appwrite/docs/examples/1.5.x/server-deno/examples/databases/create-relationship-attribute.md

import { Client, Databases, RelationshipType, RelationMutate } from "https://deno.land/x/appwrite/mod.ts";

const client = new Client() .setEndpoint('https://cloud.appwrite.io/v1') // Your API Endpoint .setProject('5df5acd0d48c2') // Your project ID .setKey('919c2d18fb5d4...a2ae413da83346ad2'); // Your secret API key

const databases = new Databases(client);

const response = await databases.createRelationshipAttribute( '<DATABASE_ID>', // databaseId '<COLLECTION_ID>', // collectionId '<RELATED_COLLECTION_ID>', // relatedCollectionId RelationshipType.OneToOne, // type false, // twoWay (optional) '', // key (optional) '', // twoWayKey (optional) RelationMutate.Cascade // onDelete (optional) );