The aim of the HELIOS project is to create an integrated Software Engi
neering Environment (SEE) to facilitate the development and maintenanc
e of medical applications. HELIOS is made of a set of software compone
nts, communicating through a software bus called the HELIOS Unificatio
n Bus. The object oriented paradigm is used both as the basic structur
e for building the software components and as the methodology for mode
lling, storing and retrieving the entities and procedures used in an a
pplication. Development standards include UNIX as operating system and
X Window/MOTIF as windowing environment. One of the target applicatio
ns for the HELIOS prototype is the development of a multimedia medical
workstation as a front end to a hospital information system.