Answer:
The caste system is structured in terms of the businesses. The area of work defines what caste a certain person belongs to. Work lines such as agriculture and trade are considered as the higher and more prestigious castes whereas the lower level works such as music is considered as a caste of lower rank.
People are known from the caste background they belong to and that defines their role in the society. People tend to marry in the same caste to avoid mixing up in lower castes. some castes are given preference over other in the employment market. This also gives rise to inequality in the society.