Patents by Inventor Xin Ying Y. Yang

Xin Ying Y. Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • OPTIMIZING QUERY STATEMENTS IN RELATIONAL DATABASES
    Publication number: 20140358894
    Abstract: Optimizing query statements in relational databases including determining filtering performance for each of at least two complex predicates in a predetermined layer of the query statement based on a result of a query performed on predetermined data records by using only the complex predicate. The results are ranked based on the filtering performance and re-ordered so that a complex predicate with a higher filtering performance is ranked before a complex predicate with a lower filtering performance. These techniques produce shortened data query response times and improved execution efficiency.
    Type: Application
    Filed: April 11, 2014
    Publication date: December 4, 2014
    Applicant: International Business Machines Corporation
    Inventors: DongJie Wei, Ke W. Wei, Xin Ying Y. Yang, Miao Zheng