====== Requirements Engineering ======

Requirements' fields:

  * Product requirements: properties of a system or product
  * Process requirements: activities performed by an organization

Types of requirements:

  * Architectural requirements: architectural structure and behavior
  * Business requirement: goals, objectives, needs
  * User requirements: intended interaction
  * Functional requirement: capabilities, behavior
  * Quality-of-service requirement: reliability, testability, maintainability, availability etc.
  * Implementation (transition) requirement: role changes, education, migration
  * Regulatory requirement: laws, contracts, policies

Requirements' characteristics:

  * Unitary/cohesive
  * Complete
  * Consistent
  * Non-conjugated (atomic)
  * Traceable
  * Current
  * Unambiguous
  * Specified importance
  * Verifiable