What are the Requirements Engineering Process Functions?
Subject
Software Engineering
Standard
Computer Science Engineering
Views
576
Asked By
Knowledge
Answer / Solution
Requirements engineering (RE) is the process of defining, documenting, and managing the requirements for a system. The RE process typically includes the following functions:
- Elicitation: This function involves gathering information about the system requirements from stakeholders. This information can be gathered through interviews, surveys, and workshops.
- Analysis: This function involves analyzing the gathered information to identify the system requirements. This includes identifying the functional and non-functional requirements, as well as the relationships between the requirements.
- Specification: This function involves documenting the system requirements in a way that is understandable to the stakeholders and the developers. The requirements specification should be complete, consistent, unambiguous, verifiable, and feasible.
- Verification: This function involves ensuring that the system meets the requirements. This can be done through testing, reviews, and inspections.
- Validation: This function involves ensuring that the system meets the needs of the stakeholders. This can be done through user acceptance testing and surveys.
The RE process is an iterative process, meaning that it is repeated throughout the development lifecycle. This is because the requirements of the system may change as the project progresses.
Here are some of the benefits of requirements engineering:
- Improved quality: Requirements engineering can help to improve the quality of the system by ensuring that the system meets the needs of the stakeholders.
- Reduced costs: Requirements engineering can help to reduce the costs of the system by identifying and avoiding unnecessary costs.
- Improved communication: Requirements engineering can help to improve communication between the stakeholders and the developers. This can help to avoid misunderstandings and delays.
- Increased customer satisfaction: Requirements engineering can help to increase customer satisfaction by ensuring that the system meets the needs of the customers.
Requirements engineering is a critical part of the software development process. By following the RE process, you can help to ensure that the system meets the needs of the stakeholders and that the system is successful in its intended use.
Here are some of the challenges of requirements engineering:
- Unclear or conflicting requirements: The requirements may be unclear or conflicting, which can make it difficult to define the system.
- Changing requirements: The requirements may change throughout the development lifecycle, which can make it difficult to keep the system up to date.
- Incomplete requirements: The requirements may be incomplete, which can lead to missing features or functionality.
- Unrealistic requirements: The requirements may be unrealistic, which can lead to delays or cost overruns.
Despite these challenges, requirements engineering is a valuable tool that can be used to improve the quality, cost, communication, and customer satisfaction of software systems.
Answer / Solution
The Requirements Engineering (RE) process functions are the activities and tasks involved in effectively gathering, documenting, validating, and managing requirements for a software system or product. These functions help ensure that the system being developed meets the needs and expectations of its stakeholders. The main functions of the Requirements Engineering process include:
Elicitation: This function involves understanding the needs and expectations of stakeholders by gathering information from various sources. It includes techniques such as interviews, workshops, surveys, and observations to identify, clarify, and prioritize requirements.
Analysis: In this function, the collected requirements are examined and analyzed to ensure their correctness, completeness, consistency, and feasibility. It involves identifying dependencies, conflicts, and potential risks associated with the requirements.
Specification: The analysis results are then documented in a clear and unambiguous manner in the form of requirements specifications. These specifications serve as a basis for communication and agreement between stakeholders, developers, and other project members. Various techniques such as natural language, use cases, and modeling languages can be used for specification.
Validation: This function focuses on verifying and validating the requirements to ensure that they are accurate, consistent, and feasible. Techniques such as reviews, inspections, and prototyping are used to identify and resolve any issues or ambiguities in the requirements.
Management: Requirements management involves controlling and tracking changes to requirements throughout the development lifecycle. It includes activities such as version control, traceability, and impact analysis to ensure that changes to requirements are properly documented, evaluated, and communicated to stakeholders.
Communication:
Effective communication is essential to ensure that requirements are clearly understood by all stakeholders. This function involves facilitating communication between stakeholders, managing expectations, and resolving conflicts or misunderstandings that may arise during the requirements engineering process.
