Remove data

You should clean up your forest databases, as described here, unless you are done with all analyses and ready to delete the entire database (then use the SQL Server Management Studio).

Since result databases are created by the system (storing results from simulations and optimizations), the simple solution is to delete the database and create a new one. Partial removal of results is done in PlanWise and can be of interest, e.g., when data from analyses within the same project should be saved in the same database (and, when using SQL Server Express, maximum size of a database is limited to 4 GB).