What is defined as a condition that must exist for the use case to be initiated?

The term that refers to a condition that must exist for the use case to be initiated is known as a pre-condition. Pre-conditions are specific criteria or prerequisites that need to be satisfied before a particular use case can be executed. This concept is essential in use case modeling because it sets the stage for the beginning of the use case, helping to clarify the requirements and ensuring that the necessary conditions are in place for successful execution.

Understanding pre-conditions helps business analysts and developers identify what needs to be established in the system or the environment before the desired functionality can be used. This can include conditions like user authentication, system state, or specific data availability, thereby ensuring that the use case runs smoothly and achieves the intended outcomes.

In contrast, quality pertains to the attributes of the deliverables but doesn’t specifically outline conditions for initiating use cases. The solution option relates to different ways the requirements might be realized or implemented but does not define conditions for initiation. A state diagram visually represents states and transitions but is not focused on preconditions. Therefore, recognizing pre-conditions is crucial for requirement analysis and successful use case execution.