Information Storage and Retrieval Definition/Meaning:
Information storage is the activity of
recording information for subsequent use, usually on backing store, e.g.
magnetic disk or tape. Storage is one of the fundamental operations that can be
performed on information. It is the principal operation by which information is
retained over a period of time.
Information retrieval is the activity of retrieving stored information, and is
another of the fundamental operations that can be performed on information. The
term information retrieval has a related but distinct meaning in the field of
librarianship, where it refers to techniques (such as keywords and indexes) for
locating text and/or references on a specified topic. In this sense the
information store is usually (though not invariably) held on a machine-readable
medium and accessed by computer.
The term information storage and retrieval (1SR) refers not only to the
activities of information storage and information retrieval, but also to the
techniques involved - of which there are many. Storage and retrieval are
intimately linked. Information is only stored in order that it may be
subsequently retrieved; it may only be retrieved in ways that have been allowed
for at storage time. ISR embraces all methods for labeling stored information in
order to enable it to be accessed later, whether these are in the context of
data-processing files/databases, textual files, graphic databases, etc.