3. The system of claim 1 wherein the query value is a relative term normalized to be a value between zero and one.
1. A computer system including instructions recorded on a computer-readable medium, the system comprising: at least one processor processor; and a query handler configured to cause the at least one processor to receive a query for application against different combinations of a plurality of remote databases and a corresponding plurality of replica databases including at least some replicated data of respective ones of the remote databases, wherein each replica database is synchronized with a corresponding remote database at a plurality of scheduled synchronization times and the different combinations include future versions of the replica databases defined by corresponding synchronization times; and a query plan generator configured to cause the at least one processor to determine information values associated with at least a subset of the different combinations using an information value calculator that comprises: a computational latency (CL) calculator configured to cause the at least one processor to determine a time between a receipt of a result of the query and an issuance of the query for a particular combination; a synchronization latency (SL) calculator configured to cause the at least one processor to determine a time, for the particular combination, between the receipt of the result of the query and a relevant synchronization time of the plurality of scheduled synchronization times that is prior to or concurrent with the issuance of the query, and a parameter manager configured to cause the at least one processor to determine decay rates λ CL and λ SL for defining an extent of diminishment associated with each of the computational latency and the synchronization latency, respectively, wherein the information value calculator calculates the information value (IV) for the particular combination using the formula IV=QV(1-λ CL ) CL (1-λ SL ) SL , where QV refers to a query value associated with the query, and further configured to cause the at least one processor to generate, based on the information values, a query plan including at least one combination of the different combinations for executing the query therewith.