Academic courses in library science include collection management, information systems and technology, research methods, user studies, information literacycataloging and classificationpreservationreferencestatistics and management. Library science is constantly evolving, incorporating new topics like database managementinformation architecture and information management, among others.

 Library and Information Science are very essential for the development of a society. It helps in
 overall personality development and quality of life of a human being. It also helps in the
 preservation and conservation of cultural heritage of a country. The information as resource is
 very crucial for the development of a country. The libraries are responsible for socio-economic
 development. Now a day, progress of a country is measured on the basis of “information rich”
 or “information poor”. LIS can also be seen as an integration of the two fields – library science
 and information science, which were separate at one point. The purpose of this unit is to enable
 the students to comprehend basic expressions. At the end of this unit, you should be able to
 understand the definition, history, need, purpose and functions of Library Science.