Briefly describe what is meant by a requirement (junctional, nonfunctional, and constraint). Briefly describe the eight characteristics of a good requirement. Briefly explain the eleven main...

Briefly describe what is meant by a requirement (junctional, nonfunctional, and constraint). Briefly describe the eight characteristics of a good requirement. Briefly explain the eleven main attributes that may be associated with each requirement. Briefly explain why system-level requirements should describe what the system should do rather than how it should be done.