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 …showed first 75 words of 3201 total…

…showed last 75 words of 3201 total…Mishra (Asstt. Librarian, Tagore Library, Lucknow University) for their kind permission to present this paper in National Conference on Information Management in e-libraries at IIT, Kharagpur (2002). References: 1. Annual Review of Information Science & technology. Henry A. Sowizral. Newyork ; Knowledge Industry, 1985, Vol. 20, p.179. 2. Encyclopedia of library and information Science, Vol. 55, supplement 18. 3. Iaslic Bulletin, Vol .44 (3), 1999, p. 79-83. 4. ibid. 5. ibid. 6. op.cit 1 p.179 7. ibid. 8. Iaslic Bulletin, Vol .44 (3), 1999, p. 79-83. 9. University News, Vol. 38 (33), 2000, p.13-16. 10. op.cit 1 p.179