ALEXANDRIA, Va., May 19 -- United States Patent no. 12,632,451, issued on May 19, was assigned to SAP SE (Walldorf, Germany).
"Checker for distributed plans" was invented by Stefan Noll (Sandhausen, Germany), Paul Willems (Heidelberg, Germany) and Faming Qu (Xi'an, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A database management system receives a first query execution plan to be executed on a plurality of computing nodes. The database management system determines whether the first query execution plan would result in an execution deadlock by performing the following three steps. First, the database management system generates a reduced representation of a portion of the first query execution plan c...