What does a dashed / dotted relationship line represent in SQL Management Studio - Database Diagram
问题 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? 回答1: The dotted/dashed line means, that SQL Server does not enforce referential integrity for this relationship. Have a look here 回答2: referential integrity is not enforced 来源: https://stackoverflow.com/questions/9347917/what-does-a-dashed