公开(公告)号：US11860863B1

公开(公告)日：2024-01-02

申请号：US17810331

申请日：2022-06-30

Applicant: Amazon Technologies, Inc.

Inventor： Marc Bowes ,  Victoria Elizabeth Scearcy ,  Kritin Gokharu ,  Eric Justin Kraemer ,  Junaid Azad Mohammed ,  Abigail Marie Kuic ,  Robert McGregor Marrowstone ,  Steven Michael Hershey ,  Yosseff Levanoni ,  Omer Ronen

IPC: G06F16/23 ,  H04L9/00

CPC classification number: G06F16/2379 ,  H04L9/50

Abstract: A journal-based database may include items, e.g., organized in a table, associated with a journal. The journal may include a hash-chained set of blocks individually including data representing previous and/or current versions of the individual items. The database may receive a request to redact specific data from the database. The database may search the blocks to determine whether the specific data exists. When the specific data exists in a block of the journal, the database may redate the specific data in the identified block. The database may retain existing metadata of the block such that cryptographic verifiability of the hash-chained blocks may be preserved.

公开(公告)号：US11797521B1

公开(公告)日：2023-10-24

申请号：US16917698

申请日：2020-06-30

Applicant: Amazon Technologies, Inc.

Inventor： Akshat Vig ,  Somasundaram Perianayagam ,  Colin Lazier ,  James Christopher Sorenson ,  Yosseff Levanoni ,  Stefano Stefani ,  Maximiliano Maccanti

IPC: G06F16/23 ,  G06F16/22 ,  G06F16/245

CPC classification number: G06F16/2379 ,  G06F16/2291 ,  G06F16/245

Abstract: A database system may associate functions with a database table. A request to associate a function with a table in a database system may be received. An association between the table and the function may be created. The function may include parameters that are determined from values within the table which are then invoked by a request to perform the function. The associated function may cause the collection of the values prior to performance of the function.