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ITWorld.com: Linux's Contribution to Database Scalability

May 22, 2002, 08:00 (0 Talkback[s])
(Other stories by Bob Angell)

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"We have already discussed the reliability, cost effectiveness, and efficiency of databases on an Enterprise (mainframe/midrange) Linux installation. Today, we will talk about the scaleable aspects of such a solution. Hopefully by now, you will have had the opportunity to peruse the http://www.tpc.org (tpc.org) site as I will be referencing it for today's discussion.

"A scaleable database means many things, however, I will use the following definition of database scalability: A database is scaleable, if and only if, its performance grows linearly (or better) as it's size increases. For example, if I have a database 3GB, 300GB, or 3TB in size, my administration, queries (updates, inserts, deletes, indexing, etc...), and analytics (OLAP, data mining, statistical analysis, etc...) have linear or better performance assuming appropriate hardware infrastructure.

"Many good and functional databases are available, but many saturate and decrease in performance under higher database loads. Some will even try to use clever caching tricks to make them perform well, but these do not work well at the 1TB limit or beyond. Based on this, they would not be scaleable by my definition..."

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