Database connection with web matrix

I am using web matrix to install the latest version , unfortunately via webmatrix the database is not configured by default so where is the path or script I shall run to configure it with the default sql database ?

Is this a first time install? Did you just download/extract the 2.50 no-source version into a folder?

Not sure what you mean by "default database".  You need to have some form of SQL Server installed - e.g. SQL Server Express.  Web Matrix does come with SQL Server Compact.  If you want to want to use that, then during install, choose "Use built-in data storage (SQL Server compact)

See Installing nopCommerce