Highlights we provide a standardsbased reference framework of system portability requirements. Traditionally one measure of portability was the number of different platforms that an application was available on. The more complex your code is, the harder it will be to maintain. The iterative and incremental development cycle implies that portability testing is regularly performed in an iterative and incremental manner. Portability testing is preferred when there is a requirement for the software component to be moved from one environment to another. Requirements convey the expectations of users from the software product. Functional requirements and nonfunctional requirements in.
Measure software editions and pricing measure flooring. Read the first chapter from building maintainable software, java edition, to learn exactly what maintainability means and how it has an impact on business. In this way the functionality of the software is limited to those calculation functions. Aug 22, 2016 first of all we should know that what portability testing is. Prioritizing them is necessary because the client will optimistically ask that you do all of them. Nonfunctional size measurement methods measure the technical artifacts of the software, usually the software code that is constructed. Pdf measurement model of software requirements derived. If you are working within a corporate environment and the software will be accessed through a documented list of devices and operating systems, it. There are also hybrid methods available that measure functional aspects, technical aspects and sometimes also environmental aspects of the software project in order to come up with a size, e. In software projects, it is most important to measure the quality, cost, and effectiveness of the project and the processes. This twopart series, adapted from my book more about software requirements, describes several meaningful metrics related to requirements activities on your projects. Historically it has been possible to measure software portability, by porting to a variety of platforms.
Measure for software adaptability university of texas at. Because requirements are an essential project component, you should measure several aspects of your requirements engineering activities. Often known as software qualities, or just the ilities usually cannot be implemented in a single module of a program the challenge of nfrs. To help you out, here is a quick list outlining my top 7 default ilities in the order that i prioritize them. Software reliability is the probability of failurefree software operation for a specified period of time in a specified environment. Approach based on the generic model of software proposed in the cosmiciso 19761 model. Requires onetime purchase of rfms online services setup. Your complete 3d measurement software demo request.
It did not make sense to measure conformance because there were so few standards. Nonfunctional requirements are vital to the success of software systems. This allows the functional size of such requirements allocated to software to be measured. Products faro software cam2 measure 10 system requirements. Components that fail this requirement could have profound effects on a. The published specification defines terms and characterizes software assurance evidence that can be used for judging whether a particular software system fulfills a given set of requirements.
Issues in the specification and measurement of software. Should not be confused with functional requfunctional requirements. A portability research group has been established at west virginia university to help meet this need. Software engineering software reliability measurement. A computer software application is considered portable to a new environment if the effort required to adapt it to the new environment is within reasonable limits. Nonfunctional requirements or nonbehavioral requirements are the properties of software such as portability, reliability, testability, e.
Without measuring these, a project cant be completed successfully. Measuring software maintainability is nontrivial and there exists no single metric to measure it accurately. Software testing portability testing geeksforgeeks. A measurement of portability is the effort that is required to move the software component from one environment to another environment. In todays article, we will learn with examples and graphs software test metrics and measurements and how to use these in the software testing. It differs from hardware reliability in that it reflects the design. Describe the ease with which the software can be transferred from one platform to another.
According to mccalls model, product operation category includes five software quality factors, which deal with the requirements that directly affect the daily operation of the software. Business owners have become better and better in expressing the functional requirements for the software. Describe the ease with which users are able to operate the software. Issues in the specification and measurement of software portability. Basically, as applied to the software product, a software metric measures or quantifies a characteristic of the software. High quality code is easier to work with and can be easily adapted to new requirements. Portability nonfunctional requirements are usually based on preliminary market research, field research activities, or analytics reports on the types of software and devices the target audience has. Adaptability testing functional test to verify that the software can perform all. The software requirements are description of features and functionalities of the target system. Maintainability is a multifaceted quality attribute each of the facets must be analyzed to objectively measure it. The prerequirement for portability is the generalized abstraction between the application logic and system interfaces.
Yes, i want a free nonfunctional requirement categories job aid. To fulfill these aims the following objectives have been identified. Measure integrates with leica disto d1, d2, e7100i and e7500i. A measure of some property of a piece of software or its specifications. An ideal solution to these problems will be the development and usage of metrics for all nfrs this will let the software be checked for the nfrs at all stages of its. Below are some examples of test metrics and methods for measuring the important aspects of software quality. What software quality really is and the metrics you can use. A comprehensive guide to measuring software quality. Software requirements l descriptions and specifications of. This paper proposes a measurement method to measure the nonfunctional portability software requirement. Examples of portability testing of an application that is to be portable across. Ian sommerville 2000 software engineering, 6th edition.
Portability testing is the process of determining the degree of ease or difficulty to which a. Ecss international standards, software portability. What software quality really is and the metrics you can. Nonfunctional requirement examples requirements quest. It is measured in terms of maximum amount of effort required to transfer from one. Although this is only the first in a series of specifications, it represents a promise leading to the creation of new tools related to software assurance. An ideal solution to these problems will be the development and usage of metrics for.
They do, however, require the view that the lifecycle of a software unit or system is not restricted. Measuring software maintainability quandary peak research. Identify and evaluate the current stateoftheart approaches, methods and strategies regarding software portability. A standardsbased reference framework for system portability requirements. Portability in highlevel computer programming is the usability of the same software in different environments. The 14 categories presented in the book, along with 5 additional categories, are explored in the ondemand course, nonfunctional requirements. Reliability metrics are used to quantitatively expressed the reliability of the software product. Technical requirements analysis begins with the business requirements documents created during the business analysis phase. Software reliability is also an important factor affecting system reliability. These changes may be necessary for the correction of faults, adaptation of the system to a meet a new requirement, addition of new functionality, removal of existing functionality or corrected when errors or deficiencies occur and can be perfected, adapted or action taken to reduce further. Test whether the application can fulfill the portability requirements. When software with the same functionality is produced for several computing platforms, portability is the key issue for development cost reduction. Chapter 3 technical requirements this chapter discusses some of the processes and procedures that occur during technical requirements analysis. Nonfunctional requirements and software quality attributes software quality classifications of nonfunctional requirements quality measures to measure is to know.
