Title:
トランザクションの整合性を保つ書き込み時コピーのデータベース
Document Type and Number:
Japanese Patent JP4583087
Kind Code:
B2
Abstract:
A database view of a database is created which provides a transaction-consistent view of an existing database at a previous time. Each database view contains all the information needed to, along with the primary database, determine the contents of the primary database at a previous time. The database view consists of a side file corresponding to each data file in the primary database. The side files contain a copy of all data from the corresponding data file which has been changed since the database view was created. Sparse files may be used for the side files in order to conserve space. Page table data is kept in order to allow a quick determination as to whether the page from the primary database has been modified and the old version stored in the database view side file.
Inventors:
Michael jay twilling
Louis S. Brook
Sammy H. Aggarwol
Yang Can Long
Louis S. Brook
Sammy H. Aggarwol
Yang Can Long
Application Number:
JP2004190397A
Publication Date:
November 17, 2010
Filing Date:
June 28, 2004
Export Citation:
Assignee:
MICROSOFT CORPORATION
International Classes:
G06F12/00; G06F11/14; G06F12/16; G06F17/30; G06F17/40
Other References:
ガルシア マルシ フロホック,Microsoft SQL Server 2000 オフィシャルマニュアル 下,日経BPソフトプレス,2001年 3月19日,初版,p.21-150
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe