chapter  7
12 Pages

Shared Data

An external input (EI) is an elementary process that processes data or control information sent from outside the boundary to maintain one or more ILFs and/or to alter the behavior of the system. An external output (EO) is an elementary process that sends data or control information outside the application’s boundary to present information to a user through processing logic other than or in addition to the retrieval of data or control information. An external inquiry (EQ) is an elementary process that sends data or control information outside the boundary to present information to a user through the retrieval of data or control information.