EDIT

Schema Updater should return a Result instead of pure boolean. #6689

Also we may want to register each successful step in the model version instead of updating only after full update script running.

Updates steps should be split into

• adding objects (column, tables, etc.) - no harm but also no transactions possible

• updating data - may run in a single transaction

• removing object - no real harm if not successful, step may run optionally, feedback for system administrator may be alternative solution

see also #3734