[Home](./index.md) > [@datashaper/schema](./schema.md) > [RelationshipConstraint](./schema.relationshipconstraint.md) ## RelationshipConstraint interface Signature: ```typescript export interface RelationshipConstraint ``` ## Properties | Property | Modifiers | Type | Description | | --- | --- | --- | --- | | [accepts](./schema.relationshipconstraint.accepts.md) | | [Profile](./schema.profile.md)\[\] | The kinds of profiles that are accepted in this relationship | | [description?](./schema.relationshipconstraint.description.md) | | string | (Optional) Description of the named resource. | | [multi?](./schema.relationshipconstraint.multi.md) | | boolean | (Optional) Whether multiple relationships of this kind may be defined on a resource Defaults to false | | [rel](./schema.relationshipconstraint.rel.md) | | string | The relationship definition | | [title?](./schema.relationshipconstraint.title.md) | | string | (Optional) Friendly name of the relationship type. Used for display only. |