Information retrieval (IR) is information-seeking behaviors which uses computer technology to access desired information from a database.
The term information retrieval is attributed to Calvin Mooers around 1950, and its used is associated with the explosion of scientific documentation produced during and following World War II.
Information may be retrieved directly through an interface or indirectly, through an intermediary (such as librarian). Retrieval is dependent upon searching within certain defined and indexed fields, such as title, author, subject etc.
Computer based information retrieval systems can largely overcome many of the limitations of manual systems. In most cases computer-based retrieval systems not only allow the user to combine several retrieval parameters, but they also provide relatively rapid results.
What is information retrieval?
A computer system is a collection of hardware and software components designed to provide an effective tool for computation. Computer system are used in every walk of life to assist us in the various tasks we perform. The wide availability of the internet has enhance the use of computer for information sharing and communication. Computer system allows us to store, process, display and communicate information. In any modern computer system even a simple one, in general needs several different programs in order to accomplish its various functions.
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