System database is vital part of Jedox modeler. It contains all information of users, groups, roles and their interactions in cubes. By default, it is visible by every user with modeler rights.
In some environments admin user do not want to make this database visible.
In _GROUP_DATABASE_DATA cube is not possible to choose System database, since this cube is in fact in this database and therefor not possible to put N on the group.
Workaround will be to play with the Roles for a bit.
Usecase is that user should see Modeler, some Databases inside, but not the System.
That we can achieve by doing this rule rights:
Modeler is Full Access or Read and Rights is no access.
Now, when our role is active and updated we should see modeler like this: