Dr. Wilbur H. (Bill) Highleyman brings more than forty years experience in the design and implementation of computer systems to his position as Chairman of The Sombers Group, Inc. SGI is a turnkey custom software house specializing in the development of real-time, on-line data processing systems, with particular emphasis on fault-tolerant systems and large communications-oriented systems. He is also Chairman of NetWeave Corporation, which developed the middleware product NetWeave. NetWeave is used to integrate heterogeneous computing systems at both the messaging and the database levels. Dr. Highleyman, a graduate of Rensselaer Polytechnic Institute and MIT, earned his doctorate in electrical engineering from Polytechnic Institute of Brooklyn. He has published extensively on availability, performance, middleware, and testing and is the author of “Performance Analysis of Transaction Processing Systems,” published by Prentice-Hall. He holds four patents and can be reached at billh@sombers.com.
Paul J. Holenstein is Executive Vice President of Gravic, Inc., the makers of the ITI Shadowbase line of data replication products. Shadowbase is a low latency, high performance real-time data replication engine that provides disaster recovery as well as heterogeneous data transfer. Mr. Holenstein has more than twenty-two years of experience providing architectural designs, implementations, and turnkey application development solutions on a variety of UNIX, Windows, and VMS platforms, with his HP NSK experience dating back to the NonStop I days. He was previously President of Compucon Services Corporation, a turnkey software consultancy. Mr. Holenstein’s areas of expertise include high-availability designs, data replication technologies, disaster recovery planning, heterogeneous application and data integration, communications, and performance analysis. Mr. Holenstein, an HP-certified Accredited Systems Engineer (ASE), earned his undergraduate degree in computer engineering from Bucknell University and a master’s degree in computer science from Villanova University. He has co-founded two successful companies and holds patents in the field of data replication. He can be reached at shadowbase@gravic.com.
Dr. Bruce D. Holenstein is President and CEO of Gravic, Inc. Gravic’s ITI Shadowbase software supports many of the architectures described in this book and operates on systems such as UNIX, Windows, NonStop and other platforms running databases including Oracle, Sybase, DB/2, and SQL/MP. Dr. Holenstein began his career in software development in 1980 on a Tandem NonStop I. His fields of expertise include algorithms, mathematical modeling, availability architectures, data replication, pattern recognition systems, process control, and turnkey software. Dr. Holenstein earned his undergraduate degree in Electrical Engineering from Bucknell University and his doctorate from the University of Pennsylvania. Dr. Holenstein has co-founded and run three successful companies and holds patents in the field of data replication. He can be reached at shadowbase@gravic.com.
