Author Topic: What are the Non Functional Requirements  (Read 17214 times)

1202147611

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Re: What are the Non Functional Requirements
« Reply #75 on: May 05, 2021, 05:18:09 pm »
 Non-Functional Requirements determines the quality characteristic of a product framework. They judge the product framework dependent on Responsiveness, Usability, Security, Portability and other non-functional guidelines that are basic to the accomplishment of the product framework. Illustration of nonfunctional requirement, "how quick does application open?" Failing to meet non-functional requirements can bring about frameworks that neglect to fulfill client needs.

Types of Non-functional Requirements are:

?   Availability requirement
?   Scalability requirement
?   Interoperability requirement
?   Reliability requirement
?   Maintainability requirement
?   Regulatory requirement
?   Environmental requirement
?   Usability requirement
?   Serviceability requirement
?   Manageability requirement
?   Recoverability requirement
?   Security requirement
?   Data Integrity requirement
?   Capacity requirement

1211663501

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Re: What are the Non Functional Requirements
« Reply #76 on: May 29, 2021, 11:47:48 am »
NON-FUNCTIONAL REQUIREMENT (NFR) specifies the quality attribute of a software system. They judge the software system based on Responsiveness, Usability, Security, Portability and other non-functional standards that are critical to the success of the software system. Example of nonfunctional requirement, ?how fast does the website load?? Failing to meet non-functional requirements can result in systems that fail to satisfy user needs.

Non-functional Requirements allows you to impose constraints or restrictions on the design of the system across the various agile backlogs. Example, the site should load in 3 seconds when the number of simultaneous users are > 10000. Description of non-functional requirements is just as critical as a functional requirement.

The types of Non-Functional Requirements are listed below:

-    Usability requirement
-    Serviceability requirement
-    Manageability requirement
-    Recoverability requirement
-    Security requirement
-    Data Integrity requirement
-    Capacity requirement
-    Availability requirement
-    Scalability requirement
-    Interoperability requirement
-    Reliability requirement
-    Maintainability requirement
-    Regulatory requirement
-    Environmental requirement

Vibha Singh

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Re: What are the Non Functional Requirements?
« Reply #77 on: May 30, 2021, 06:52:47 pm »
NON-FUNCTIONAL REQUIREMENT (NFR) specifies the quality attribute of a software system. They judge the software system based on Responsiveness, Usability, Security, Portability and other non-functional standards that are critical to the success of the software system. Example of nonfunctional requirement, ?how fast does the website load??

Usability requirement
Serviceability requirement
Manageability requirement
Recoverability requirement
Security requirement
Data Integrity requirement
Capacity requirement
Availability requirement
Scalability requirement
Interoperability requirement
Reliability requirement
Maintainability requirement
Regulatory requirement
Environmental requirement

1202148911

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Re: What are the Non Functional Requirements
« Reply #78 on: June 01, 2021, 12:04:01 pm »
NON-FUNCTIONAL REQUIREMENT (NFR) specifies the quality attribute of a software system. They judge the software system based on Responsiveness, Usability, Security, Portability, and other non-functional standards that are critical to the success of the software system. An example of a nonfunctional requirement, ?how fast does the website load?? Failing to meet non-functional requirements can result in systems that fail to satisfy user needs.

Non-functional Requirements allow you to impose constraints or restrictions on the design of the system across the various agile backlogs. For example, the site should load in 3 seconds when the number of simultaneous users is> 10000. Description of non-functional requirements is just as critical as a functional requirement.

1210387404

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Re: What are the Non Functional Requirements
« Reply #79 on: June 03, 2021, 07:01:22 pm »
Non Functional Requirements capture that do not directly relate to the behavior or functionality of the solution, but rather describe environmental conditions under which the solution must remain effective or qualities that the system have. They are also know as quality or supplementary requirements. These can include requirements related to capacity, speed, security, availability and the information architecture and presentation of the user interface.

Sonia Baratam

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Re: What are the Non Functional Requirements
« Reply #80 on: June 28, 2021, 08:29:20 pm »
Non-Functional requirements: They capture conditions that do not directly related to behavior or functionality of the system, but rather describes the environmental conditions under which the system will remain effective like speed, capacity, security, stability, scalability, usability, etc., They are also known as quality or supplementary requirements.

It?s a backend process like speed/time taken to process that functionality, storage and security related.
Example Non-Functional Requirements are:
?   System response time should be less that 1000ms
?   All the details should have backup
?   System should be connected to internet 24/7


1200748711

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Re: What are the Non Functional Requirements
« Reply #81 on: July 14, 2021, 09:21:58 am »
Non Functional Requirements:
Non-functional requirement will describe how a system should behave and what limits there are on its functionality.
Non-functional requirements cover all the remaining requirements which are not covered by the functional requirements. They specify criteria that judge the operation of a system, rather than specific behaviors.
Example:
?Modified data in a database should be updated for all users accessing it within 2 seconds.?
Some typical non-functional requirements are:
1.Performance ? for example Response Time, Throughput, Utilization, Static Volumetric
2.Scalaility
3.Capacity
4.Availability
5.Reliability
6.Recoverability
7.Maintainability
8.Serviceability
9.Security
10.Regulatory
11.Manageability
12.Environmental
13.Data Integrity
14.Usability
15.Interoperability

1212490804

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Re: What are the Non Functional Requirements
« Reply #82 on: July 14, 2021, 10:55:30 pm »
Non Functional Requirements describe the conditions in which the solution/application should remain effective like speed, performance, capacity etc. They don?t directly relate to functional flow of the application.
SSD(Supplementary Support Document) is developed by Design team.

