Varsha,
Studio uses a database hosted in the cloud. Studio Pro uses a database on your local machine. They are different databases. If you want to, you can download the database from the cloud to use on your local machine. Directions to do that can be found here: https://docs.mendix.com/howto/data-models/migrating-your-mendix-database#5-1-importing-into-an-on-premises-postgresql-database
Hope that helps,
Mike