How easily you can modify or adapt your software for use by other teams, new purposes or changing requirements. Our overall goal is to develop improved methodologies for addressing portability in a costeffective way for a wide range of software. The chosen values, however, will have an impact on the. Additionally, the ram attributes impact the ability to perform the intended mission and affect overall mission success. The aim of the thesis is to practically investigate software portability in the context of mobile platforms, and develop a model for achieving portability. But when thinking outside the functional requirements be it usability, compatibility or performance the mind of a business owner often draws a blank. Measures and measurement for secure software development cisa. Software requirements descriptions and specifications of a system what is a requirement.
A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Designing a measurement method for the portability nonfunctional. It refers to system software or application software that can be recompiled for a different platform or to software that is available for two or more different platforms. Pdf a standardsbased model for the specification of portability. Software quality measurement quantifies to what extent a software program or system rates along each of these five dimensions. Our reference framework for system portabilitynfr lists specific portability functions derived from various standards. An aggregated measure of software quality can be computed through a qualitative or a quantitative scoring scheme or a mix of both and then a weighting system reflecting the priorities. A framework for system portability requirements cosmic. Spi, or software process improvement is different from overall process improvement or process reengineering, iso 91261 and other software quality models do not help measure overall process costs\benefits but only the software component.
Efficient measuring and testing of your software for quality is the only way to maximize the chances of releasing highquality software in todays fastpaced development environments. Some of the portability requirements for the project, in this case the vcs, can be derived by the stakeholders from our reference framework of system portabilitynfr, which could be allocated to software as portabilityfur. The following computer operating systems are supported. The requirements can be obvious or hidden, known or unknown, expected or unexpected from clients point of view. Measure software editions and pricing measure flooring software. Nonfunctional requirements software quality 2 an interesting phenomenon. The standard definition of reliability is the probability of zero. The results of portability testing are measurements of how easily the software component or. Important software test metrics and measurements explained. For example, it should be easy to port the software to a different operating system without the need to redesign the entire software. Projects are stored securely in our cloud serviceno need to worry about performing backups or having enough storage space. A standardsbased reference framework for system portability. Reliability, availability, and maintainability the mitre.
Results are measured in terms of the time required to move the software and. A breakthrough in productivity and portability vantage s. A major obstacle to meeting this goal is the lack of established mechanisms to specify and measure portability. Reliability, availability, and maintainability ram or rma are system design attributes that have significant impacts on the sustainment or total life cycle costs lcc of a developed system. An assessment of software portability and reusability for. Measure can estimate carpet, tile, laminate and hardwood flooring for projects of all sizes. Non functional requirements nfr play a critical role. Requirements are developed through requirements engineering. In the world of software architecture there are many ilities you must take into consideration with every project. Software which is maintainable and has high quality code is also more likely to have improved reliability, performance and security.
Measurement model of software requirements derived from system portability requirements conference paper pdf available january 2010 with 306 reads how we measure reads. Functional requirements include input that the software get and output it generates. The software portability research group at west virginia university is carrying on a variety of investigations related to these issues. Chapter 5 slide 2 objectives l to introduce the concepts of user and system requirements l to describe functional and nonfunctional requirements l to explain two techniques for describing system requirements l to explain how software requirements may be organised in a requirements document. A software requirements specification srs is a comprehensive description of the intended purpose and environment for software under development. Jan 28, 2015 badly defined performance requirements. When software with the same functionality is produced for several computing platforms, portability is the key issue. It is a type of testing in which software application is installed from one environment to other, may be from one platform to another platform with different hardware and software configuration. Nonfunctional requirements are global constraints on a software system e. Techniques for software portability in mobile development.
Software portability is often cited as desirable, but rarely receives systematic attention in the software. Maintainability is defined as the ease with which changes can be made to a software system. Measure is industryleading flooring estimation software that follows the workflow of the estimating process. A number of portability related concepts are dispersed throughout the ecss, ieee830, iso 9126, iso 24765, and iso 23821 standards to describe, at varying levels of detail, the various types of candidate portability requirements at the system, software, and hardware levels. The way to measure developer performance is to have excellent managers that do their job well, have good specs that accurately reflect requirements, and track everyones progress carefully against those specs. Sep 23, 20 because requirements are an essential project component, you should measure several aspects of your requirements engineering activities. This facilitates the specification of the system portability functions to be handled by software. Difficulttomaintain source code is a big problem in software development today, leading to costly delays and defects. Defining both functional and nonfunctional requirements in software engineering projects is important from both a business perspective and a performance perspective. However, no formal techniques have been reported to specify or measure portability. Portability testing guide with practical examples software testing. It differs from hardware reliability in that it reflects the design perfection, rather than manufacturing perfection.
The approach adopted in this research for the structure of this reference frame work is based on the generic model of software proposed in the cosmiciso 19761model, thereby allowing the functional size of the portability requirements allocated to software to be measured. Software is better if it is maintainable because it will take less time and cost to adapt it to users changing requirements. Portability, in relation to software, is a measure of how easily an application can be transferred from one computer environment to another. An aggregated measure of software quality can be computed through a qualitative or a quantitative scoring scheme or a mix of both and then a. Portability testing is a process of testing with ease with which the software or.
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