Аннотации:
Distributed information systems
that support scientific and educational
activities can work with various
information systems. The main goal
of creating a distributed information
system supporting scientific and
educational activities is to accelerate
the pace and improve the quality of
information exchange in the scientific
environment.
The paper considers technological
methods for constructing models of
information systems designed to support
scientific and educational activities.
The model under consideration is that
the developed model of an information
system for working with scientific
materials should solve the problems
of long-term storage of information,
organizing data search by attributes,
accumulating and replacing metadata.
Based on the analysis of typical
scenarios of information servers, the
tasks that should be solved when
organizing an access control system
for distributed information resources
are formulated. Within the framework
of this technology, three access control
models are discussed, which differ in
the degree of integration of information
server functions with the Z39.50
technologies.
The creation and support of
distributed information systems and
electronic libraries that integrate
heterogeneous information resources
and operate in various software and
hardware environments require special
approaches to managing these systems.
If the resources or data themselves can
be managed locally, even for distributed
information systems, then the task
of managing access to distributed
resources cannot be solved within the
framework of local administration. The
justification of the last thesis can be
seen when considering typical scenarios
of the information server, which we will
describe below
