In our practice, keyword searching is often used as an aid in original cataloging and copy cataloging activities. It gives searchers the flexibility to construct their own search keys by using up to eight keywords in each search. Different keyword index labels can be combined in a single search. The keyword search keys are created by the searcher instead of being defined by the system, which allows significant human input in designing both simple and sophisticated search strategies based on specific information needs. When using conventional search methods, one must formulate the search keys according to the system specifications.
Subject access is highly desirable in any database search.
Keyword searching is the only search method that provides subject access to bibliographic records in WorldCat. None of the conventional search methods can provide such subject access. Keyword searching produces more comprehensive search results compared to derived searching and title phrase searching, because the system indexes a much broader range of fields and subfields for keyword searching. It can even search place or institution qualifiers in corporate names, conference names and series. Keyword searching has tolerance for information inaccuracy.