Assumptions about the to-be software users are described in the 'User characteristics' section of a requirements document, detailing their demographics and skills. Constraints and criteria define necessary limitations and measurable standards for the software design.
In a requirements document, assumptions about the to-be software users are usually described in the section labeled User characteristics. This section is intended to outline the demographics, skills, education level, and other relevant attributes of the users who will interact with the software. Understanding user characteristics is essential as it influences design decisions and ensures that the software is suited to the needs and limitations of its intended audience.
Criteria and constraints are also an important aspect of defining software requirements. A constraint refers to a limitation or condition that the software design must satisfy, while a criterion is a measurable standard or attribute that the software should meet. Both are used to evaluate and decide upon the best design solution from the many possibilities available.