A digital library is a library in which collections are stored in digital formats (as opposed to print, microform, or other media) and accessible by computers. The digital content may be stored locally, or accessed remotely via computer networks. A digital library is a type of information retrieval system.
According to Arms (2000), a digital library is a 'managed collections of information, with associated services, where the information is stored in digital formats and accessible over a network'.
The definition provided by Oppenheim and Smithson, on the other hand, lays emphasis on digital technologies. According to them, a 'digital library is an information service in which all the information resources are available in computer process able form and the functions of acquisition, storage, preservation, retrieval, access and display are carried out through the use of digital technologies' (Oppenheim and Smithson, 1999)