The Dependencies tab displays all the other jobs on which the scheduled version of the current job depends. Batch jobs can have hard or soft dependencies. A soft dependency means that this job will not run until that dependent job has completed, but will run regardless of whether or not the job it depends on completed successfully. A hard dependency indicates that the job must not only complete before this job runs but it must complete successfully.
Note that you can run an unscheduled job without regard to the specified dependencies. The job will run automatically when the run button is clicked.