Abstract: The computerized knowledge based Expert System performs the function of an expert
advisor. Several applications of expert system have given rise to useful database management
systems, which helps to obtain relevant information. Expert systems contains knowledge about any
specialized area which enables a user to formulate such profiles and obtain relevant information by
using an interface engine.
This article discusses the architecture, tools, advantages, limitations and areas of
application of expert system. It also points out the implications of expert system on Library and
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