelationshipProps Methods Name Description buildConcurrencyControlRequest(opcode: DbOpcode): void Add a request for the locks that would be needed to carry out the specified operation. delete(): void Delete this Relationship from the iModel. insert(): Id64String Insert this Relationship into the iModel. update(): void Update this Relationship in the iModel. getInstance<T extends Relationship>(iModel: IModelDb, criteria: Id64String | SourceAndTarget): T extends Relationship Static onDeletedDependency(_props: RelationshipProps, _iModel: IModelDb): void Static onRootChanged(_props: RelationshipProps, _iModel: IModelDb): void Static onValidateOutput(_props: RelationshipProps, _iModel: IModelDb): void Static Inherited methods Name Inherited from Description forEachProperty(func: PropertyCallback, includeCustom: boolean = false): void Entity Call a function for each property of this Entity. Properties Name Type Description sourceId Id64String targetId Id64String 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 Defined in core/backend/src/Relationship.ts Line 35 Last Updated: 13 June, 2024