I have a database on SQL Azure and want to create a database diagram for that, but don't want to have to install SQL server and copy the database etc. Is there any way that I can do it that anyone knows of?
UPDATE: the database diagram feature
Deprecated and removed features in 18.0 (GA) ... Database Diagrams https://docs.microsoft.com/en-us/sql/ssms/release-notes-ssms
The feature was also removed from Visual Studio 2019 SSDT.
The latest version of SSMS (as of v16) supports creating database diagrams for Azure SQL databases. You can download it here:
SQL Azure databases do not support diagrams in the same way 'normal' on premise SQL Servers do, so you are looking at workarounds or third-party tools. For example, you could install SQL Server Data Tools (SSDT), pull your model down, deploy to a local 'normal' dev server, create the diagram there. This would not involve much data so would be lightweight. Alternately use Viso, Powerpoint, dbForge, Erwin, RedGate, Apex ... paper and pencil etc : )
In summary, the tooling hasn't quite caught up but you have a few options.