Google Cloud Dataprep Documentation Documentation Boolean Data Type The Boolean data type expresses true or false values. Supported Values: true / false True / False yes / no Yes / No y / n Y / N on / off 1 / 0 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 January 23, 2018.