<FONT face=Verdana>Existing anonymity models for privacy preservation cannot implement individuation preservation oriented to sensitive values. To solve the problem

the paper proposes a complete (α

k)-anonymity model which can implement individuation privacy preservation for sensitive values by setting the frequency constraints on each sensitive value in every equivalence class. The paper also proposes a (α

k)-clustering algorithm to implement all kinds of (α

k)-anonymity models .Experimental results show that the complete (α

k)-anonymity model provides better privacy preservation than other (α

k)-anonymity models with the similar information loss and execution time.