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The ITER Superconducting Magnet Manufacturing Database, MMD, is not only a data archive, but also a common communication platform, on which contributors to magnet manufacturing collaborate and take coordinated actions. In-kind procurement is a feature of the ITER construction. The magnet system construction involves six Domestic Agencies (DAs) plus contractors in these DAs. The six DAs are EU, Japan, Russia, the USA, Korea and China. The magnet system consists of many components like TF coils and current feeders. The ITER Organization (IO) monitors and controls quality throughout the manufacturing process. This is fundamental because the IO takes responsibility for the ITER machine even though not all large components can be tested under nominal conditions before their acceptance. For many contributors though (who have different cultures, quality assurance systems and languages), quality monitoring and control (QA/QC) represent big challenges. MMD is the web-based application that gives all contributors access to the IO server computer according to deflned privileges. Users can upload and consult updated manufacturing processes, associated drawings, procedures, inspection reports, etc.; more over, they can communicate internationally and visualize identical, updated and systematically stored datasets. The data stored in the database will be available in future site assembling and operation phases. Technically, the database is an application of ICP (ITER Collaborative Platform). ICP is a software framework for implementing database-driven applications for the ITER project. It provides a standardized web browser interface and data storage. This paper presents the design and functionality of MMD.