Before doing that, though, we need to choose which Database engine we would like to use. We’ll take this as an opportunity to demonstrate the versatility of the Code-First approach.
From the main Menu, select View | SQL Server Object Explorer and look through the available development-ready Databases; you should have at least one MSSQLocalDB Database instance under the SQL Server node:
If you have one or more instances of SQL Server and/or SQL Express installed, you will also find a reference for each one of them.
If you have no entries (no SQL Server node), you are most likely missing the SQL Server Data Tools ...