September 8th, 2013, 02:40 PM
3-tier architecture and data mapper
i have an domain object at the BAL that should have a corresponding data mapper at the DAL. as known the data mapper class will hold presistance and retrieval methods like Update, Delete, FindById, FindByName etc.
i understand how those DAL methods should be used at BAL, but what about the UI layer, UI layer should not access DAL directly, so does this mean that i will have to add methods with the exact signature to the domain object class at BAL that should just pass the UI call of a certain database access operation to thier DAL counterpart methods? or what should i do to access DAL through UI?