Patents by Inventor Spyros Triantafylis

Spyros Triantafylis 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).

  • Multi-level metadata in database systems
    Patent number: 10810232
    Abstract: Systems, methods, and devices for multiple level metadata organization in database systems. A system includes a plurality of shared storage devices collectively storing database data across a plurality of tables that each comprise one or more micro-partitions including immutable storage devices. The system includes a resource manager configured to manage the storage of database data stored in a table across one or more of the plurality of shared storage devices. The resource manager is configured to manage the storage of metadata for the table. The metadata includes a column expression property with information about data stored in a column, a micro-partition expression property with information about data stored in a micro-partition, a grouping expression property with information about data stored in two or more micro-partitions, and cumulative table metadata with global information about all micro-partitions of the table.
    Type: Grant
    Filed: January 28, 2020
    Date of Patent: October 20, 2020
    Assignee: Snowflake Inc.
    Inventors: Ashish Motivala, Yi Fang, Martin Hentschel, Benoit Dageville, Spyros Triantafylis, Yizhi Zhu
  • MULTI-LEVEL METADATA IN DATABASE SYSTEMS
    Publication number: 20200272638
    Abstract: Systems, methods, and devices for multiple level metadata organization in database systems. A system includes a plurality of shared storage devices collectively storing database data across a plurality of tables that each comprise one or more micro-partitions including immutable storage devices. The system includes a resource manager configured to manage the storage of database data stored in a table across one or more of the plurality of shared storage devices. The resource manager is configured to manage the storage of metadata for the table. The metadata includes a column expression property with information about data stored in a column, a micro-partition expression property with information about data stored in a micro-partition, a grouping expression property with information about data stored in two or more micro-partitions, and cumulative table metadata with global information about all micro-partitions of the table.
    Type: Application
    Filed: January 28, 2020
    Publication date: August 27, 2020
    Inventors: Ashish Motivala, Yi Fang, Martin Hentschel, Benoit Dageville, Spyros Triantafylis, Yizhi Zhu