Pattern 15.5 Make a Context Model with Use Cases

Pattern 15.5, Make a Context Model with Use Cases Understand the collaborations with and around an object. 

Pattern 15.5, Make a Context Model with Use Cases Focus on the collaborations between your proposed system and other objects—people, machines, other software systems—with which it will interact. Also include relevant collaborations between them not involving your system, improving your understanding of what s going on around it. 

A business improvement effort may be triggered by the installation or upgrade of a software system, a perceived quality problem in business performance, or the hiring of a new senior executive. Although the explicit request may be simply to work on a software project, the analyst s scope often expands to include business improvement. This is part of what the system context diagram (see Pattern 15.5, Make a Context Model with Use Cases) is about—the computer system as one element in the design of a business process. 

The context is action refinement making decisions that implement or put more detail into an abstract (set of) actions. This may be part of a computer system design (Pattern 16.8, Basic Design) or part of the reengineering of a business process (Pattern 14.1, Business Process Improvement) and may in particular be the engineering of the business process of which using a computer system is a part (Pattern 15.5, Make a Context Model with Use Cases). 

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