How to kill, remove or not initialize the SQL Server master database?

Question

I woke up in the morning and gave a "Run" on top of the bank "cotacao", bank that I am working at the moment. Then came the login screen and when I logei the bank that received the tables was the master and not the "cotacao". At the provider that hosts my site and bank, it does not enter. When I soon, it is always my bank.

Can I do this on my machine? Choose a default bank and it will always be the one that will appear when I log in. How do I do this?

Answer 1

If you have privilege you can do this:

ALTER LOGIN pnet WITH DEFAULT_DATABASE = meudb

I put in the Github for future reference.