Allow placing a lien on a cloud SQL database
When you use tools like Terraform, one could imagine that due to a bug or error, a cloud sql database instance is removed.
One way to prevent this from happening is to introduce liens for cloud SQL. That way Terraform's plan would suggest removing the cloud database, but the operation would simply fail because of the lien.
Liens are now active on both project level, and compute instance level. I think applying this same concept to cloud SQL should not be too difficult and would really help.