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:
Jun. 14, 2016
Filed:
Mar. 29, 2013
International Business Machines Corporation, Armonk, NY (US);
Ramanujam S. Halasipuram, Bangalore, IN;
Prasad M. Deshpande, Bangalore, IN;
Sriram Padmanabhan, Bangalore, IN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Techniques, systems, and articles of manufacture for determining statistics for cost-based optimization of a workflow. A method includes generating individual sets of statistics for each intermediate relation of a workflow, wherein said intermediate relations comprise results of stages of any plan of the workflow, and wherein each individual set of statistics computes cardinality of the corresponding intermediate relation; determining a global set of statistics for the workflow, wherein said global set of statistics comprises at least one of the individual sets of statistics for each of the intermediate relations; instrumenting a given plan of the workflow to collect the global set of statistics during execution; executing the given plan to collect the global set of statistics; and determining a plan of the workflow with the lowest cost by comparing the cost of multiple plans, wherein the cost of each plan is derived from the global set of statistics.