The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2003
Filed:
Sep. 22, 1999
Paul Miller Bird, Toronto, CA;
Michael Joshua Snowbell, Thornhill, CA;
International Business Machines Corporation, Armonk, NY (US);
Abstract
The invention provides a data processing system, a method, computer program product and software for operating it where the data processing system includes a number of interconnected nodes. At least one data partition resides on one of the nodes, and one or more tables reside in a data partition. One of the nodes has a catalogue containing metadata describing tables and other objects and relationships therebetween in the data processing system. There is a global instruction cache at each node having a statement portion storing instruction statements and associated executables; each of the executable is designed for a particular environment; the instruction cache includes a dependency portion which lists objects and links them to the corresponding executable entries that depend on the objects; the instruction cache includes a shipped variation portion, each entry of the shipped variation portion refers to one executable entry and identifies the node from which the statement associated with the executable was originally shipped and the identification of such executable in the node from which it was originally shipped. The cache includes an invalidations in progress portion, each entry of the invalidations in progress portion refers to an object entry in the dependency portion.