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Here is a
sample record from a premium citation database:
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Notice
that, besides not providing the full text of the article, this
citation doesn't even provide an abstract. Some articles will
have an abstract in this kind of database; many will not.
Since you
cannot rely on matching your words to the text of articles or abstracts, the subject
terms become much more important.
The
citations in these databases usually provide more subject
terms than in full-text databases, and these terms are usually more
specific than in full-text databases.
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Since
these premium databases hold so many records, a general keyword
search like we did in the full-text database would provide a much larger
number of citations to wade through, in search of a good article.
By using
the very specific subject terms, you can more quickly focus your
search to the articles that meet your needs, eliminating articles
that only touch lightly on your search topic.
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