The document discusses different types of software requirements including functional requirements, non-functional requirements, and domain requirements. It also covers the different levels of requirements from user requirements to system requirements to software specifications. The introduction defines requirements as reflecting customer needs to solve problems, while the conclusion restates that requirements specify the services a system should provide.

1. Software
Requirements
Presented By:
Anil Pokhrel
BscCSIT VI sem

2. Contents
• Introduction
• Types of requirements
• Level of requirements
• Conclusion
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3. Introduction
 Requirements reflect the needs of the customer for the
system that helps to solve some problems.
 The process of finding out, analyzing and documenting
and checking these services and constraints is called
requirement engineering
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4. Types of requirements
 Funcitonal requirements
 Non-funcitonal requirements
 Domain requirements
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5. FUNCTIONAL
REQUIREMENTS
• The functional requirements discuss the functionality
required from the system
• The functional requirement for a system should describe
what the system do or perform.
• The functional requirements define specific facilities to
be provided by the system.
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6. Non- functional
requirements
• The requirements that are not directly concern with the
specific function of the system.
• They may related to emergent system properties such
as reliability, response time and storage occupancy.
• They may specify the performance, security, availability
and other property
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8. Domain requirements
Domain requirements are derived from the
application domain of the system rather than from
the specific needs of the system requirements
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9. Different Level of
requirements
 User requirements
 System requirements
 Software specification
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10. Conclusion
• A requirement is simply high level abstract statement of a
service that the system should provide.
• User requirements are statement of what services the
system is expected to provide
• System requirement set out the systems function, services
and operational constraints in detail
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11. References
 http://ecomputernotes.com/software-
engineering/softwarerequirement
 https://www.tutorialspoint.com/software_enginee
ring/software_requirements.htm
 https://www.geeksforgeeks.org/software-
engineering-classification-of-software-
requirements/
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