Prof. Salvatore J. Stolfo

Department of Computer Science, Columbia University, New York, NY 10027
sal@cs.columbia.edu

Member of the Polytechnic University Center for Advanced Technology

ACE - The First Deductive (Expert) Database System

Prior to architecting DADO and implementing several prototypes, I worked with a colleague to design and implement ACE an "expert database analysis program" that was widely distributed throughout the nation's telephone wire centers. See the ACE brochure.

ACE was designed to access a deployed database management system that maintained up to the minute failure reports in the local telephone plant. By analyzing those reports using an "expert designed" knowledge base implemented in rule form, ACE produced plans for repair crews that were much more timely and accurate than previously possible. Before ACE, human analysts inspected daily failure reports to identify problems in the local telephone plant. After ACE, computers did the job much faster and more accurately. ACE was first invented by me and my co-developer in 1980-1982, and was the first widely distributed application that researchers today would call a Deductive Database application, or an Expert Database system, or an Active Database system.
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