Caching pages via host variable correlation

Details Caching pages via host variable correlation Caching pages via host variable correlation

2011-03-22

2011-03-22

Hicks, Michael J (Department: 2165)

Data processing: database and file management or data structures

Database and file access

Record, file, and data search and comparisons

Reexamination Certificate

active

07912851

ABSTRACT:
A method, apparatus, system, and signal-bearing medium that in an embodiment track a history of statements that query data from a database. When a new statement is received, the history is searched for a correlation between the new statement and previous statements. The correlation is based on host variables in the history and the new statement. When a correlation is found, a prediction is made for the next statement to be received based on the previous statement in the history for which the correlation was found. The prediction is then used to retrieve pages from the database into a cache, which may be used by a subsequent statement.

REFERENCES:
patent: 6006225 (1999-12-01), Bowman et al.
Sapia, “On Modeling and Predicting Query Behavior in OLAP Systems”, Proceedings of the International Workshop on Design and Management of Data Warehouses, 1999.

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