- Patent Title: Systems and methods to optimize multi-version support in indexes
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Application No.: US14229638Application Date: 2014-03-28
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Publication No.: US09645844B2Publication Date: 2017-05-09
- Inventor: Guogen Zhang
- Applicant: FutureWei Technologies, Inc.
- Applicant Address: US TX Plano
- Assignee: Futurewei Technologies, Inc.
- Current Assignee: Futurewei Technologies, Inc.
- Current Assignee Address: US TX Plano
- Agency: Slater Matsil, LLP
- Main IPC: G06F7/00
- IPC: G06F7/00 ; G06F9/46 ; G06F17/30

Abstract:
System and method embodiments are provided for multi-version support in indexes in a database. The embodiments enable substantially optimized multi-version support in index and avoid backfill of commit log sequence number (LSN) for a transaction identifier (TxID). In an embodiment, a method in a data processing system for managing a database includes determining with the data processing system whether a record is deleted according to a delete indicator in an index leaf page record corresponding to the record; and determining with the data processing system, when the record is not deleted, whether the record is visible according to a new record indicator in the index leaf page record and according to a comparison of a system commit TxID at the transaction start with a record commit TxID obtained from the index leaf page record.
Public/Granted literature
- US20150278270A1 Systems and Methods to Optimize Multi-version Support in Indexes Public/Granted day:2015-10-01
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