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Computerised Information Services
Having understood the basic aspects of information retrieval, let us try to understand the nature of computerised information, services: Computer-based information services can conveniently be studied under the following heads:
i) Current Awareness Services
ii) Printed Indexes
iii) Online Search Services
iv) Document Delivery Services
v) CD-ROM Database Products and Services
Functions of an IRS Information Retrieval (IR) is best understood if one remembers the information being processed consists mainly of documents. In that context, IR deals with
The Online Search The first stage; in conducting a search is to develop a clear specification of the information required by the end-user. The search may he conducted by the
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Problem: (a) Name and explain the various categories of electronic commerce. Give one example of each. (b) What do you meant by disintermediation, and how does it benefit
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