8. An apparatus comprising: at least one processor; and at least one memory including computer program code for one or more programs, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following: construct a reduced ordered binary decision diagram from a resource description framework graph; compute a hash identifier corresponding to the decision diagram; and cause, at least in part, a storing of the hash identifier with the decision diagram.
8. An apparatus comprising: at least one processor; and at least one memory including computer program code for one or more programs, wherein the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following: construct a reduced ordered binary decision diagram from a resource description framework graph; compute a hash identifier corresponding to the decision diagram; and cause, at least in part, a storing of the hash identifier with the decision diagram. 13. An apparatus of claim 8 , wherein the apparatus is further caused to: encrypt the hash identifier with a key to generate a keyed hash identifier of the decision diagram; and cause, at least in part, a transmitting of the keyed hash identifier and an identifier of the key in response to a query.