This is the last step of the model generation wizard.
The Import scripts table contains the list of scripts that should be executed on the database to make it compliant with the entities being created.
Until this point, nothing is created in the project nor even saved to disk. Studio actually generates entities and screens and saves the scripts only when you press Save, Run all scripts or Run script.
You can review and edit the scripts on this page, then run them or just save and run later by a database management tool. The import scripts are saved in the modules/core/db/import
directory.
Successfully executed scripts are marked green.