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Method and system for reducing host variable impact on access path selection










Image Number 2 for United States Patent #7698253.

The present invention proposes enhancing the access path selection process by storing the relevant frequency distribution and the host variables values used for selecting the access path together with the corresponding access path executable. This way, the host variables impact to the access path can be inexpensively assessed and the re-optimization triggered only if necessary.








 
 
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