| 摘要 |
PURPOSE:To speed up relational arithmetic without increasing the load on a CPU by performing part of the relational arithmetic at the stage of data transfer from an auxiliary storage medium to a main storage device. CONSTITUTION:Records consisting of >=1 field are arranged successively at input/output devices 15a-15n. The input/output devices 15a-15n are connected to the CPU10 through a controller 14, sorting device 13, and channel 12. When plural records are transferred from the input/output devices 15a-15n to the CPU10, each record is divided into plural and the buffering and relational arithmetic of records are performed, block by block. |