Negotiation:
In situations where there are conflicting or competing requirements, negotiation is necessary to find a balance and reach a consensus among stakeholders. This function involves identifying trade-offs, managing conflicts, and reaching agreements that satisfy the needs of all parties involved.
Documentation:
Proper documentation of requirements is crucial for maintaining a record of decisions, assumptions, and changes throughout the development process. This function includes creating and maintaining requirement documents, diagrams, and other artifacts that capture the essential information related to the requirements.
It's important to note that the order and emphasis of these functions may vary depending on the specific RE methodology or approach being followed. However, these functions generally represent the core activities involved in the requirements engineering process.
Answer / Solution
The Requirements Engineering (RE) process functions typically include several activities that are performed to elicit, analyze, document, validate, and manage requirements throughout a software development project. While the specific steps and terminologies used may vary depending on the methodology or framework being followed, the following are commonly recognized functions in the RE process:
- Elicitation: This function involves gathering requirements from stakeholders, such as end-users, customers, business analysts, and domain experts. Various techniques, such as interviews, workshops, surveys, and observations, are used to identify and understand the needs and expectations of the stakeholders.
- Analysis: Once the requirements are elicited, the next function is to analyze and refine them. This includes activities such as prioritizing requirements, resolving conflicts or ambiguities, and ensuring that they are complete, consistent, and feasible. Analysis techniques like use case modeling, data flow diagrams, and system modeling may be employed to understand the system's behavior and structure.
- Documentation: Requirements need to be documented in a clear and unambiguous manner for effective communication between stakeholders and development teams. This function involves creating requirement specifications, which may include textual descriptions, diagrams, use cases, and other artifacts that capture the essence of the requirements.
- Validation: Validation ensures that the documented requirements accurately represent the stakeholders' needs and are feasible to implement. This function involves reviewing and evaluating requirements for correctness, consistency, verifiability, and traceability. Techniques like reviews, walkthroughs, and prototyping may be employed to validate the requirements.
- Verification: Verification focuses on ensuring that the implemented system meets the specified requirements. This function involves comparing the system against the documented requirements to identify any discrepancies or deviations. Techniques such as testing, inspections, and demonstrations are commonly used to verify that the system meets the desired functionality and quality.
- Management: Requirements are subject to change throughout the software development lifecycle. The management function involves establishing a systematic approach to handle requirement changes, trace requirements to their sources, and maintain version control. It also includes activities like configuration management, prioritization, and communication with stakeholders regarding requirement changes.
These functions are iterative and may overlap during the RE process. They help in understanding and capturing the stakeholders' needs accurately, ensuring that the developed software satisfies those needs, and managing changes to the requirements effectively.
Top Trending Questions
- 9116 Views Thomson’s model of an atom, explain how the atom is neutral as a whole.
- 5114 Views What are the main characteristics of peer to peer systems?
- 4675 Views Draw a plot of α-particle scattering by a thin foil of gold to show the variation of the number of the scattered particles with scattering angle.
- 3712 Views Difference between Synchronous and Asynchronous Transmission
- 3484 Views Explain protocols in details.
- 3432 Views Explain advantages and disadvantages of mobile computing.
- 3321 Views Differentiate between homogeneous and heterogeneous mixtures with examples
- 3065 Views Define olfactory indicators. Name two subtances which can be used as olfactory indicator
- 3059 Views Properties of the Real Number System
- 2939 Views The first term of an AP is 5, the last term is 45 and the sum is 400. Find the number of terms and the common difference.
- 2747 Views What are canal rays? Why anode rays are called canal rays. Mention two postulates of J.J. Thomsons Model
- 2714 Views What is the difference between interactive mode and script mode in Python?
- 2700 Views Different Data Mining Tools in details
- 2613 Views Explain various Access Modifiers in Java
- 2586 Views How do you download files using ftp?
- 2581 Views What type of information is provided by MIS and DSS?
- 2521 Views What is ftp? How do you use ftp?
- 2517 Views What do you mean by data archiving?
- 2510 Views What is animation? How are animated video clips generated? Also, What are the applications of computer graphics?
