What are the major task of requirement engineering? Explain.

-

Requirement Engineering

- The process of collecting the software requirement from the client and then understanding, evaluating, and documenting it is called requirement engineering.

- Requirement engineering constructs a bridge for design and construction.

# Requirement engineering consists of seven different tasks as follows:

1. Inception

- Inception is a task where the requirement engineering asks a set of questions to establish a software process.

- In this task, it understands the problem and evaluates the proper solution.

- It collaborates with the relationship between the customer and the developer.

- The developer and customer decide the overall scope and the nature of the question.


2. Elicitation

- Elicitation means to find the requirements from anybody.

- The requirements are difficult because the following problems occur in elicitation.

° Problem of scope: The customer gives unnecessary technical detail rather than clarity of the overall system objective.

° Problem of understanding: Poor understanding between the customer and the developer regarding various aspects of the project like capability, and limitation of the computing environment.

° Problem of volatility: In this problem, the requirements change from time to time and it is difficult while develop the project.


3. Elaboration

- In this task, the information is taken from the user during inception and elaboration and is expanded and refined in elaboration.

- Its main task is developing a pure model of software using functions, features, and constraints of the software.


4. Negotiation

- In a negotiation task, a software engineer decides how will the project be achieved with limited business resources.

- To create rough guesses of development and access the impact of the requirement on the project cost and delivery time.


5. Specification

- In this task, the requirement engineer constructs a final work product.

- The work product is in the form of a software requirement specification.

- In this task, formalize the requirement of the proposed software such as informative, functional, and behavioral.

- The requirement is formalized in both graphical and textual formats.


6. Validation

- The work product is built as an output of the requirement engineering and that is accessed for the quality through a validation step.

- The formal technical reviews from the software engineer, customer, and other stakeholders help with the primary requirements validation mechanism.


7. Requirement management

- It is a set of activities that help the project team to identify, control, and track the requirements, and changes can be made to the requirements at any time during the ongoing project.

- These tasks start with the identification and assign a unique identifier to each of the requirements.

- After finalizing the requirement traceability table is developed.

- The examples of the traceability tables are the features, sources, dependencies, subsystems, and interface of the requirement.



Comments

Post a Comment

Popular posts from this blog

Suppose that a data warehouse for Big-University consists of the following four dimensions: student, course, semester, and instructor, and two measures count and avg_grade. When at the lowest conceptual level (e.g., for a given student, course, semester, and instructor combination), the avg_grade measure stores the actual course grade of the student. At higher conceptual levels, avg_grade stores the average grade for the given combination. a) Draw a snowflake schema diagram for the data warehouse. b) Starting with the base cuboid [student, course, semester, instructor], what specific OLAP operations (e.g., roll-up from semester to year) should one perform in order to list the average grade of CS courses for each BigUniversity student. c) If each dimension has five levels (including all), such as “student < major < status < university < all”, how many cuboids will this cube contain (including the base and apex cuboids)?

-
Image
a) A Snowflake Shema is shown in figure below: b) The specific OLAP operations to be performed: 1. Roll-up on course from course_id to department. 2. Roll-up on a student from student_id to university. 3. Dice on course, student with department ="CS" and university = "biguniversity" 4. Drill-down on a student from the university to student_name. c) N = 4 dimensions The cube will contain 54 = 625 cuboids.
Read more

Suppose that a data warehouse consists of the four dimensions; date, spectator, location, and game, and the two measures, count and charge, where charge is the fee that a spectator pays when watching a game on a given date. Spectators may be students, adults, or seniors, with each category having its own charge rate. a) Draw a star schema diagram for the data b) Starting with the base cuboid [date; spectator; location; game], what specific OLAP operations should perform in order to list the total charge paid by student spectators at GM Place in 2004?

-
Image
  b) The specific OLAP operations to be performed are: 1. Roll-up on date from date id to year. 2. Roll-up on spectator from spectator id to status. 3. Roll-up on location from location id to location name. 4. Roll-up on the game from game id to all. 5. Dice with status= “students”, location name= “GM Place”, and year=2004
Read more

Discuss classification or taxonomy of virtualization at different levels.

-
Image
Taxonomy of virtualization Virtualization is mainly used to emulate the execution environment, storage, and networks. The execution environment is classified into two: – Process-level – implemented on top of an existing operating system.  – System-level – implemented directly on hardware and does not or minimum requirement of the existing operating system. OR,  Virtualization covers a wide range of emulation techniques that are applied to different areas of computing. A classification of these techniques helps us better understand their characteristics and use  V irtualization is mainly used to emulate  ● Execution Environments: To provide support for the execution of the programs eg. OS, and Application.  ○ Process Level: Implemented on top of an existing OS that has full control of the hardware  ○ System Level: Implemented directly on Hardware and do not require support from existing OS.  ● Storage: Storage vi...
Read more