Patents by Inventor Sheldon Lewis

Sheldon Lewis 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).

  • Querying on hybrid formats and storages
    Patent number: 11514055
    Abstract: Techniques are described for querying on hybrid formats and storages by a DBMS to leverage faster mirror format (MF) data and completeness of persistent format (PF) data. In an embodiment, the DBMS receives a query that specifies both in-memory and disk-only columns. The DBMS identifies that a scan-based operation is referencing an in-memory column stored within both MF and PF data. The DBMS may initiate performing the operation on the in-memory column on one of the formats of data. While doing so, the DBMS may determine that the actual improvement metric for the operation on the selected format data is not achieving the desired improvement. If so, the DBMS may dynamically switch the performing of the scan-based operation to the other format of the same data.
    Type: Grant
    Filed: September 11, 2020
    Date of Patent: November 29, 2022
    Assignee: ORACLE INTERNATIONAL CORPORATION
    Inventors: Teck Hua Lee, Shasank Chavan, Sheldon Lewis
  • QUERYING ON HYBRID FORMATS AND STORAGES
    Publication number: 20210081422
    Abstract: Techniques are described for querying on hybrid formats and storages by a DBMS to leverage faster mirror format (MF) data and completeness of persistent format (PF) data. In an embodiment, the DBMS receives a query that specifies both in-memory and disk-only columns. The DBMS identifies that a scan-based operation is referencing an in-memory column stored within both MF and PF data. The DBMS may initiate performing the operation on the in-memory column on one of the formats of data. While doing so, the DBMS may determine that the actual improvement metric for the operation on the selected format data is not achieving the desired improvement. If so, the DBMS may dynamically switch the performing of the scan-based operation to the other format of the same data.
    Type: Application
    Filed: September 11, 2020
    Publication date: March 18, 2021
    Inventors: Teck Hua Lee, Shasank Chavan, Sheldon Lewis