9. A computer-implemented data description and data delivery method, comprising: receiving, at a server computer via a network, an annotation of a data source, wherein the annotation comprises an association of a first global term with data for the data source; storing information on a data store, the information including descriptions of the data source, definitions of the first global term, and the annotation; receiving a client query to be run against the data store, the client query requesting an identification of data sources to which a respective vocabulary has been applied; determining, by the server computer, based on information stored in the data store, and in response to the client query, whether the respective vocabulary has been applied to the data source to annotate the data source in accordance with a set of global terms of the respective vocabulary; and providing, by the server computer, a second global term used for data source annotation in response to a query from a client device for global terms related to the first global term.
9. A computer-implemented data description and data delivery method, comprising: receiving, at a server computer via a network, an annotation of a data source, wherein the annotation comprises an association of a first global term with data for the data source; storing information on a data store, the information including descriptions of the data source, definitions of the first global term, and the annotation; receiving a client query to be run against the data store, the client query requesting an identification of data sources to which a respective vocabulary has been applied; determining, by the server computer, based on information stored in the data store, and in response to the client query, whether the respective vocabulary has been applied to the data source to annotate the data source in accordance with a set of global terms of the respective vocabulary; and providing, by the server computer, a second global term used for data source annotation in response to a query from a client device for global terms related to the first global term. 16. The system of claim 9 , wherein the first global term conveys meanings about the data for the respective data source, wherein the meanings are recognized by at least two different clients.