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:
Aug. 01, 2017
Filed:
Sep. 08, 2016
International Business Machines Corporation, Armonk, NY (US);
Shuo Li, Beijing, CN;
Ping Liang, Beijing, CN;
Ke Wei Wei, Beijing, CN;
Xin Ying Yang, Beijing, CN;
Chen Xin Yu, Beijing, CN;
International Business Machines Corporation, Armonk, NY (US);
Abstract
Optimization of a multi-index database access at runtime. A processor receives a query. A processor determines a plan and a record identifier (RID) results threshold for the plan, wherein the plan includes an access to the index. A processor determines a static risk threshold, a static risk for the access, and whether the static risk exceeds the static risk threshold. Responsive to the static risk exceeding the static risk threshold, a processor determines a risk bound for the access, and links the access to the risk bound. A processor accesses the index with the key. Responsive to the access being linked to a risk bound, a processor determines a dynamic risk for the access. A processor receives one or more RID results during the execution of the plan. A processor aborts the execution of the plan if a quantity of the RID results is less than the RID results threshold.