I'm using the standard Database Model Diagram template in Visio 2007.
When I try to connect two entities, the line is a "one and only one" type. I need a "zero or more" type, but no amount of line editing will change the line.
Is this a bug? The Visio help does not describe how to do this and the MS website turns up no results for 2007 (plenty for 2003, but the menu options it refers to are not in 2007).