When I drop 2 tables into the visual studio's linqdataclasses context window the tables primary keys (that are associated) get a line between them automatically, how do they get that, like in this picture..
I tried to check how this can be set when designing tables, but the only thing I found was that I could do that by altering tables, isn't is possible to configure this using the sql server management studio?
Chose menu option "Table designer : Relationships"
Select an existing relationship, or press [ADD] to create a new one
Next to "Tables and Column specification" press the [...] button and choose the column(s) from the current table and the Table, and Column(s) from the new corresponding table that you want to make a relationship with.