Domains of Software Engineering

Hazard VS Risk Hazard refers to things or actions that may cause harm to the system or its users whereas  risk is a combination of the probability of a hazard to occur and the severity of its impact on the systems, its users and its environment. For each hazard, the risk is assessed and if the risk is not acceptable but can be made tolerable, measures must be introduced to reduce it ALARP Safety Critical Systems These are the software responsible for operating systems involving a human life. These software are responsible for operating system providing the desired output without posing a threat to a human life involved in the operation. Examples of these systems consists of air crafts flying on auto-pilot, radiation machines such as Therac-25 etc. Safety Critical System: Therac-25 Radiation Machine Safety Assessment Ensuring safety for humans involved in a system's operation is of critical importance. This can be done either by testing or by implementing