Abstract: Methods create restoration log records in a restoration log in a computer system which includes software and hardware resources and a data base containing software representations of the resources, which can be exposed to operations from a process associated with the data system or from an operations system for the data system. A restoration log record shall reflect an updating of a resource representation performed from the process or from the operations system. For enabling conditional creation of a log record in the restoration log in case of an operation directed towards the resource representation, each resource representation is provided with logging information indicating whether an updating of the resource representation shall be logged in the restoration log.