1. A method for integrating data of each of a plurality of different enterprise systems, comprising: acquiring user interface metadata for each of a plurality of enterprise systems, wherein the user interface metadata of an enterprise system corresponds to data in the same enterprise system and describes how the data should be presented on a user interface of the enterprise system; in response to acquiring the user interface metadata for each of the plurality of enterprise systems, generating a user interface presentation for each of the plurality of enterprise systems according to the user interface metadata; and establishing, for each of the plurality of enterprise systems, a first mapping between the user interface presentation and a structure of the data.