| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To reduce the time required for execution of one query. <P>SOLUTION: The system includes a query acceptance part 7 which accepts a query, and a query execution part 9 which executes the accepted query. The query execution part 9 dynamically generates tasks and executes a plurality of generated tasks in parallel. The query execution part 9 generates, each time when data in a database is needed during execution of each query, a task for obtaining the data, and issues, during execution of this generated task, a data read request for reading the data from the database as needed. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT</p> |
