Data Grids are an innovative sweet spot taking advantage of existing computer science concepts in file systems, database systems and grid computing.
A Data Grid Management System (DGMS) is the software system used to manage a Data Grid. Data Grid Management Systems (DGMS), through multiple abstraction mechanisms provide a logical namespace that represents or hides the complexity of distributed data and heterogeneous resources. The logical namespace provided by DGMS is used to implement data grids, digital libraries, persistent archives and dataflow systems. DGMS software is being used or developed by multiple organizations that have requirements to manage petabytes of unstructured data.