Methods to improve indexing of multidimensional databases
First Claim
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1. A computer-implemented method for determining a grid index in a multidimensional database, comprising:
- sampling a grid associated with said multidimensional database;
determining an index performance indicator associated with said sampled grid; and
generating an improved said index performance indicator thereby determining said grid index, wherein said improved index performance indicator describes a number of index entries that are evaluated in said grid index during a search of said multidimensional database.
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Abstract
Systems, methods, and computer products that improve the techniques used to search multidimensional databases over techniques of the past. The preferred embodiment of the present invention advantageously improves the technique of determining a grid index that is used to locate a geometric shape in a spatial database. More particularly, the preferred embodiment of the present invention improves the technique of defining the grid cell size in a grid for a given data set, thereby improving the grid indexing process that locates a particular minimum-bounding rectangle and the associated geometric shape.
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Citations
8 Claims
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1. A computer-implemented method for determining a grid index in a multidimensional database, comprising:
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sampling a grid associated with said multidimensional database;
determining an index performance indicator associated with said sampled grid; and
generating an improved said index performance indicator thereby determining said grid index, wherein said improved index performance indicator describes a number of index entries that are evaluated in said grid index during a search of said multidimensional database. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A computer-implemented method for determining a grid index in a multidimensional database, comprising:
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sampling a plurality of grids associated with said multidimensional database;
determining an index performance indicator associated with each said sampled grid; and
generating an improved said index performance indicator that is the sum of said each grid index performance indicator thereby determining said grid index, wherein said improved index performance indicator describes a number of index entries that are evaluated in said grid index during a search of said multidimensional database.
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Specification