KIBU2021-09-242021-09-242020-11-12http://erepository.kibu.ac.ke/handle/123456789/3241CSC 221:Database systems IenAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/CSC 221:Database systems IDatabase systems ICSC 221Other