Renaming a database from portal.azure.com is the feature that was missing from the very beginning of the cloud service.
The task can be accomplished in few seconds, with a single line of TSQL if you open your database with SQL Management Studio or, even more quickly, if you use the "Query editor" blade from the portal.
![](https://www.peppedotnet.it/content/images/2019/08/sqlazure-rename-database.png)
This is the line of TSQL code you have to run in the command line:
ALTER DATABASE [servername/databasename] MODIFY NAME = [servername/newdatabasename]
And... boom! After few seconds your database will be renamed.
There's nothing more simple :)