The D'jarra was a caste system that the Bajoran people adhered to prior to the Occupation of Bajor by the Cardassian Union. All Bajorans were born into a specific D'jarra based on their family, which determined their occupation in their lives. Members of the lower-ranking D'jarra were expected to show both respect and deference to those in the higher ranks. (DS9 episode: "Accession")