# relation Type keys

We highly recommend to use whenever possible **Contains** as relation Type.

<figure><img src="https://111806075-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Mg4otljWU9FsHKYhTsW%2Fuploads%2FXp0YB1MRELFbjRiwrSeQ%2Fimage.png?alt=media&#x26;token=f601ae44-5373-48c7-82d7-da1027c762f9" alt=""><figcaption></figcaption></figure>
