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Importance of software engineering in software development
Importance of software engineering in software development
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Software engineers must develop systems within the specified budget, schedule, and in a specific or systematic and organised approach to their work. A high-quality software must be produced. There are two reasons why software engineering is important: • It is cheap to use software engineering methods in the long run, since most individuals and society rely on advanced software systems. • Reliable, efficient, trustworthy and economically sound systems must be produced by software engineers. If good software engineering practices are not followed, this could lead to higher costs for testing the software, quality assurance (meeting standards) and long term maintenance. Software engineering makes use of software processes. According to Sommerville …show more content…
c) Software validation – it is a process of detecting errors to ensure that the system meets the customer’s needs or expectations and requirements. The Verification and Validation (V&V) process is used. d) Software evolution – is the process of making changes to a software to reflect customer and market requirements. System engineering and computer science are two main aspects related to software engineering. System engineering is concerned with all aspects of the development and evolution of complex systems where software plays a major role (Sommerville, 2016:23). System engineers need to specify the system, define its overall architecture and then integrate different parts to create a final system. According to Sommerville (2016:23), computer science deals with theories and methods that are used in computers and software systems, whereas software engineering is concerned with practical problems of producing a software. Software needs to have a thorough understanding of computer science, so as to apply theories and methods during software engineering. Computer science is mostly used when developing small programs. Essential attributes of a …show more content…
Methods, tools and techniques used to develop software depends on the vendor or organisation developing the software, type of software to be developed and people involved in the development process. The best practice to determine the most suitable software engineering methods, tools and techniques, is to understand the type of application being developed. The following are types of applications: a) Stand-alone applications - these are application systems which operate on a desktop or personal computers or mobile devices. In other words, they are independent since they include all the necessary functionalities. Also, stand-alone applications don’t need a network. Examples of such applications can be travel applications, photo manipulation software, office applications and so
The Software Development Life Cycle is seldom used at my place of work. Unfortunately, recent developments in its use are deemed confidential. Due to this fact, this paper will examine in general terms one of the projects we are undertaking right now while at the same time attempting to maintain our confidentiality.
Software design and development is a field that requires various skills and abilities. Companies engaged in the development of software should provide an inclusive work environment where the different strengths of their employees are recognised, utilised and respected. Software development involves far more than programming skills. Personnel are required with strong communication, teamwork, attention to detail, creativity, design and problem-solving skills. Different personnel will possess these skills in varying proportions. It is the job of management to foster and encourage the development and enhancement of skills in the workplace.
Some software systems have a relatively short lifetime (many web-based systems), others have a lifetime of tens of years (large command and control systems). Some systems have to be delivered quickly if they are to be useful. The techniques used to develop short-lifetime, rapid delivery systems (e.g. use of scripting languages, prototyping, etc.) are inappropriate for long-lifetime systems which require techniques that allow for long-term support such as design modelling.
Because of complexity and the way it (project) is too long each team member is assigned a task, making code for each programmer not to be too long. Both unit and module testing are accomplished here by software developers. The computer language like C++, Java, Pascal, COBOL and other programming languages is used for coding. On receiving system design documents, the work is divided in modules and actual coding is started. Since, in this phase the code is produced so it is the main focus for the developer. This is the longest phase of the software development life
Sommerville, I. and Sawyer, P. (2000) Requirements Engineering: A good practice guide. Chichester: Lancaster University.
In programming, computer engineers instruct computers how, to do their jobs or desired functions line by line. There are many forms of computer software engineers. There are computer applications software engineers who analyse user needs and designs and then build, maintain, or perfect specialized utility systems or applications already within the system. Computer applications engineers have a multitude of computer programming languages they have to use on a daily basis. Generally the favorite languages used are C, C++, and Java. The less popular languages that are used are Fortran and COBOL. Software engineers may also also develop packaged systems, systems software, or even create personalized applications. Computer systems software engineers are responsible for designing the maintenance and construction of a company's computer systems, while also planning the systems future growth. Computer systems software engineers analyse the needs of each specific department while working with a company and advise the company on which technical direction to follow. Computer systems software engineers often help set up the technical systems of the company within the departments. The computer systems software engineers will also sometimes set up the companies intranets systems. Specifically the ones that link the company's computer systems with the organization and make communications between departments run faster and smoother. Computer
The Systems Development Life Cycle (SDLC) consists of phases used in developing a piece of software. It is the plan of how to develop and maintain software, and when necessary, replace that software. In 2007 during my hospital’s transition to a new software system, I was fortunate enough to be included in the process. I did not get involved until the implementation phase, but from then on, until now, I remain very active in the process. I decided to highlight the Waterfall Model of SDLC. The Waterfall Model is a “sequential development process” with each phase continuing in a line (McGonigle and Mastrian, 2012, p. 205).
While developing a software many complex activities are required which in turn have dependencies along them. Large software projects require the involvement of programmers, documentation specialists, program managers, architects, database analysts, system analysts, , and trainers and last but not the least testers. Along with their independent responsibilities these persons are also responsible to maintain and keep a check on the software system quality as well.
Around fifty percent of the software development cost is expended in software testing. It consumes resources and gives nothing in terms of functionality. Much effort has been spent in the development of automatic software testing tools in order to reduce the cost of developing software.
Most of the software development projects change just during the development is in process. This is the reason that agile methodology is best for these projects. There is a room for change in them. Software developers follow these methods and this is the reason that they have further modified these methods according to the different types of projects they confront in their development time.
Given the time, it takes to develop large sophisticated software systems it not possible to define the problem and build the solution in a single step. Requirements will often change throughout a projects development, due to architectural constraints, customer’s needs or a greater understanding of the original problem. Iteration allows greater understanding of a project through successive refinements and addresses a projects highest risk items at every stage of its lifecycle. Ideally each iteration ends up with an executable release – this helps reduce a projects risk profile, allows greater customer feedback and help developers stay focused.
The field of Computer Science is based primarily on computer programing. Programming is the writing of computer programs using letters and numbers to make "code". The average computer programer will write at least a million lines of code in his or her lifetime. But even more important than writting code, a good programer must be able to solve problems and think logicaly.
Being a Software Engineer is more than just programming. It’s a chance to help other people through the power of technology. Having this as a job gives engineers the power to influence other peoples life through programs that could help them with day to day tasks. Software Engineering is an expanding occupation, which means that more and more jobs are opening up for this position everyday. Also, one of the perks of this job is how much money you make. Software Engineering is a good job because, the market is expanding for it, it pays well, and this job can help other people.
Every organization has unique reasons for automating software quality activities, but several reasons are common across industries.
Software engineering is important in today’s society because we use the products of software engineering almost daily. We use the products of software engineering in objects as simple as our car keys to objects as complicated as supercomputers. The past, present, and future of software engineering is quite interesting. This paper will provide information about this field of study and why software engineering is going to be around a while.