System and method for controlling access to a database

Details System and method for controlling access to a database System and method for controlling access to a database

2005-06-29

2009-11-10

Fleurantin, Jean B (Department: 2162)

Data processing: database and file management or data structures

Database design

Data structure types

C707S793000, C707S793000, C715S741000

Reexamination Certificate

active

07617212

ABSTRACT:
A database access controlling system controls the access to a database from a database access layer in an application, especially a relational database, with data sets that are being accessed concurrently by reading and writing transactions. The present system performs changes on the data by a writing transaction that place the changed data in a marked state. The changed data in the marked state enables concurrent transactions to recognize that the data has just been changed.

REFERENCES:
patent: 5280612 (1994-01-01), Lorie et al.
patent: 2002/0059324 (2002-05-01), Kitamura et al.
Keefe et al., Database concurrency control in multilevel secure database management systems, Dec. 1993, IEEE, 1039-1055.
Atluri et al., Alternative correctness criteria for concurrent execution of transactions in multilevel secure databases, Oct. 1996, IEEE, vol. 8, 839-854.
“A Technical Discussion of Multi Version Read Consistency”, IBM, Aug. 2002, All Pages.

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