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PHP Programming with PEAR by Stoyan Stefanov, Carsten Lucke

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Speed Considerations

Now that you are salivating over all these great features that are bundled in MDB2, you should think about speed and performance issues. When using a database abstraction layer you need to understand that in many cases you will need to sacrifice performance speed for the wealth of functionality that the package offers. This is not specific to MDB2 or even database abstraction layers, but to abstraction layers or software virtualization systems in general.

Thankfully, unlike VMWare or Microsoft Virtual PC, which abstract each system call made, MDB2 only provides abstraction when a feature is not available in a specific back end. This means that performance will depend on the platform on which you are using MDB2. If you are ...

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