a facility for managing an organization's bi data; functions include: obtain data, cleanse data, organize and relate data, catalog data  includes data from outside source
a facility for managing an organization's bi data (current and previous). the functions are to: -obtain data -cleanse data -organize and relate data -catalog data
only allow a limited amount of data buffered at the sender and receiver sockets. sends will block once the sender buffer is full - used in tcp