An efficient hierarchy scheme for determining relationships in information systems

AbstractIn this paper, a dynamic user hierarchy mechanism based on key pairs is proposed. Through careful design of keys, we get an economic integer key pair for each user. In our scheme, the relationship between two users can be easily revealed by performing a simple formula to the key pair. Furthermore, by applying our scheme, whenever a new user is inserted into the user hierarchy system, the corresponding key pair can be determined quickly without changing any existing key pairs