Beagle is a free SQL engine designed and implemented by Robert Klein. Like GNU SQL, Beagle is planned to be a fully SQL compliant server with all of the features, including the object-relational extensions pioneered by PostgreSQL. Also like GNU SQL, Beagle is very much a work in progress. At the time of this book's printing, it had reached a level of sophistication where it is reliable and usable as a test or development server. It should not yet be used in a production environment.
One of the most interesting aspects of Beagle is that the author maintained a history log from the very beginning of the project. By examining the log, you can get a peek at the development of an SQL server from a simple TCP client/server test application to the almost fully functional SQL server it is today. The Beagle home page is located at http://www.beaglesql.org.
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