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Web information systems and databases
Suppleness, reliability, availability, scalability, and architectural nimbleness.
These goals are not unique to web-based systems. But the best practices for achieving
them continue to evolve.
Decisions such as what language(s) to use, organization
of and communication between system components, and interaction with back-end
information systems determine how well a web-based system functions and grows.
Some of the Web Information Systems we've worked on are:
- The PivotCMS website content management system
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- Dartmouth College Fund Honor Roll Project
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- GFSA's Qualitative Issues Analysis (QIA™) product, a web-based
media monitoring and analysis system.
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- Geospatial web databases at Vicinity Corporation
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More on Web Information Systems
Web information systems have several demanding characteristics
- High-availability is a consideration because web users don't
like spotty and unpredictable access to web-based services. Users want
these services to be like the telephone dial tone: always on.
- Reliability and fault-tolerance are components of high-availability. High-availability
doesn't occur by happenstance. It is designed into the hardware, software, operational,
and cultural components that comprise an information system.
- Redundancy is a common technique for achieving fault-tolerance. Redundancy
can be applied in various software, hardware and operational parts of an information system.
Redundancy is part of an overall strategy for achieving fault-tolerance.
- Scalability is required to meet periods of peak demand, gradual increases in traffic, and the graceful addition of function. An information system's scalability is measured by its ability to maintain response time and throughput values within defined service level parameters.
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