摘要: |
National information and control systems are emerging that require system architectures for deployment across the nation, e.g., air traffic control systems, military command and control systems, and other national information systems. The required characteristics for the national level architectures include modularity, openness, and evolvability. Modularity permits a variety of system configurations. Each may be designed to size a community's system with a level of functionality commensurate with the community's needs. Openness enables system interoperability with other systems at both horizontal and vertical levels. Evolvability requires the system to permit functionality and scope changes as the community and technology evolves. The perspective of this paper is a survey of new system development concepts to identify the strategy to develop a national level architecture. |