| 摘要 |
In a data processing system for management of a relational data base stored among a plurality of disc storage units, a method and apparatus for horizontally partitioning a physical page on the basis of tuples includes a master processor, a master disc storage unit coupled to the master processor, a plurality of slave processors controlled by the master processor, and a plurality of slave disc storage units, one coupled to each of the slave processors. The master disc storage unit stores, in the form of a B-tree structure, a clustered index for either an attribute or a relation to be processed in the relational data base. The plurality of slave disc storage units store divisionally a relation in the data base which is partitioned on the basis of a page for a clustered index thereof in such a manner that the plurality of slave processors may execute, in parallel, a plurality of processings on a cluster of tuples, as defined in their range in connection with a given key value of the clustered index.
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