Multiple delete

How can i delete all info from my northwind database? I want it empty.
sorry for my English… Not Native

You could only do this by deleting every single transaction, customer, supplier, etc. And you cannot delete things that are already referenced by other transactions.

If you want an empty database, just use the New… button on the home page. You will get a default business with essential tabs and a few sample accounts. The accounts will be empty and can be renamed or deleted.