We recently published a case study describing how central banks worldwide rely on the Bank of Finland's MySQL based simulator.
The Bank of Finland (BoF) acts as Finland's central bank,
national monetary authority, and member of the European System of
Central Banks and the Eurosystem.
The BoF developed a MySQL based versatile system for making payments and settlement simulations, used for analyzing liquidity needs, risk issues, changes in authority policies & regulations, and more. Running on Windows, the application has been widely adopted by central bank economists worldwide.