SDI is a current awareness system which alerts you to the latest publications in your specified field(s) of interest. A user registers at such a system with keywords representing his or her fields of interest, called a search profile. When new publications matching the search profile appear, the system informs the user of them instantly, periodically or upon request.
Selective Dissemination of Information assists user in keeping up-to-date current literature in particular subject areas. The purpose of SDI is to help users cope with information overload. The library provides a list of selected literature or titles of library materials available in the library based on a chosen subject. The sources of the literature may vary, from various materials such as books, serials, proceedings and also electronic sources.