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公开(公告)号：US20160321143A1
公开(公告)日：2016-11-03
申请号：US15139423
申请日：2016-04-27
Applicant: Micro Systemation AB
Inventor： Sebastian Zankl , Jani Niemenmaa
IPC: G06F11/14
CPC classification number: G06F11/1471 , G06F11/1451 , G06F16/219 , G06F16/2358 , G06F16/2365 , G06F16/273 , G06F16/90 , G06F2201/80 , G06F2201/82
Abstract: In the field of forensic analysis of databases, a method of performing database rollback to a previous state of a database using a write-ahead log (WAL) includes: selecting, in the set of frames recorded to the WAL, a specific frame representing a specific revised content of a corresponding specific page; identifying, in the set of frames, a first subset of frames containing the specific frame and zero or more thereto chronologically preceding frames; extracting, from the set of pages of the database, a first subset of pages; extracting, from the corresponding pages of the first subset of frames, a second subset of pages; and performing, based on the contents of the first subset of pages and the revised contents of the second subset of pages, a rollback of the database to a previous state containing the revised content of the specific page.
Abstract translation: 在数据库的法医分析领域中，使用预写日志（WAL）对数据库的先前状态执行数据库回滚的方法包括：在记录到WAL的帧集合中选择代表一个 具体修改内容的相应具体页面; 在所述帧集合中识别包含所述特定帧的帧的第一子集，以及按时间顺序排列的前一帧的零个或更多个; 从所述数据库的所述页面中提取页面的第一子集; 从帧的第一子集的相应页面提取页面的第二子集; 以及基于所述第一页面子集的内容和所述第二页面子集的修改内容来执行将所述数据库回滚到包含所述特定页面的修订内容的先前状态。
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公开(公告)号：US10459804B2
公开(公告)日：2019-10-29
申请号：US15139424
申请日：2016-04-27
Applicant: Micro Systemation AB
Inventor： Sebastian Zankl , Jani Niemenmaa
Abstract: In the field of forensic analysis of databases, a method of performing database rollback to a previous state of a database using a write-ahead log (WAL) includes: selecting, in the set of frames recorded to the WAL, a specific frame representing a specific revised content of a corresponding specific page; identifying, in the set of frames, a first subset of frames containing the specific frame and zero or more thereto chronologically preceding frames; extracting, from the set of pages of the database, a first subset of pages; extracting, from the corresponding pages of the first subset of frames, a second subset of pages; and performing, based on the contents of the first subset of pages and the revised contents of the second subset of pages, a rollback of the database to a previous state containing the revised content of the specific page.
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公开(公告)号：US20160321144A1
公开(公告)日：2016-11-03
申请号：US15139424
申请日：2016-04-27
Applicant: Micro Systemation AB
Inventor： Sebastian Zankl , Jani Niemenmaa
CPC classification number: G06F11/1471 , G06F11/1451 , G06F16/219 , G06F16/2358 , G06F16/2365 , G06F16/273 , G06F16/90 , G06F2201/80 , G06F2201/82
Abstract: In the field of forensic analysis of databases, a method of performing database rollback to a previous state of a database using a write-ahead log (WAL) includes: selecting, in the set of frames recorded to the WAL, a specific frame representing a specific revised content of a corresponding specific page; identifying, in the set of frames, a first subset of frames containing the specific frame and zero or more thereto chronologically preceding frames; extracting, from the set of pages of the database, a first subset of pages; extracting, from the corresponding pages of the first subset of frames, a second subset of pages; and performing, based on the contents of the first subset of pages and the revised contents of the second subset of pages, a rollback of the database to a previous state containing the revised content of the specific page.
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