Importance

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Abstract

Provided are techniques that ensure efficient database accesses by partitioning. The techniques includes a partition generating unit which generates a value partition in which a unit subtree including target data to be partitioned is separated and registered according to the target data, and a base partition which includes an index for uniquely identifying the unit subtree, an XML parser which identifies positions of a start to and an end tag defining an attribute value of the structured document and generates a cutting position list Corresponding to the hierarchical structure of the attribute value for registration in a storage area, an XML cutting unit which identifies the start tag position and the end tag position of the unit subtree to be cut, and separates the unit subtree and its index from the structured document, and a cut-XML registration unit which registers the unit subtree and the index in the separate partitions.

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First Claim