(covers information from several alternate timelines)
A mission profile was an overview of the expected goals and steps in a given (type of)mission.
In 2370, Jadzia Dax read Melora Pazlar's mission profile and was impressed by her level of expertise. Later, while going through the profile, Melora decided to retrieve an extra astrometric array from Deep Space 9's storage bay and wound up tripping over the doorway. (DS9: "Melora")