Abstract
A health-care workstation is the means by which a professional interacts with the
information artifacts of health care. However, a major transformation is taking place
in the software architecture of health-care systems that alters significantly the
role of the workstation. Health-care systems are becoming more complex in response
to the need to support “extended enterprises” across regions, and provide both horizontal
and vertical integration capabilities. Component-based software methodologies are
being introduced that match well the needs of these large systems and the component
services they must integrate. In the component-based framework, a workstation functions
less as a “portal” for information transactions carried out on distant host computers,
and more as the “orchestrator” for tasks involved in assembling, organizing, presenting,
and manipulating information. Applications residing on workstations access distributed
software components that carry out encapsulated functions for the application. Componentintegration
methodologies include both formal and ad hoc approaches; the principal emerging technologies
are the World Wide Web (WWW), CORBA, Java, OLE, and OpenDoc. An emerging strategy
appears to be that of developing application integration environments that encompass
and support all of these integration methodologies. Component-based approaches also
facilitate standardization at the message level, as messages to classes of components
can serve to focus such standardization.
Keywords
Workstations - Integration - WWW - Corba - Java - OLE