Here the split occurs in the application functionality, one 
part going to the client, other to the server. Distributed 
function applications are the most complex of the three 
typologies  since two separately compiled application 
programs must be developed.  Developers must analyze where 
each function should reside and what type of dialog must 
occur between the two programs. The underlying 
communications facilities may implement either a message-
based or remote procedure call (RPC) mechanism for 
transfer of dialog and data.  However, there are many 
variants of this typology. One variant of the distributed 
function style is where data management and application 
function occur at both the client and server. 
In this instance, data management at the client would 
include referential, read-only data. Data frequently 
updated or accessed by many users would 
reside on the server.