Abstract: In one embodiment the present invention includes computer-implemented method of performing schema matching. The method includes storing, by a computer system, a schema mapping that includes nodes. The schema mapping indicates a relationship between a first schema and a second schema. The method includes displaying, at a first node of the plurality of nodes, a graphical indication of the schema mapping at the first node. The method includes receiving, by the computer system, an evaluation of the schema mapping at the first node according to a user evaluating the graphical indication. The method includes adjusting the schema mapping as a result of the user evaluating the graphical indication. The method includes stepping, by the computer system, to a second node of the plurality of nodes. The method includes further displaying, receiving and adjusting the schema mapping as related to the second node.