1. A method for transacting data, the method comprising: requesting, from a computing system, a meta-model expressing a data relationship, wherein the data relationship relates to a topology of a deployed computing system, and wherein the requesting specifies the meta-model from among a plurality of data models stored within the computing system; receiving, from the computing system, the meta-model; providing the meta-model to an application; receiving, from the application, a data transaction based on the meta-model; and issuing the data transaction.