Method of execution, parallel to the requests of a relational database and the use of this process.

摘要

The present invention relates to a process for parallel execution of relational database enquiries within a parallel multiprocessor environment with distributed memory consisting in incorporating monitoring into the enquiry during its compilation, the monitoring being achieved by combining a set of atomic monitoring operations (lw, sw, gw, stp, sp, gp, mp) in order to construct a monitoring graph which is superimposed on the graph of the enquiry, this graph expressing the dependencies between the data through the links between the nodes (I1, I2, 3, I6) of operations and the types of sequencing dependence through builder nodes of two types (SEQ, PIPE). IMAGE