The most popular open source database (with more than four million users) is made by a company called MySQL, which has been venture-backed since 2001.

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Google Scholar, the open source database used to identify published cases, is not a complete data base of state cases involving Shariah because as a search tool it allows retrieval only of those reported appellate and trial court level cases that are available through open sources.

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Cloudera specializes in software for Hadoop, an open-source database tool designed to work at very large scales.

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He is looking at scaled-down Linux desktops and open-source database software to replace software he now buys from Microsoft and Oracle.

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Another, called Bloom, was developed by computer scientists at UC Berkeley for analysis of large data sets in the popular open source Hadoop database.

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Over time, cost pressure has led the IT organizations to consider open source for mission critical components such as database management systems (mySQL) or the operating system itself (Linux).

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Both Memcached, which accelerates existing relational databases like MySQL, and Redis, which is a complete, stand-alone database and acceleration solution, are open source technologies.

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Linux, the MySQL database and other low-cost open-source software, first created by amateurs, have evolved at Internet speed and are now polished enough to rival products from Microsoft and Oracle.

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It sells database software which is also available in a free, widely used, open-source version.

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