Merging of Multiple Data Sets

A method may comprise comparing a first data set with a second data set, the first data set associating a first plurality of names with a first plurality of roles, and the second data set associating a second plurality of names with a second plurality of roles. The method may further comprise generating a third data set based on an outcome of the comparing, such that the third data set associates a subset of the first plurality of names with a subset of the second plurality of roles. Apparatuses, methods, and software for performing these and other functions are also described.