
Appendix A ◾ 363
from the heterogeneous databases. At the data management level, we have hetero-
geneous database systems technology. At the supporting technology level, one may
use distributed object management technology to encapsulate the heterogeneous
databases. is special framework is illustrated in Figure A.8.
Finally, let us illustrate the concepts that we have described above by using a
specific example. Suppose a group of physicians/surgeons want a system where they
can collaborate and make decisions about various patients. is could be a medi-
cal video teleconferencing application. at is, at the highest level, the application
is a med ...