What Application Architecture is HL7 based on?
HL7 tries not to assume a particular architecture with respect to the placement of data within applications. In particular, it is designed to support a central patient care system as well as more distributed environment where data reside in departmental systems. There is support for environments where there is no order entry system, a central order entry system, or multiple systems that can originate orders. There is support for environments where results data and observations reside on a single system or where they are distributed among several systems.
