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Mastering Non-Functional Requirements
Mastering Non-Functional Requirements

Mastering Non-Functional Requirements: Templates and tactics for analysis, architecture and assessment

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Mastering Non-Functional Requirements

Taxonomy and Framework for NFRs

Establishing quality attributes is critical to the success of the applications, as is providing the business functionality. Incorrect customer information can lead to loss and damage to reputation, while poor response time will affect the morale and leads to eventual loss of customers.

Majorly, the approaches to architecture transformation are driven by business or functional requirements. The primary emphasis is on achieving business functionality for the applications or systems. Decisions on achieving functional requirements are done during the architecture or design phases, but for NFRs, they are often not methodical and are undocumented.

At times the quality attributes are often a consequence of other decisions, and done in an unplanned and ad-hoc manner.

The key topics covered in the chapter are as follows:

  • Taxonomy and framework
  • NFR SDLC
...

Taxonomy of non-functional requirements

This session describes the software quality attributes that an architect should emphasize while architecting the application.

Refer to the following table to gain a perception of how software quality attributes map to system factors, and the detailed description for each of the software quality attributes.

Later sections of this chapter contain best practice guidelines for each quality attribute, to understand how the attributes will impact the solution design and the dependent decisions to address these issues.

Remember that the list of quality attributes in this chapter is critical and will be essential to be considered for every application or IT system.

The following table describes all the critical software quality attributes covered in this book. It categorizes the attributes in four categories which includes runtime, design, system, and user. Leverage the following...

Summary

The chapter described the taxonomy of NFRs that is, scalability, availability, reliability and so on. The chapter outlined the entire life cycle of NFRs, The chapter described a framework that can leveraged by business analyst and architects for discovering NFRs on various engagements. The framework will focus on the KPIs and KRA for each of the NFRs which will be the critical input for the solution design phase.

The next chapter outlines methodology for discovering (elicitations) NFRs. The chapter will describe a framework that can be leveraged by business analyst for elicitations of NFRs. The chapter will outlines framework for prioritization of NFRs. The output of this stage will be the critical input for the solution architecture phase.

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Key benefits

  • Explains three stages of nonfunctional requirements, that is, analysis, architecture, and assessment
  • In-depth knowledge of NFR framework and taxonomy that provides guidance around the modelling phase for the NFRs
  • Coverage of 24 critical and pivotal NFRs, including the analysis, architecture, and assessment.

Description

Non-functional Requirements are key to any software/IT program and cannot be overlooked or ignored. This book provides a comprehensive approach to the analysis, architecture, and measurement of NFRs. It includes considerations for bespoke Java, .NET, and COTS applications that are applicable to IT applications/systems in different domains. The book outlines the methodology for capturing the NFRs and also describes a framework that can be leveraged by analysts and architects for tackling NFRs for various engagements. This book starts off by explaining the various KPIs, taxonomies, and methods for identifying NFRs. Learn the design guidelines for architecting applications and systems relating to NFRs and design principles to achieve the desired outcome. We will then move on to various key tiers/layers and patterns pertaining to the business, database, and integrating tiers. After this, we will dive deep into the topics pertaining to techniques related to monitoring and measurement of NFRs, such as sizing, analytical modeling, and quality assurance. Lastly, we end the book by describing some pivotal NFRs and checklists for the software quality attributes related to the business, application, data, and infrastructure domains.

Who is this book for?

The primary audience for this title are the gamut of roles starting from IT consultant to chief architects who are responsible to deliver strategic, tactical, and operational engagements for fortune 100 customers worldwide. Nonfunctional requirements are the key to any software / IT program. They cannot be overlooked or ignored. The book provides a comprehensive approach from analysis, architecture, and measurement of nonfunctional requirements. The book includes considerations for bespoke (Java, .Net, and COTS applications). These are applicable to IT applications from various domains. The book outlines the methodology for capturing the NFRs and also describes a framework that can be leveraged by analysts and architects for tackling NFRs for various engagements. The audience for this book include business analysts, enterprise architects, business architects, solution architects, technical architects/designers, domain/security/integration architects, software developers, support engineers and test engineers, technical project managers, project leads/technical leads/technical project managers, and students from the computer science/IT stream

What you will learn

  • Learn techniques related to the analysis, architecture, and monitoring of NFRs
  • Understand the various tools, techniques, and processes in order to improve the overall quality of the desired outcomes
  • Embrace the best practices of architecting, metrics, and success factors for NFRs
  • Identify the common pitfalls to be avoided and the patterns to leverage
  • Understand taxonomy and framework for NFRs
  • Learn the design guidelines for architecting applications and systems relating to NFRs
  • Abstract different methodologies to analyze and gather NFRs

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : May 18, 2017
Length: 230 pages
Edition : 1st
Language : English
ISBN-13 : 9781788299237
Category :
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Product Details

Publication date : May 18, 2017
Length: 230 pages
Edition : 1st
Language : English
ISBN-13 : 9781788299237
Category :
Tools :

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Table of Contents

7 Chapters
Understanding NFRs Chevron down icon Chevron up icon
Taxonomy and Framework for NFRs Chevron down icon Chevron up icon
Methodology Eliciting - Non Functional Requirements Chevron down icon Chevron up icon
Solutions Addressing NFRs Chevron down icon Chevron up icon
Architectural Patterns and its Impact on NFRs Chevron down icon Chevron up icon
Sizing, Measurement and Monitoring Chevron down icon Chevron up icon
Understanding Pivotal NFRs and Closing Thoughts Chevron down icon Chevron up icon

Customer reviews

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Full star icon Full star icon Full star icon Full star icon Half star icon 4.2
(10 Ratings)
5 star 60%
4 star 10%
3 star 20%
2 star 10%
1 star 0%
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AmazonBuyer Jul 16, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book offers a thorough coverage all NFRs.It is a great reference for seasoned and aspiring practitioners on NFR life-cycle.I found the guidance on frameworks and taxonomy very useful.It shares lessons, insights, and perspectives that will benefit practitioners, SMEs, and aspirants.I definitely recommend it...
Amazon Verified review Amazon
Amazon Customer Jul 18, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
It's an excellent book, a must read; provides very practical insights into topics and covers them well. A great reference for aspiring and practicing SMEs. The coverage is extensive in terms of depth and breadth of the NFR domains. The chapter of NFR framework and Taxonomy provides guidance around the modelling phase for the NFRs which is key phase in NFR lifecycle.
Amazon Verified review Amazon
Amazon Customer Jan 16, 2018
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Very good
Amazon Verified review Amazon
CUSTOMER Jul 17, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book offers a thorough coverage all NFRs. Is a great reference guide for seasoned and aspiring practionnares to guide them on NFRs lifecycle. There is a guidance on Frameworks and taxonomy to leverage for NFR solutioning. It shares learning, insights, and proven methodologies that will benefit practitioners, SMEs, and aspirants in the long run on the NFR domain.
Amazon Verified review Amazon
Vinit Garg Jul 07, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
This book has the right balance of tools and methods for delivering critical NFRs on engagements. This book offers a thorough introduction all critical and pivotal NFRs. I definitely recommend this book for SMEs who deal in the NFR domain.
Amazon Verified review Amazon
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