1. A method of performing queries on unstructured data, the method comprising: receiving a query; accessing structured data in response to the query to identify a subset of unstructured data that is to be analyzed against the query; and performing a query-specified data analysis operation on the identified subset of unstructured data to thereby generate data for a response to the query; wherein the accessing step is conducted by a processor; and wherein the performing step is conducted by a coprocessor.