Software Requirements in Software Engineering

Introduction

• First phase in SDLC: Requirements
• Explains what requirements are and their types
• Mention of new study abroad channel

Definition of Requirements

• Formal definition: Services expected from a system (software/project)
• Example: Building a house (features like rooms, kitchen, washrooms)
• Gathering Requirements: Done via communicating with the user

Types of Requirements

Functional Requirements

• Description: Functionality of the system
• Details:
  • Describes functions provided by the system
  • Features satisfying customer needs
  • Should be complete and consistent
• Important Characteristics:
  • Complete: All user-expected services must be satisfied
  • Consistent: No contradictions in requirements

Non-Functional Requirements

• Description: Not directly related to system functionality
• Details:
  • Shows how features are provided (implementation)
  • More important than functional requirements
• Key Aspects:
  • Abstracted from the customer

Subcategories of Non-Functional Requirements

Product Requirements

• Specifies delivered product behavior
• Includes reliability, efficiency, and performance standards

Organizational Requirements

• Specifies organizational policies and procedures
• Includes rules, process standards, and implementation

External Requirements

• Arises from the external process of the system
• Includes interoperability (system compatibility with other systems)

Conclusion

• Summary of requirements types and their importance
• Reference to further topic discussions in upcoming videos
• Invitation for video/topic suggestions in comments