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criteria for the selection of databases on cd-rom the following criteria may be observed for the selection of databases on cd-rom i
booksbooks form one of the primary sources of information they provide a cohesively organised thought content information on a specific
databases on cd-rom the databases presently available on cd-rom can be grouped into the following categories i bibliographic databases
cd-rom database products and servicescd-rom is a derivation of the compact digital audio disc all the optical formats use a set of laser pick-up
classification of documents by information characteristicsthe schemes of classification advocated by hanson and grogan are mainly based on the
categories of document delivery services there tare different agencies concerned with document delivery service let us try to some of these
document delivery services document delivery is considered as one of the important elements of providing access to information it involves the
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
when to access an online search service there are situations when we should consider accessing an online search service one such situation
information resourcesinformation resources are of two kinds namely documentary and non-documentary sourcesdocumentary sourcesa document embodies
methods of survey and study some methods of collecting information about the organisation and about the information requirement of potential
online search services online search services also known as online systems suppliers search services or online service spinners are responsible
citation indexes citation indexing is one of the means of producing an effective index by the effective use of computer for arranging and
individual user interestsmore specific information about users could cover the following subjects and associated interest - eg specific subjects
kwoc key word-out of context index a kwoc index extracts the keyword from the title and the keyword is used as a separate heading with title
user groupsthe next step would be to identify more specifically the potential user groups this may be done on the basis of interviews
kwic key word in context index a kwic index is the most common type of natural language indexes it has become popular because it is
printed indexes one of the first applications of the computer to information retrieval was in the production of printed indexes computers were
term truncation term truncation is one of the devices adapted to facilitate retrieval of terms with a common root containing common fragments
searching the sdi system against user profilesas has been mentioned earlier the user profile attempts to represent not only the users subject
information resources and selection principle the main objective of a library can be stated as to provide for the information needs of a given
institutional characteristics an approach to an understanding of the fields of interest of individuals to be served and of the organisation as
components of sdi system to be operational the sdi system must have the following components built into it i users represented by
definition of sdi hp luhn in one of this papers published in 1961 defined sdi service as that service within an organisation which concerns
computerised information services having understood the basic aspects of information retrieval let us try to understand the nature of