Optimizing command execution in database systems that...

Details Optimizing command execution in database systems that... Optimizing command execution in database systems that...

2006-03-07

2006-03-07

Wong, Leslie (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000

Reexamination Certificate

active

07010552

ABSTRACT:
A procedure optimizes command execution in a database system. According to one embodiment, the database system stores data records on data pages, and provides an identifier for each data page. The identifier indicates when any of the data records contained in the data page were last modified. A data record is selected from a data page and copied to a second storage area. Verification that the selected data record has not been modified since the time that is was copied to the second storage area is based upon the identifier, and then the command is executed.

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