- 2492 Views What Is data mining? What is the role of data archiving in data mining?
- 2490 Views Adaptability and adaption in mobile computing.
- 2489 Views What is a text-to-speech system? What are its applications?
- 2478 Views What type of creative works are given copyright? What is the period of a copyright?
- 2466 Views What is a mainframe? What are the good and bad characteristics of a mainframe?
- 2462 Views What is a recordable CDROM? How does it work?
- 2413 Views Ramkali saved Rs 5 in the first week of a year and then increased her weekly saving by Rs 1.75. If in the nth week, fher weekly savings become Rs 20.75, find n.
- 2406 Views Where is the Sahara desert located?
- 2398 Views What is speech recognition? What are its applications?
- 2395 Views What do you understand by aerodynamically floating head?
- 2320 Views What is voice mail? What are the advantages and disadvantages of voice mail?
- 2317 Views Explain the design steps of the transform mapping.
- 2314 Views Explain different types of Data Mining Techniques.
- 2308 Views What is the basic difference between transaction processing system and MIS?
- 2293 Views What is the difference between transaction processing and on-line transaction processing
- 2263 Views Write the distribution of electrons in carbon and sodium atoms
- 2250 Views Necessary conditions for autotrophic nutrition
- 2230 Views What Are the Different Types of Machine Learning?
- 2224 Views Write first four terms of the A.P. when the first term a and the common difference d are given as follows
- 2217 Views What is a DVDROM? What is its typical capacity?
- 2204 Views How do you ensure information integrity?
- 2162 Views When will you say a body is in Uniform acceleration and non-uniform acceleration?
- 2162 Views Write advantages and disadvantages of Hierarchical Data Model
- 2160 Views Explain Atomic number, Mass number, Isotopes and Isobars with some examples. Also give any two uses of isotopes.
- 2126 Views How are water and minerals transported in plants?
- 2118 Views What does an Electrical Circuit Mean, Electrical Current and its units.
- 2112 Views What is telnet? How is it used?
- 2100 Views A sum of Rs 700 is to be used to give seven cash prizes to students of a school for their overall academic performance. If each prize is Rs 20 less than its preceding prize, find the value of each of the prizes.
- 2100 Views What is SRS? Why is it important? How does one arrive at a SRS?
- 2082 Views The houses of a row are numbered consecutively from 1 to 49. Show that there is a value of x such that the sum of the numbers of the houses preceding the house numbered x is equal to the sum of the numbers of the houses following it. Find this value of x. [Hint : Sx-1 = S49 – Sx ]
- 2081 Views Which term of the AP: 21, 18, 15, . . . is – 81? Also, is any term 0? Give reason for your answer.
- 2065 Views Naresh earns 30800 per month. He keeps 50% for household expenses. what he save per month
- 2063 Views What is feasibility analysis? How is it used?
- 2059 Views What are the factors which influence the adsorption of a gas on a solid?
- 2055 Views Write a note on civilizing mission of the colonisers and Huynh Phu So
- 2052 Views Calculate the molecular masses of the following elements, Hydrogen, Oxygen, Chlorine, Carbon Di Oxide
- 2050 Views 60 percent of the students in a school are girls, If the total number of girls in the school is 690
- 2035 Views 1500 families with two children are selected randomly according to the data given. Compute the probability of a family, chosen
- 2027 Views What is rational number
- 2013 Views Define parallel connection and series connection?
- 2010 Views What is the role of desorption in the process of catalysis?
- 2009 Views What are the activities carried out during system implementation phase?
- 2006 Views Why did James Mill and Thomas Macaulay think that European education was essential in India?
- 1984 Views Explain how data mining may be used by a State Road Transport Corporation
- 1976 Views Nested Loops in C
- 1967 Views What are the different parts of a URL? Explain the purpose of each part
- 1964 Views Explain in detail about Tableau in data visualization?
- 1957 Views What rights does copyright give to the owner of the copyright?
- 1942 Views How will you find the valency of chlorine, sulphur and magnesium?
- 1924 Views What are polyatomic ions? Give examples?
