PURPOSE: To divide table data with high access frequency and to allocate divided data to other processors.
CONSTITUTION: When a table T 19 is divided and stored in storage devices 18a to 18c connected to the slave stages of three processors 16a to 16c, a host 12 refers to the management information of the table T 19, inquires access frequency to allocated data in the table T 19 of the processors 16a to 16c, inhibits access to data Tc having access frequency higher than a prescribed level and commonds a processor Pc to transfer the data Tc to processors 16d, 16e to which data in the table T are not allocated. The processor Pc divides the data Tc into three so that data volume is uniformed, transfers two divided data respectively to the processors 16d, 16e and erases the transferred data from the storge device 18c. The processors 16d, 16e store the transferred data in their slave storage devices 18d, 18e. After ending the transfer, the host 12 resets the inhibition of access to the data Tc and updates the management information of the table T 19.
| JP2004234679 | TRANSMITTING DEVICE FOR STRUCTURED DATA |
| JP2007257667 | DATA PROCESSING SYSTEM |
TSUCHIDA MASASHI
TORII SHUNICHI
