Provided are devices and methods for repairing corrupt data using a secure environment in a productive system. In one example, the method includes receiving a request to modify a base table stored in a productive environment, generating a child table corresponding to the base table within a secure environment of the productive system, modifying the one or more table entries from the base table and storing the modified table entries in the child table, executing one or more operations on the child table within the secure environment to determine if the one or more modified table entries repair the base table, and outputting a determined result of the one or more operations to a user interface. As a result, corrupt data can be modified locally via inheriting tables within a secured environment without any further damage being done to productive data in a productive environment.