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Database Structure Disclosure Number: IPCOM000040438D
Original Publication Date: 1987-Nov-01
Included in the Prior Art Database: 2005-Feb-02

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Caraballo, JF Collins, WM Kemmerer, TR Mariano, MH Todd, RL [+details]


This article describes a technique for updating a database with speed and integrity. In an automatic parts inventory system each terminal station has a complete image of the database stored in its internal RAM memory. This 160K memory is the foundation for the entire system functioning smoothly and accurately. The technical name for this is a distributed database where every system has its own copy of the data. This data is stored in several files (collection of identical entries) which are interrelated according to very strict rules. The system checks the database of the system on an ongoing basis. If something is found to be wrong at a station, first that station and eventually the entire system will be shutdown automatically.