In library science, a systematic and exhaustive search for published material on a specific subject, together with the preparation of annotated bibliographies or abstracts. Such searches are now commonly performed using on-line databases.

• 在图书馆学中,就一个专门课题对出版物进行系统和详尽的检索,检索出相关文献的目录或文摘。这种检索目前常由联机数据库实现。