公开(公告)号：US20210089556A1

公开(公告)日：2021-03-25

申请号：US16581253

申请日：2019-09-24

Applicant: Salesforce.com, Inc.

Inventor： Mikhail CHAINANI ,  Xiaodan WANG ,  Vijayanth DEVADHAR

IPC: G06F16/27 ,  G06F16/23 ,  G06F16/22

Abstract: A first copy of a database object may be constructed prior to applying a designated database update request to a first database. The database object may be represented by a plurality of database table rows in the first database, and the request may update one or more of the plurality of rows. The request may be applied to the first database to update the one or more of the plurality of rows in the first database. A second copy of the database object may be constructed after applying the database update request to the first database. A message identifying a difference between the first copy of the database object and a second copy of the database object may be transmitted to a remote computing device.

公开(公告)号：US20210141770A1

公开(公告)日：2021-05-13

申请号：US16681922

申请日：2019-11-13

Applicant: Salesforce.com, Inc.

Inventor： Xiaodan WANG ,  Mikhail CHAINANI

IPC: G06F16/182 ,  G06F16/185 ,  G06F16/178 ,  G06F11/14 ,  G06F11/20

Abstract: A request may be received to relocate source data within a distributed database system arranged in a hierarchy composed of a plurality of levels. The plurality of levels may include a local level that includes a plurality of pods, which may be end points in the hierarchy. The data may be stored at a source pod. The request may identify a designated level in the hierarchy at which to relocate the source data. A target pod within the distributed database system may be selected. The source pod and the target pod may be located remotely from one another. The data may be replicated to the target pod via a local change bus in communication with the source pod. The local change bus may capture changes made to data stored in the source pod and transmit the captured changes to the target pod via the hierarchy.