Firebase Interface: DatabaseReference admin.firestore.DatabaseReference interface static This is an alias type. See DatabaseReference for full documentation. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 3.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated March 28, 2018.