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Data Driven Decisions
book

Data Driven Decisions

by Joshua Jahani
October 2023
Intermediate to advanced content levelIntermediate to advanced
272 pages
5h 9m
English
Wiley
Content preview from Data Driven Decisions

Chapter 21Originating Requirements

Originating requirements are an evolution of use cases. They describe what a system should do on a factual and definitive basis, such that it is a requirement that the system performed the desired function. Otherwise, the system would be determined in a failure state. The most important technical component of requirements is that they use specific verbs, and those verbs most commonly are will or shall (Figure 21.1). A computer shall weigh ten pounds. An operator will log in at 8 am New York City time. These are requirements. They must happen in order for the system to function. This is different from use cases where – juxtaposed to a use case – the originating requirement is more definitive, and the use case is more fluid. The comparative use case in the two examples of requirements I just gave you would be considered something like “the operator will arrive at work in the morning.”

A table has two columns. They are, originating requirements and abstract function name. Row 1. A1, X Shall/Will Y, Startup.

Figure 21.1

Originating requirements describe a system and how it functions. They are the backbone of many systems engineering processes, and they identify how the product is expected to work down to a very specific level.

Originating requirements are not a marketing or sales statement. The best way to describe their purpose is to consider how they would be presented to a project manager. Imagine if, at any point, a project was handed off to a contractor or ...

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Publisher Resources

ISBN: 9781394202331Purchase Link