Authorization specification and enforcement in federated database systems*

1997 ◽  
Vol 5 (2) ◽  
pp. 155-188 ◽  
Author(s):  
Sabrina De Capitani di Vimercati ◽  
Pierangela Samarati
2001 ◽  
Vol 6 (2) ◽  
pp. 69-79 ◽  
Author(s):  
Sushil Jajodia ◽  
Duminda Wijesekera

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