it should be 2^(m-1)-1 because in given m elements 1 element should be primary key, which will combined with other attributes to form super key. so there will be 2^(m-1) such subset now we subtract 1 for the phi.so this should be 2^(m-1)-1.
correct me if i m wrong,,,,,,, -- You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/algogeeks?hl=en.
