Invention Grant
- Patent Title: Virtual archiving of database records
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Application No.: US16946515Application Date: 2020-06-25
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Publication No.: US11294892B2Publication Date: 2022-04-05
- Inventor: Luis Eduardo Oliveira Lizardo , Felix Beier , Knut Stolze , Reinhold Geiselhart
- Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Applicant Address: US NY Armonk
- Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
- Current Assignee Address: US NY Armonk
- Agency: Schmeiser, Olsen & Watts
- Agent Stephanie Carusillo
- Main IPC: G06F16/242
- IPC: G06F16/242 ; G06F16/22 ; G06F16/11 ; G06F16/23 ; G06F16/25

Abstract:
A database-management system (DBMS) archives a record of a database table by updating the record's unique “Archived” field. This indicates that the record should be considered to have been archived despite the fact that the record has not been physically moved to a distinct archival storage area. When a query requests access to the table, the DBMS determines whether the query requests access to only archived data, only active data, or both. If both, the DBMS searches the entire table. Otherwise, the DBMS scans each record's Archived field to consider only those records that satisfy the query's requirement for either archived or active data. If the DBMS incorporates Multi-Version Concurrency Control (MVCC) technology, the DBMS combines this procedure with MVCC's time-based version-selection mechanism.
Public/Granted literature
- US20210406259A1 VIRTUAL ARCHIVING OF DATABASE RECORDS Public/Granted day:2021-12-30
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