railML (Railway Markup Language) is an open, XML based data exchange format for data interoperability of railway applications. The growing number of computer applications modeling different aspects of railway operations, with different operators developing separate solutions parallelly, bore a chronic difficulty of connecting different railway IT applications. The exchange of data for operation concepts, slot management, simulation or infrastructure planning, etc. was possible either by hand or with a lot of special developed interfaces with loss of time and cost problems for railway companies. If there are n applications that are supposed to exchange data, with a special interface for each pair of programs respectively, n ⋅ ( n − 1 ) 2 {displaystyle {frac {ncdot (n-1)}{2}}} interfaces are required — only one, if n=2, but 10, if n=5 — increasing the complexity above average. More information...
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