Cell-level data access control using user-defined functions
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United States of America Patent
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N/A
Issued Date -
Jan 16, 2003
app pub date -
Mar 22, 2001
filing date -
Mar 22, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Access control at the cell level is provided by the use of mask functions. Original queries are modified to contain mask functions for those cells which controlled access in accordance with an access policy is desired. In addition, filter functions are included to eliminate rows according to the access policy
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