System for parallel processing of complex read-only database queries
using master and slave central processor complexes
    5.
    发明授权
    System for parallel processing of complex read-only database queries using master and slave central processor complexes 失效
    使用主从中央处理器复合的并行处理复杂的只读数据库查询的系统

    公开(公告)号:US5495606A

    公开(公告)日:1996-02-27

    申请号:US148091

    申请日:1993-11-04

    摘要: A parallel query processing system comprises a front end processor, a query processing complex attached to the front end processor, and a database on a data repository attached by a first path to the front end processor, and by one or more additional paths to one or more slave processors within the query processing complex. An external operations command processor within the front end processor quiesces database managers in the slave processors to permit maintenance operations by the front end processor, and restarts the slave processors in read-only mode after maintenance operation completion. A splitter/scheduler function in a master processor within the query processor complex receives complex read-only queries from the front end processor, splits them into query elements, schedules the query elements for execution on the slave processors and recombines the execution results to be sent back to the front end processor.

    摘要翻译: 并行查询处理系统包括前端处理器,连接到前端处理器的查询处理复合体,以及数据库,由通过第一路径附加到前端处理器的数据库,以及通过一个或多个附加路径到一个或多个 更多的从属处理器内的查询处理复杂。 前端处理器中的外部操作命令处理器使从属处理器中的数据库管理器停止,以允许前端处理器进行维护操作,并在维护操作完成后以只读模式重新启动从属处理器。 查询处理器中的主处理器中的分离器/调度器功能从前端处理器接收复杂的只读查询,将其分解为查询元素,调度查询元素以便在从属处理器上执行,并重新组合要发送的执行结果 回到前端处理器。