US Patent 7966311 Systems and methods for processing queries

The present invention relates to systems and methods for processing queries. One embodiment of the invention provides a system for executing complex procedural queries across a plurality of databases. The system includes: a query processor capable of partial execution of procedural queries; a set of database adaptors capable of optimizing or and referring collections of queries to external databases; and a query cache component in communication with the query processor and the set of database adaptors. The query cache component stores the results of external database queries in a query cache and notes when a query has not been stored and records the same query.