1. A method, comprising: in response to determining that a client-specific data structure has been modified in a source coupled to each of a plurality of clients, generating, at each of the plurality of clients, a metadata specification from data structure metadata that includes attributes of the client-specific data structure; and generating, at each of the plurality of clients, data driven structure definitions from the metadata specification, wherein the data driven structure definitions from each of the plurality of clients are to be aggregated to form a common data model in a central server.