Method and system of database management for replica database

Details Method and system of database management for replica database Method and system of database management for replica database

2006-01-03

2006-01-03

Choules, Jack M. (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C709S241000

Reexamination Certificate

active

06983277

ABSTRACT:
When a database area multi-written or replicated in an external storage unit is separated, a database management system writes consistent data into the external storage unit. A method and system capable of controlling a timing of separating the replicated database area is provided. Furthermore, new data directory information necessary to access the replicated database is dynamically added based on the data directory information of the replication source database. A method and system capable of selecting whether to access the database which is the source of the replication or access the replicated database are provided. Thus, when the database area multi-written or replicated in an external storage unit is separated and physical replicated databases are created, it is possible to maintain consistency of the replicated databases while continuing transaction processing.

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“Use in Conjunction with a Storage Area Network Further Increases the Operability of Microsoft SQL Server 2000,” Nikkei Open Systems 99:266-267 (2001).

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