Web Forms :: Table Download - How To Connect To Database

This is Table Download in database

Id
DownLoadTitle
Url
DownloadToken
ExpiryDate
Hits
ExpireAfterDownload
Downloaded

and below is code that connect to this database

string downloadtoken = Page.RouteData.Values["downloadtoken"].ToString();
DownloadsDbEntities db = new DownloadsDbEntities();
var data = from d in db.Downloads
where d.DownloadToken == downloadtoken
select d;
Download obj = data.SingleOrDefault();

[Code] ....

But in above code I don't know how it call table from database I never seen this kind of code it doesn't connect to database

I want above code but connect to sql and read table Download from database in sql server. How I can do it?