Gotel and Finkelstein in IEEE International conference on requirement Engineering reported their research.
They concluded that that most of the traceability problem was because of inefficient pre-requirement traceability.
What is Pre-RST-
It deals with the aspects of requirements life prior to its inclusion in the final requirement specification.
It answer following—
⦁ Who holds responsibility for inclusion of particular requirement?
⦁ Who should be referred in case of confusion and more information?
⦁ Who holds the responsibility of copying the information in document?
⦁ Whether the requirement is meeting stakeholders or only one individual? why PRE-RST is hard-
They said the individual and groups that give rise to the requirements
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⦁ Depth of specification-it gives complete system specification. It insures that all relevant information has been captured in final specification and second thing is that all requirements are well defined and unambiguous.
It also maintains the relationship between contributors of information and information and between different requirements.
Result- IN spite these process tried their best but they have dome limitations
⦁ Contribution structure-It fails to satisfy inherent problems of individual and fails to establish a basis of agreement between different contributors
⦁ ProArt- It does not capture granularity of detailed structure.
The challenges of implementing cost-effective and successful traceability have created a broad research agenda that attempt to address a broad range of traceability issues ,that ranges from qualitative to very technical and quantitative studies. Now we are going to discuss the ongoing efforts of Center Of Excellence For Software Traceability (Cost).
Traceability Research are funded by government agencies like NSF,NASA and EU commission, as well as private industries . Thus the results have advancements in traceability methods. But these advances are hindered by lack of a publically available infrastructure. Thus New researchers waste significant time in establishing a research environment before going any further whereas seasoned
Functional requirements define the internal workings of the software: that is, the calculations, technical details, data manipulation and processing, and other specific functionality that shows how the use cases are to be satisfied. It also contains nonfunctional requirements, which impose constraints on the design or implementation (such as performance requirements, quality standards, or design constraints). Applied Software Project Management (2005)
The purpose of this document is to provide Stakeholders with an overview of the functionality of the BarCrawl application as well as how it will used. The Stakeholders of this Mobile App are Kent State Students who go to, or want to go to, the Bars near Kent State University’s Campus as well as the owners and managers of those bars. This application will available on devices that run on iOS or Android operating systems and have access to, and downloading privileges on, the App Store (Apple) or the Google Play Store (Android). The features and designs discussed in this document will be an accurate representation of what Stakeholders should expect to see in the final product.
It should be a user friendly as possible so as to eliminate the previous problems
The scope statement prepared prior to the project, focuses on the goals, the deliverables, and requirements. The three elements jointly have a role in the scope statement which will document the work and the structure of the project. The goals should target to be realistic, cost and quality measures, and have a time element. Having goals in place will determine the “what” of the entire project. The deliverables can be tangible, intangible, measured, or easily verified. Furthermore, it may involve good and services that can be provided to complete the project. As for requirements, it focuses on the specification of the deliverables. They describe the characteristics of the deliverables and may include elements such as dimension, ease of use, color, ingredients, and so on. (Heldman, 96).
Requirements Analysis is known as the process which allows us to understand the customer needs and expectation from proposed software. It is
Requirements are categorized as functional and non-functional. Functional (behavioral) requirements identifies/recognize the actions that are required to complete the user goals. For example, for a receptionist to create an appointment for the patient, he/she must take numbers of steps, such as logging into the system by providing appropriate ID/password, find patient in the system, select date/time/doctor for appointment, saves the appointment etc. One of the best ways of documenting functional requirements are use case. Functional requirements are what the user expects from the system/software. For example if the system is to schedule an appointment for patient, then that system should be able to create a new appointment, edit/modify the existing appointment, cancel/delete an existing appointment, etc. Basically, functional requirements defines what a system is meant to do and on the other hand, non-functional requirements defines how a system is supposed to be.
Requirements specified to achieve the end result. The overall definition of what the project is supposed to accomplish, and a specific description of what the end result should be or accomplish. A major component of scope is the quality of the final product. The amount of time put into individual tasks determines the overall quality of the project. Some tasks may require a given amount of time to complete adequately, but given more time could be completed exceptionally. Over the course of a large project, quality can have a significant impact on time and cost (or vice versa).
3. It should be rigorous: A highly detailed documentation of the interfaces is provided by the Data
Schedlbauer (2015) states, “A requirement is a condition or capability that must be met or possessed by a system or system component to satisfy a contract, standard, specification, or other formally imposed document”. Furthermore, requirements are highly variable due to business sponsors categorizing the high level requirements such as to lessen the cost of invoicing customers, whereas, other individuals lists explicit requirements for a user. Moreover, requirements must demonstrate completeness, accuracy, testability, feasibility, necessity, unambiguous, and priority It is a necessity to establish and link the priority of each requirement. Requirements that can be easily instituted due to budget and time are delegated the project scope (Schedlbauer, 2015).
This is the phase where the requirements are noted, feedback regarding requirements are obtained from users
Requirement elicitation is a critical and essential activity in the requirement engineering processes. It is a finite set of activities that complied in determination process of the system requirements. This includes identification of the system’s stakeholders, analysis of the current problem definition in application domain, an operating environment of the system and of all customers’ business and organizational environment. One of the major aspects in the failure of software projects is an improper system requirement.
It involves gathering and documentation of all the information related to the project., so that the project can be effectively profiled against potential delivery models and procurement methods.
Link traceability can also exist when requirements are decomposed from one stage to another. For e.g.
Requirement specification plays an important part in the analysis of a system. Only when the requirement specifications are properly given, it is possible to design a system, which will fit into required environment.
The purpose of the software requirements specification is to produce the specification of the analysis task and also to establish the complete information about the requirements, behaviour and other constraints such as functional performance and so on.