- 1917 Views Describe the ideas behind the Tonkin Free School. To what extent was it a typical example of colonial ideas in Vietnam.
- 1915 Views The sum of the third and the seventh terms of an AP is 6 and their product is 8. Find the sum of the first sixteen terms of the AP.
- 1915 Views Class 8 Quiz MCQ Basic Questions
- 1899 Views A long solenoid with 15 turns per cm has a small loop of area 2 cubic cm placed inside the solenoid to its axis.
- 1889 Views What’s the difference between a generative and discriminative model?
- 1881 Views looping structure in python
- 1872 Views What is meant by Intellectual Property Rights (IPRs)?
- 1854 Views Which gas is usually liberated when an acid reacts with a metal?
- 1834 Views In a cricket match, a batsman hits a boundary 6 times out of 30 balls she plays. Find the probability that she did not hit a boundary.
- 1809 Views 2 cubes each of volume 64 cm3 are joined end to end. Find the surface area of the resulting cuboids.
- 1806 Views What is open source software? List some open source software.
- 1797 Views How is our atmosphere different from the atmospheres on Venus and Mars?
- 1778 Views Difference between Artificial intelligence and Machine learning
- 1772 Views Connect python to mysql database
- 1771 Views Explain the inference rules for functional dependencies in DBMS
- 1770 Views What is system evaluation? Why is it required?
- 1768 Views What is the syntax of Java Inheritance? Explain with example.
- 1731 Views Distinguish between speed and velocity.
- 1711 Views What is data Mining.
- 1705 Views What is Internet telephony? In what way is it different from Internet radio?
- 1703 Views If the sum of the first n terms of an AP is 4n − n2, what is the first term (that is S1)? What is the sum of first two terms?
- 1696 Views What is a Trojan? In what way is it different from a virus? How do you remove a Trojan from your PC?
- 1653 Views Explain why, when a motorcar makes a sharp turn at a high speed, we tend to get thrown to one side.
- 1648 Views What is a mobile computing?
- 1610 Views What is Internet radio? What are the advantages and disadvantages of Internet radio.
-
1603 Views
Check whether the following is quadratic equation:
(x + 1)2 = 2(x – 3) - 1601 Views Distinguish between the meaning of the terms adsorption and absorption. Give one example of each.
- 1584 Views What is Inheritance in Java? Explain.
- 1583 Views Why did a major protest erupt in 1926 in the Saigon Native Girls School in Vietnam ? Explain.
- 1577 Views How soil is formed?
- 1564 Views What is vector graphics? Where are vector graphics used?
- 1553 Views feature of mobile computing
- 1550 Views To counter the Chinese influence what steps did the French take in the sphere of education?
- 1543 Views Achievements of the Hindustan socialist Republican Association
- 1539 Views How do you know that your PC has been infected by a virus? If it is infected. how do you remove the infection?
- 1536 Views What is a computer virus? How does it infect computer systems?
- 1533 Views What is the difference between MIS and DSS?
- 1531 Views The sum of 4th and 8th terms of an A.P. is 24 and the sum of the 6th and 10th terms is 44. Find the first three terms of the A.P.
- 1523 Views What is plagiarism? Is copyright violation a criminal offence?
- 1498 Views Give an example of client-server computing
- 1495 Views What is a thin client? Why are thin clients preferred in certain applications?
- 1492 Views Types of data in mobile computing
- 1484 Views What are the three types of intellectual property? What kind of rights does IPR on computer software normally give?
- 1459 Views Shweta obtained 18 marks in a test of 25 marks. What was her percentage of marks
- 1452 Views How do you ensure security of your database?
- 1443 Views Data Mining History
- 1438 Views What is mathematics
- 1438 Views List some IT related products which are given patent rights and trademarks.
- 1426 Views What is information integrity? How is it different from data security?
- 1422 Views Two spherical bobs, one metallic and the other of glass, of the same size are allowed to fall freely from the same height above the ground
- 1407 Views What is data security? What is the difference between data privacy and security?
