

With this fix, SSMS 18.6 can open and save a diagram created by SSMS 17.9.1 and prior as well as by other SSMS 18.6 instances. If you created or saved a diagram using SSMS 18.0 through 18.5.1, and that diagram includes a Text Annotation, you won’t be able to open that diagram in any version of SSMS.

In addition to being able to label relationships and display differing levels of details about each table, general text annotations can be leveraged for additional commentary. When using database diagrams for describing existing databases, there are additional tools to assist. For creating tables, database diagrams facilitate specifying column names and data types as well as visually linking tables with foreign keys and other relationships. This tool is helpful in both creating tables as well as describing existing structures.
