Data processing system

摘要

A data base horizontal partitioning system is provided for use in a relational data base management system for storing a relation contained in a data base into a plurality of disc storage units 2a-2d by partitioning horizontally the relation on the basis of tuples; wherein when storing the relation having clustered indexes 12 therein into a plurality of disc storage units, and when a physical page as 13a in a disc storage unit is to be filled to a full state with a plurality of tuples in the relation, the page may be divided into two so that one half of thus-divided page may be stored into a disc storage unit which has currently a least number of pages containing the tuples for the relation.