Method and system for collecting and retrieving time-series, real-time and non-real-time data
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United States of America Patent
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Nov 18, 2003
Grant Date -
Dec 26, 2002
app pub date -
Jun 21, 2002
filing date -
Jun 22, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Disclosed is a data collection and retrieval system that puts data produced by real-time and non-real-time data sources into parallel 'streams' or data files. Real-time data points are stored with time stamps in data files and non-real-time data points with time stamps are stored in other data files. Real-time data points are stamped with the times at which their data were collected. Non-real-time data points are stored in time-sequential order, the sequence time being the time of relevance rather than the time of collection. By referencing the streams that contain data points relevant to a given period, header files facilitate coordinated retrieval of data from multiple parallel streams. The time stamps allow the data points to be merged together into one coordinated, time-sequential data stream for analysis. The parallel stream data collection and retrieval technique allows operators to add or delete data sources without shutting down the process being monitored.
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