title: What does a dashed / dotted relationship line represent in SQL Management Studio - Database Diagram
body: <p>I'm looking at an existing database in Microsoft SQL Server Management Studio, and in the Database Diagram there is one relatioship that appears with a dashed or dotted line.  The other relationships are all solid lines.  What does the dashed line mean?</p>
  
  <p><img src="https://i.stack.imgur.com/DsQsv.png" alt="enter image description here"></p>