A relatively new kid on the block, Web scale discovery services are powered by a single index of records for both traditional library catalog content such as books, CDs, and DVDs, as well as article-level content. If a next-generation OPAC, a federated search engine, and all of your full-text databases had a baby, that baby would be Web scale discovery. Web scale systems are fast; they're comprehensive; they're mobile-friendly; and librarians should be taking a serious look at them. A library that has 100 databases available to participate in a federated search, in reality, usually chooses to group them into smaller subsets. These smaller subsets serve to fragment the collection and lead to search box proliferation. While this is big news for them and for their users, when they do finally put up that single search box, it's going to be a complete nonevent.
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