--- schema_version: "1" id: a265864a9f7265c283aa1d5a15c2a115d18425a45ddec68a67e43ce3f8861c0b title: RelationshipDomain collection: legacydeveloper version: current locale: en-us portal_url: https://docs.salesforce.com/legacydeveloper/current/en-us/api_tooling/tooling_api_objects_relationshipdomain.md canonical_url: https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_relationshipdomain.htm source_site: developer.salesforce.com content_type: documentation content_hash: da274e5ed7283aa755b24aa93bf4ec37747efef69b495fb39e9726ff1d467c68 description: Represents the relationship an object has with other objects. RelationshipDomain allows you to write simpler queries. For example, “which objects are the child objects for the object defined in ParentSobject” is easier using RelationshipDomain. Available in Tooling API version 34.0 and later. --- # RelationshipDomain Represents the relationship an object has with other objects. RelationshipDomain allows you to write simpler queries. For example, “which objects are the child objects for the object defined in ParentSobject” is easier using RelationshipDomain. Available in Tooling API version 34.0 and later. ## Supported SOAP Calls query() ## Supported REST HTTP Methods GET ## Limitations [SOQL Limitations](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/reference_objects_soql_limits.htm "Some Tooling API objects have SOQL limitations. These limitations apply to any Metadata Catalog query, which applies to all Custom Metadata Types and Metadata Catalog entities, not only the ones explicitly listed.") [SOSL Limitations](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/reference_objects_sosl_limits.htm "Two Tooling API objects, EntityDefinition and FieldDefinition, have some SOSL limitations. ExternalString and MetadataComponentDependency (Beta) don’t support SOSL searches.") ## Fields | Field | Details | | --- | --- | | ChildSobject | Type [EntityDefinition](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_entitydefinition.htm "Provides row-based access to metadata about standard and custom objects.") Properties Filter, Group, Sort Description Metadata for the child object, if any. | | ChildSobjectId | Type string Properties Filter, Group, Nillable, Sort Description ID of the ChildSobject. | | DurableId | Type string Properties Filter, Group, Nillable, Sort Description Unique identifier for the field. Always retrieve this value before using it, as the value isn’t guaranteed to stay the same from one release to the next. To simplify queries, use this field. | | Field | Type [FieldDefinition](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_fielddefinition.htm "Represents a standard or custom field, providing row-based access to field metadata. Contrast FieldDefinition with EntityParticle, which represents each element of a field that can be presented in a user interface. FieldDefinition has parity with metadata type Field.") Properties Filter, Group, Sort Description The relationship field on this object that defines the relationship to ChildSobject or ParentSobject. | | FieldId | Type string Properties Filter, Group, Nillable, Sort Description ID of Field. | | IsCascadeDelete | Type boolean Properties Defaulted on create, Filter, Group, Sort Description If true, this object’s parent can’t be deleted until all records for this object are deleted. Corresponds to Cascade value for DeleteConstraint in the Metadata API. | | IsDeprecatedAndHidden | Type boolean Properties Defaulted on create, Filter, Group, Sort Description If true, this object is unavailable for the current version. | | IsRestrictedDelete | Type boolean Properties Defaulted on create, Filter, Group, Sort Description If true, this object can’t be deleted. Corresponds to Restrict value for DeleteConstraint in the Metadata API. | | JunctionIdListNames | Type complexvalue Properties Nillable Description The names of the lists of junction IDs associated with an object. Each ID represents an object that has a relationship with the associated object. | | ParentSobject | Type [EntityDefinition](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_entitydefinition.htm "Provides row-based access to metadata about standard and custom objects.") Properties Filter, Group, Sort Description Metadata for the parent object, if any. | | ParentSobjectId | Type string Properties Filter, Group, Nillable, Sort Description ID of the ParentSobject. | | RelationshipInfo | Type [RelationshipInfo](https://developer.salesforce.com/docs/atlas.en-us.api_tooling.meta/api_tooling/tooling_api_objects_relationshipinfo.htm "Represents the properties of a relationship between objects. Simplify queries with RelationshipInfo, such as answering the question “which objects are parent objects for the object defined in ChildSobject. Available in Tooling API version 34.0 and later.") Properties Filter, Group, Sort Description Properties about the relationship. | | RelationshipInfoId | Type string Properties Filter, Group, Nillable, Sort Description ID of RelationshipInfo for this relationship domain. | | RelationshipName | Type string Properties Filter, Group, Nillable, Sort Description Name of this relationship. |