1. A method of obtaining an answer to a query from a database, the method comprising: determining a query graph representative of the query via at least one processor; determining a first database graph representative of a first portion of information stored in the database via at least one processor; determining a first association graph based on the query graph and the first database graph via at least one processor; determining at least one characteristic of the first association graph via a quantum processor; storing information relating to the at least one characteristic of the first association graph in a computer-readable medium; determining a second database graph representative of a second portion of information stored in the database via at least one processor; determining a second association graph based on the query graph and the second database graph via at least one processor; determining at least one characteristic of the second association graph via the quantum processor; storing information relating to the at least one characteristic of the second association graph in the computer-readable medium; and ranking the at least one characteristic of the second association graph with respect to the at least one characteristic of the first association graph via a digital processor.