US Patent:
20030014394, Jan 16, 2003
Inventors:
Shinji Fujiwara - Cupertino CA, US
James Lochowitz - Palatine IL, US
Michelle Kehrer - Plainfield IL, US
International Classification:
G06F007/00
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