Metadata and data exchange method for multi-node data sharing

The invention relates to multi-node data sharing-oriented metadata and a data exchange method, metadata design comprises metadata composition structure design and metadata element design, and a metadata composition structure comprises data discovery information, data positioning information and data ownership information; the metadata elements comprise data discovery information class elements, data positioning information class elements and data ownership information class elements; the data positioning information class element comprises a data downloading address, the data ownership information class element comprises a data ownership unit, and the data downloading address and the data ownership unit form a data sharing element. According to the multi-node heterogeneous data sharing method and device, the metadata covers all kinds of data of the whole sharing life cycle of the multi-node heterogeneous data, fast right confirmation and data safe exchange of multi-node data sharing can be achieved, and the r