1210179203

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Re: What are the Non Functional Requirements
« Reply #83 on: July 25, 2021, 11:53:28 am »
Non functional requirements are best considered within a comprehensive and reasoned taxonomy based on two criteria: on one hand they do not deal with business requirements as such but with the way they are supported by system functionalities; on the other hand they are nonetheless bound to functional requirements and expressed at system boundaries. Looking at non functional requirements from an architecture perspective could provide a more consistent understanding.

1212282002

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Re: What are the Non Functional Requirements
« Reply #84 on: July 29, 2021, 11:30:03 am »
Non-functional requirements:-
 The conditions that do not directly link to the behaviour or functionality of the solution, but rather describe environmental conditions under which the solution must remain effective or qualities that the system must have. Mostly these requirements combine the capacity, speed security, availability and the information of architecture and presentation of the user interface

M.Y.Mahendra Nad

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Re: What are the Non Functional Requirements
« Reply #85 on: July 31, 2021, 10:30:50 am »
NFR are the constraints or the requirements imposed on the system. They specify the quality attribute of the software. Non-Functional Requirements deal with issues like scalability, maintainability, performance, portability, security, reliability, and many more. Non-Functional Requirements address vital issues of quality for software systems. If NFRs not addressed properly, the results can include:

Users, clients, and developers are unsatisfied.
Inconsistent software.
Time and cost overrun to fix the software which was prepared without keeping NFRs in mind.
Types of Non-functional Requirement :
Scalability
Reliability
Regulatory
Maintainability
Serviceability
Utility
Security
Manageability
Data integrity
Capacity
Regulatory
Availability
Usability
Interoperability
Environmental
These can can be classified as :

Performance constraints ?
Reliability, security, response time, etc.
Operating constraints ?
These include physical constraints (size, weight), personnel availability, skill level considerations, system accessibility for maintenance, etc.
Interface constraints ?
These describe how the system is to interface with its environment, users, and other systems. For example, user interfaces and their qualities (e.g., user-friendliness).
Economic constraints ?
Immediate and/or long-term costs.
Lifecycle requirements ? Quality of the design:
These measured in terms such as maintainability, enhance ability, portability.
Advantages of Non-Functional Requirement :

They ensure the software system follows legal and adherence rules.
They specify the quality attribute of the software.
They ensure the reliability, availability, performance, and scalability of the software system
They help in constructing the security policy of the software system.
They ensure good user experience, ease of operating the software, and minimize the cost factor.

12105103106

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Re: What are the Non Functional Requirements
« Reply #86 on: August 03, 2021, 09:07:42 am »
Non-functional requirements are conditions that are not directly related to the behaviour or functionality of the solution but describe the environmental conditions under which the solution must remain effective just like the quality supplementary requirements. Ex- Scalability, capacity, availability, reliability, etc.   

1210591304

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Re: What are the Non Functional Requirements
« Reply #87 on: August 09, 2021, 12:07:43 pm »
Simply said, a non-functional requirement is a specification that describes the system?s operation capabilities and constraints that enhance its functionality. These may be speed, security, reliability, etc. We?ve already covered different types of software requirements, but this time we?ll focus on non-functional ones, and how to approach and document them.

If you?ve ever dealt with non-functional requirements, you may know that different sources and guides use different terminology. For instance, the ISO/IEC 25000 standards framework defines non-functional requirements as system quality and software quality requirements. BABOK, one of the main knowledge sources for business analysts, suggests the term non-functional requirements (NFR), which is currently the most common definition. Nevertheless, these designations consider the same type of matter ? the requirements that describe operational qualities rather than a behavior of the product.

The list of them also varies depending on the source. And, frankly, it may differ for different products. For instance, if you intend to collect any user data and your website operates in the EU, you must meet GDPR compliance rules. In some cases, this may not be relevant to you. Or you may have additional compliance requirements if you process payments.

In this article, we?ll cover only the most common types that should make it to your checklist. However, there may be hundreds of them. Usually, such sources as BABOK list non-functional requirements in an isolated manner. We grouped some of them since the approaches to documenting these requirements overlap and some can?t be estimated without the other ones:

Performance and scalability. How fast does the system return results? How much will this performance change with higher workloads?

Portability and compatibility. Which hardware, operating systems, browsers, and their versions does the software run on? Does it conflict with other applications and processes within these environments?

Reliability, availability, maintainability. How often does the system experience critical failures? and how much time is it available to users against downtimes?

Security. How are the system and its data protected against attacks?

Localization. Does the system match local specifics?

Usability. How easy is it for a customer to use the system?

Performance and scalability
Performance defines how fast a software system or its particular piece responds to certain users? actions under certain workload. In most cases, this metric explains how much a user must wait before the target operation happens (the page renders, a transaction is processed, etc.) given the overall number of users at the moment. But it?s not always like that. Performance requirements may describe background processes invisible to users, e.g. backup. But let?s focus on user-centric performance.

Scalability assesses the highest workloads under which the system will still meet the performance requirements.

12110103605

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Re: What are the Non Functional Requirements
« Reply #88 on: September 06, 2021, 03:39:52 pm »
Non functional requirement defines system attributes such as security,reliability,performance,maintainability,scalability and usability.They serve as constraints on the design of the system across different backlogs

12119106406

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Re: What are the Non Functional Requirements
« Reply #89 on: September 22, 2021, 04:59:51 pm »
non functional requirement is which determine about the characteristics of non behavioral operations that not able to operate the functionality by using user interface mainly the non functionality is security,availability,maintenance,balancing,information of projects,etc.....