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IT Systems in Public Transport by Gero Scholz

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13 Informatics

Software engineers use models in order to describe IT systems. They create images for this purpose, which define connections between the different components of a system. In addition, they describe the individual components in a more or less standardised way.

Why a model?

Models are usually created for a specific IT system before it is developed. The earlier certain problems are recognised, the more inexpensive the modifications. If the system is then finished, it is often the case that further developments are only incorporated into the technical implementation, while the model continues to reflect the frozen historical state. To avoid this, modern software development environments attach great importance to consistency, so-called ...

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