Systems and methods are provided for evaluating data included in disparate data structures. One exemplary system comprises a first database including a first data structure having first data, and a second database including a second data structure having second data, where at least some of the second data is duplicative of at least some of the first data. The system also includes a computing device coupled to the first and second databases. The computing device is configured to request a first aggregate of the first data, receive the first aggregate, and load the first aggregate in an aggregate data structure. The computing device is further configured to request a second aggregate of the second data, receive the second aggregate, and load the second aggregate in the aggregate data structure, whereby a comparison of the first and second aggregates may be made.