Stratus Technologies Bermuda Ltd.

Netezza Corporaton

Ibm International Group Bv

Dana A Kirkpatrick

Barry M Zane

Foster D Hinshaw

Premanand Yerabothu

James P Ballard

Finbarr Denis Long

Joseph Ardini

Michael James O'Keeffe

This invention relates generally to a system for processing database queries, and more particularly to a method for generating high level language or machine code to implement query execution plans. The present invention provides a method for generating executable machine code for query execution plans, that is adaptive to dynamic runtime conditions, that is compiled just in time for execution and most importantly, that avoids the bounds checking, pointer indirection, materialization and other similar kinds of overhead that are typical in interpretive runtime execution engines.

Optimized SQL code generation

Apparatus and methods for fault-tolerant computing using an asynchronous switching fabric where at least one of a plurality of redundant data processing elements executing substantially identical instructions communicates transactions to at least one target device, such as input/output device, or another data processing element. The transactions are communicated through the asynchronous switching fabric wherein each of the data processing elements and the target device are connected to the asynchronous switching fabric through a respective channel adapter.

Apparatus and methods for fault-tolerant computing using a switching fabric

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Northborough, MA, United States of America

Dana A Kirkpatrick