Caching of distributed dynamic SQL statements in a multiple node RDBMS
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United States of America Patent
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Mar 5, 2002
Grant Date -
Feb 28, 2002
app pub date -
Sep 29, 1998
filing date -
Sep 29, 1998
priority date (Note) -
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Abstract
A method and system for caching dynamic SQL statements and their sections at different nodes in a multiple node Relational Database Management System (RDBMS) while maintaining cache and application integrity across all nodes. Each node in the RDBMS having a global cache shared by all applications on that node. One of the nodes in the RDBMS being a catalogue node which controls access to a database. The catalogue node maintaining a list of participating nodes that have requested access to the database controlled by the catalogue node. The list of participating nodes being used to notify each participating node of any changes to the database that may affect the validity of a dynamic SQL statement stored in the global cache of the node.
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