Method and apparatus for copying data that resides in a database

Details Method and apparatus for copying data that resides in a database Method and apparatus for copying data that resides in a database

1998-02-27

2000-08-15

Ho, Ruay Lian

Data processing: database and file management or data structures

Database design

Data structure types

707 2, G06F 1730

Patent

active

06105030&

ABSTRACT:
A consistent set of data is supplied to a software application from databases. When a particular set of data is identified, a first process is requested to obtain a snapshot time from a database server associated with the first database. The snapshot time causes all subsequent reads of the first database by the first process to return data that reflects a database state associated with the snapshot time. A first set of data in the first database is locked in order to produce a copy of data from a first database. After locking the first set of data, a plurality of processes are requested to obtain snapshot times from a database server associated with the first database. The snapshot times cause all subsequent reads of the first database by the plurality of processes to return data from the first database as of the snapshot times.

REFERENCES:
patent: 5168444 (1992-12-01), Cukor et al.
patent: 5560005 (1996-09-01), Hoover et al.
patent: 5724575 (1998-03-01), Hoover et al.

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