How are databases efficient?

Posted by RCIX on Stack Overflow See other posts from Stack Overflow or by RCIX
Published on 2010-04-29T23:42:25Z Indexed on 2010/04/29 23:47 UTC
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Filed under:

database

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data-structures

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efficiency

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query

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fundamentals

If databases can support up to millions of records, how is all of this data organized such that queries can be executed in a reasonable amount of time?

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