Jakarta Lucene is a full-featured text search engine written entirely in Java, and it is an open source project available for free download from Apache Jakarta. The current goals of the project are primarily to provide application and also...
Microsoft SQL Server 2005 contains the functionality you need to issue full-text queries against plain character-based data in SQL Server tables. Full-text queries can include words and phrases, or multiple forms of a word or phrase.
msdn.microsoft.com/en-us/library/ms142571.aspx
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