Method and device for extracting information from a database
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United States of America Patent
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May 22, 2001
Grant Date -
N/A
app pub date -
May 21, 1997
filing date -
Sep 21, 1994
priority date (Note) -
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Abstract
The present invention relates to a method and a device for extracting information from a database, which comprises a plurality of data records, each data record comprising at least two data elements, each data element being defined by a data element type and a data element value. First, the data records are read into the primary memory of a computer, so that all processing of the data may be done off-line. Then, the data element values are binary-coded and stored in one or more tables. When the selection of at least one data element value is detected, all binary-coded data element values are examined to obtain all data records implied by selection. Due to the binary-coding, these data records are found very quickly. Finally the data element values implied by the selection is kept track of in a status set.
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