Aug 06, 2019 10:50 AM|PatriceSc|LINK
You downloaded that from where ? Having a quick at https://code.msdn.microsoft.com/Getting-Started-with-221c01f5 db files are found in the App_Data folder (mdf and ldf files) and
the web.config file uses SqlLocalDb 2012.
Could ie be that you need to change the connection string tio match the installed db engine (or to install one if not done already). Or you really don't see any mdf or ldf file in the download you used ?