Update of CATA DB's

A short question - is it possible to exchange also catalog DB's via Global?

Yes it is. Any Dabacon database can be transferred via Global.

Yes any DB can be exchange via Global.
Using the Update and SYNCHRONISE option Databases at the Hub location and databases at a Satelliite Location will be updated. This is according to which Location has the most up-to-date version.

Thanks for your replay. I changed the MDB by including a new CATA on  satellite and got the error message "(43,41) Unable to open BD ...,  FNF:File not found". I guess you have to copy ALL db's as a first step.  Then the systems starts the update and synchronization.