公开(公告)号：US11940990B1

公开(公告)日：2024-03-26

申请号：US15625976

申请日：2017-06-16

Applicant: Amazon Technologies, Inc.

Inventor： Sharatkumar Nagesh Kuppahally ,  Ravi Math ,  Adam Douglas Morley ,  Ming-chuan Wu ,  Wei Xiao ,  Rajaprabhu Thiruchi Loganathan

IPC: G06F16/23 ,  G06F16/245 ,  G06F16/27

CPC classification number: G06F16/2379 ,  G06F16/245 ,  G06F16/27

Abstract: Consistent queries to replicated data may be performed according to global clock values. Time values for updates performed at a data set may be identified according to a global clock. The updates may be replicated to a replicated portion of a data set. Queries directed to the replicated portion of the data set may be performed in response to determining that the time values for updates indicate that the replicated portion of the data set is consistent with a time value identified for the query according to the global clock.

公开(公告)号：US10929396B1

公开(公告)日：2021-02-23

申请号：US15818687

申请日：2017-11-20

Applicant: Amazon Technologies, Inc.

Inventor： Sandeep Bhatia ,  Kanishka Chaturvedi ,  Maruthi Manohar Reddy Devarenti ,  VamsiKrishna Chaitanya Manchem ,  Andrew Whitaker ,  Ming-chuan Wu

IPC: G06F16/2453 ,  G06F16/81 ,  G06F16/93 ,  G06F9/54

Abstract: Multi-type attribute indexes may be implemented for document databases. When a request to perform a query at a document database is received that is directed toward in indexed attribute that has multiple data types for values stored in the multi-type attribute index, a predicate in the query may be replaced with a different predicate that is applicable to search the multi-type attribute index according to a sort order for the multiple data types stored in the at multi-type attribute index. A plan that includes the different predicate may be performed in order to provide a result of the query to a user.