Rules• Source Code is available• May use for Free or Commercial uses• Must pass along with same Licensing• Some vendors support, for a charge• “Sharing with Rules”
• Linus’s Law– Given Enough Eyeballs, All Bugs Are Shallow
• Linus Torvalds (Linus of Linux)
Cost Comparison
Published 2011:• Commercial MySQL @ $500 vs. $5,000 to
$40,00 for Oracle, DB2 or SQL Server• Annual $4,000 MySQL vs. $300,000 for
Oracle
ChecklistFeaturesSupportEase of UseStabilitySpeedTrainingLicensing
Actually, true of Any DB product…
Historical AltruismOpen Source“Harnessing the Power of Communities”Self-Organizing Collaborative Communities
– GNU/GPL General Public License– Linux/Apache
Historical Altruism– OED
– Meiji Japan– Amazon.com Reviewers– Wikipedia– YouTube– Bloggers
Winchester, Simon, the Professor and the Madman: A Tale of Murder, Insanity, and the Making of the Oxford English Dictionary, New York: HarperCollins (0-06-017596-6), 1998.
Open Source & DB Management• Pool of Developers & Testers• Source Code available, Changes shared &
inspected• Not locked into a Vendor’s plans• Multiple Versions, Choose the one you like• No per seat licensing
Open Sores Disadvantages• Incomplete documentation• Specialized/Proprietary needs not covered• Open Source Licenses vary• “One size fits all”, features missing• No Certification Standards
• It has to interest some volunteers, usually solve a problem THEY have
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