The system level default database values are not part of the job definition. They are retrieved from the configuration at job creation or starting time. When a job is executed by the start or move command, the default database values are re-evaluated dynamically to replace the existing system default values. Because of this, the same job definition can have different target or staging databases when executed, depending on the run time system level default databases. For a job executed by the restart command, the system level default database values are not re-evaluated; the database values set in the prior execution are preserved.