Identifying files within a namespace

Details Identifying files within a namespace Identifying files within a namespace

2007-02-20

2007-02-20

Corrielus, Jean M. (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C714S002000

Reexamination Certificate

active

10293425

ABSTRACT:
An external request to perform a file operation within a resource manager is received. The resource manager selects a resource manager file identifier that is to be an attribute of a file associated with the file operation. The file operation and the resource manager file identifier are logged in a log entry of a log. Subsequent to logging the log entry, the log entry is accessed during a forward pass through the log, for example, during a roll-forward recovery. If it is determined that the resource manager file identifier in the log entry is assigned to the file, the first log entry is not processed. On the other hand, if it is determined that the resource manager file identifier in the log entry is not assigned to the file, the resource manager file identifier is selected to be assigned to a file when the first log entry is processed.

REFERENCES:
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patent: 5991772 (1999-11-01), Doherty et al.
patent: 6651077 (2003-11-01), East et al.
patent: 6856993 (2005-02-01), Verma et al.
patent: 2004/0122849 (2004-06-01), Nelson
patent: 2004/0122946 (2004-06-01), Hu et al.
patent: 2004/0143597 (2004-07-01), Benson et al.

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