GLOBAL CACHING AND SHARING OF SQL STATEMENTS IN A HETEROGENEOUS APPLICATION ENVIRONMENT

摘要

A global cache for SQL sections and methods of accessing the cache. The global cache being at the database level and being accessible to all agents of all applications. The global cache having a static and a dynamic portion. The static portion containing section entries having both section information and section data. The dynamic portion having two sub-portions, a statement portion and a dependency portion. The dependency portion containing multiple SQL statements, multiple compilation environments for each SQL statement and multiple variations within each compilation environment. The dependency portion of the dynamic portion containing a plurality of lists of object types. Each object type having its own list, the list containing data on which variations are dependant on each object.