| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem: when a query is processed in a distributed manner using a plurality of computers, especially in terms of positional relationships of terminals, a division key is used as coordinates, where assigned data arithmetic device is changed due to the movement of the terminals, so that a query including restriction concerning a principal key may wastefully consume a CPU or a memory as a result. SOLUTION: In a query is processed in a distributed manner in a computer system having a plurality of distributed computers 102(102a to 102f), a management computer 103 and a data distribution device 104, a query and a window are inherited between different computers. When a tuple having a new principal key value is detected when a query is to be executed, a relevant individual query and a relevant sliding window are inherited between computers, and further the window of a relevant common query is inherited between computers. COPYRIGHT: (C)2011,JPO&INPIT |
