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+Basically, and roughly speaking, requirements engineering, which is
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+also called in short, RE, is the process
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+of establishing the services that the customer requires
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+from the software system. In addition to that, requirements
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+engineering also has to do with the constraints
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+under which the system operates and is developed. Requirements
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+engineering is a very important activity for several
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+reasons. In particular, as we also saw in earlier
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+lessons, many errors are made in requirement specifications. So many
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+errors are made because we don't do requirements engineering in
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+the right way. And many of these errors are not
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+being detected early. But they could be if we were
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+to do RE in the right way. And, unfortunately, not
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+detecting these errors can dramatically increase software costs. So that's
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+the reason why requirements engineering is important, and why it
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+is important to do it in the right way. The final
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+result of the requirements engineering process is a software
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+requirements specification that we also called SRS. We will discuss
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+SRS later in more details and also when we talk
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+about the projects for the course. For now, it is
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+enough to say that the software requirements specification and
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+00:01:07,040 --> 00:01:10,280
+the requirements engineering, in general, should focus on what the
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+proposed system is intended to do, and not on the
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+how it will do it. In fact, how the system
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+will do what it is required to do is something that we
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+will discuss when we talk about design of a system in later phases.