Within each environment is a list of jobs. These jobs contain all the segments for your animated sequence. If you are creating a weekly television series called The Show, you could name your job show_ep_06 (the_show would be the name of your environment).
If each episode was composed of 100 animated shots, each job would contain 100 scenes.
If you want to remove a job and its data from the Harmony database and archive it, you can export the job from Control Center.
IMPORTANT You cannot archive a job by deleting the job. If you want to archive a job, you should export it to a new location where it can be stored permanently.