Analysis of non-functional requirements of garbage collection system.

It is necessary to refine the original requirements put forward by users to form requirements specifications. The specific work contents are as follows:

1, which clearly describes the requirements elements (input, processing and output) to ensure the integrity of a single requirement description;

2. Clearly describe the relationship between demand points and define functional requirements;

3. Excavate non-functional requirements, and analyze the possible non-functional requirements of the system under a single function or business scenario according to the quality model.