Creates a new Timestream database. If the KMS key is not specified, the database will be encrypted with a Timestream managed KMS key located in your account. For more information, see <a href="https://docs.aws.amazon.com/kms/latest/developerguide/concepts.html#aws-managed-cmk">Amazon Web Services managed keys</a>. <a href="https://docs.aws.amazon.com/timestream/latest/developerguide/ts-limits.html">Service quotas apply</a>. For details, see <a href="https://docs.aws.amazon.com/timestream/latest/developerguide/code-samples.create-db.html">code sample</a>.