公开(公告)号：US20190197026A1

公开(公告)日：2019-06-27

申请号：US16287569

申请日：2019-02-27

Applicant: Oracle International Corporation

Inventor： TIRTHANKAR LAHIRI ,  MARTIN A. REAMES ,  KIRK EDSON ,  NEELAM GOYAL ,  KAO MAKINO ,  ANINDYA PATTHAK ,  DINA THOMAS ,  SUBHRADYUTI SARKAR ,  CHI-KIM HOANG ,  QINGCHUN JIANG

IPC: G06F16/21 ,  G06F16/27

CPC classification number: G06F16/211 ,  G06F16/21 ,  G06F16/278

Abstract: Columns of a table are stored in either row-major format or column-major format in an in-memory DBMS. For a given table, one set of columns is stored in column-major format; another set of columns for a table are stored in row-major format. This way of storing columns of a table is referred to herein as dual-major format. In addition, a row in a dual-major table is updated “in-place”, that is, updates are made directly to column-major columns without creating an interim row-major form of the column-major columns of the row. Users may submit database definition language (“DDL”) commands that declare the row-major columns and column-major columns of a table.