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The QUSMA Data Management System (QDMS) is a client/server system for acquiring, managing, and distributing low-frequency historical and real-time data, written in C#.

The server acts as a broker between clients and external data sources, as well as a local storage of historical data. The server UI allows its use without the need for a client application. Here's a rough view of how the systems are connected to each other.

A client library is provided which can access the server either locally or over a network, to request data, metadata, etc. A simple sample application showing usage of the client can be found here.

QDMS uses MySQL for storage, ZeroMQ and Protocol Buffers for client/server communications, MahApps.Metro for the interface, and ib-csharp to communicate with IB's TWS.

If you wish to contribute, fork the repo and send a pull request with your changes.

For bug reports, feature requests, and general discussion please use the google group.

• Manages metadata on stocks, options, futures, CFDs, etc.
• Downloads historical and real time data from external data sources.
• Local storage of historical data.
• Constructs continuous futures data.
• Schedule automatic data updates.
• CSV import/export.

• Instrument metadata.
• The main server interface.
• Adding a new instrument from IB.
• Importing CSV data.
• Editing futures expiration rules.
• Continuous futures options.

• Yahoo
• Interactive Brokers
• Quandl

• A reasonably recent version of MySQL.
• .NET 4.5

• Constructing low-frequency bars from higher frequency data.
• Support for more data sources.
• Support for fundamental data.
• Alternative (binary files) storage mechanism for tick data.
• Some sort of market-wide "snapshot" functionality.
• Far wider test coverage.
• Proper docs.