Aggregate join index can be loaded incrementally?

Database

Aggregate join index can be loaded incrementally?

Aggregate join index can be loaded incrementally?

Is there a way to insert an incremental new data without  having to fully recharge an aggregate join index ?

For example, if I have a 48 months data fact table  and I have to load  an incremental one , do I have to completely re-create the index or can  I  update the index with the new month without recharging all  months if   data are  not changed?

This could allow a considerable saving of time and processing resources, as is the case of  other databases.

Thank you for your reply.

Best regards