Parallelized rules processing system using associative memory for pipelined execution of plural join operations and concurrent condition comparing
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United States of America Patent
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Feb 13, 1990
Grant Date -
N/A
app pub date -
Jan 21, 1986
filing date -
Jan 21, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A plurality of devices for processing IF-THEN JOIN operation of IF-THEN rules are provided to process the JOIN operation in a pipe-line manner. A JOIN operation processing facility has an input buffer for latching status data corresponding to one condition in a certain rule; an associative memory for latching status data corresponding to another condition; an output buffer for latching the result of a JOIN operation; and a data combining arrangement for replacing an item value from the two data by a meaningful value to generate one data so that a series of operations of picking up the data one by one from the input buffer, retrieving associatively the data of the associative memory by using the data picked up as a retrieval data and the common item as a retrieval key, and storing in the output buffer the combined result of the data picked up and the retrieval data.
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