Defined in github.com/aws/aws-sdk-go/service/rds/api.go
The KMS key identifier for an encrypted DB instance.
The KMS key identifier is the Amazon Resource Name (ARN) for the KMS encryption key. If you are creating a DB instance with the same AWS account that owns the KMS encryption key used to encrypt the new DB instance, then you can use the KMS key alias instead of the ARN for the KM encryption key.
If the StorageEncrypted parameter is true, and you do not specify a value for the KmsKeyId parameter, then Amazon RDS will use your default encryption key. AWS KMS creates the default encryption key for your AWS account. Your AWS account has a different default encryption key for each AWS region.