We know that Software is a collection of executable programming code, associated libraries and documentations. Engineering on the other hand, is all about developing products, using well-defined, scientific principles and methods.
Software engineering is concerned with all aspects of software production from its early stages of system specification through the maintenance of the system after delivering it. Software engineering as an engineering branch associated with the development of software product using well-defined scientific principles, methods and procedures. The outcome of software engineering is an efficient and reliable software product. When compared to other branches Software engineering as discipline has progressed very far in
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System analysis and design relates to shaping organizations, improving performance and achieving objectives for profitability and growth. It mainly focuses on systems, processes and technology.
In this chapter we mainly discuss the processes used in the software development and models used in the development process.
1.2 Basic System Development Life Cycle
Software Development Life Cycle or SDLC is a process used by the software industry to design, develop and test high quality software. SDLC aims to produce high quality software that meets customer expectations, reaches completion within timeframe and cost estimates. It is a series of steps that software undergoes during its lifetime. It consists of a detailed plan describing how to develop, maintain, replace and alter or enhance specific software. The life cycle defines a methodology for improving the quality of software and the overall development process.
The following figure 1.1 is a graphical representation of the various stages of a typical SDLC. Figure 1.1
A typical Software Development life cycle consists of the following stages:
1. Planning and Requirement
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The testing process focuses on the logical internals of the software, ensuring that all statements have been checked.
6.Deployment:
After the testing has been done the software product is released formally in the appropriate market and tested in the real environment. Maintenance is done for the existing customer base after the deployment of the software.
1.3. Different Approaches and Models for Software Development
A software development process is the process by which user requirements are transformed in to a software product. A software process model is simplified, abstracted, description of a software development process. A process model is chosen based on the nature of the project and application, the methods and tools to be used, and the controls and deliverables that are required.
A software development process model should have a specific entry and exit point. A phase can start only if its phase-entry criteria have been satisfied. So without software life cycle model the entry and exit criteria for a phase cannot be recognized. A project’s development process defines the tasks the project should perform, and the order in which they should be done.
Now let’s start our journey through different process models.
1.3.1 Waterfall
1. Planning Before you want to jump right into planning, you want to meet with your client to talk about the project, you want to obtain certain information so that it can help you learn more about the project and whether or not the project should go ahead. Once you accept doing this project, you want to make sure that the client knows the requirements you’re looking for and whether they will meet your standard. For example, your payment estimates for future stages of the project.
The acceptance of the software from the end customer is also its part. Often, testing activities are introduced early in the software
Title: CERTIFICATE III IN EAL (Access) Unit Code: VU21470 Student Name: Man Theng Foong Student ID: GEC 00000 AK TASK 1 (page 6 ) • Lake Eyre ( South Australia ) • Lake Woods (Northern Territory ) • Lake Grace ( Western Australia ) • Margarat River ( Western Australia ) • West Lyon Rivers (Western Australia ) • Daly River (Nortern territory ) • Blue Mountain (New south wales ) • Bunya Mountain (Queensland )
In this modern world the need for designing and developing an application with good secure features is very high. I have also learned what an error exceptional handling is and why is it important in code review. I have also learned that in developing a software product or in the software development life cycle process, a software product must be teste in earlier stages and very frequently. This recalled my knowledge of secure software development life cycle. One must know the importance of secure software development life cycle.
P1: describe the potential prompt that initiate the installation of new upgraded software There are different reasons that would prompt people to upgrade their software. This could be the response to a bug that is identified or it can allow the hardware device to run more efficiently so that it can improve the functionality of the software when you upgrade it. You must be aware of these prompts so that when a software upgrade shows up you should always act with them in an appropriate manner in some situations it is important for ensuring the security of your computer systems. Problems with existing systems PC can become slower or develop a fault and to fix it, it would be necessary to install new software on the computer.
o 4A: Describe ethical and legal issues related to shared information within an organisation, and the related procedures and conventions for privacy and permission. BYOD • Operating systems-The software that supports a computer's most simple functions, such as scheduling tasks and controlling external systems eg. Printer, mouse. • Application software-Application software is different computer programs designed to allow the user to be able to perform tasks and activities.
Evaluation Single System Research Design in A Female Client in A Nursing Home Single system research design is a form of research that allows professionals to compare the performance of a single system before and after treatment. The single system may be an individual person, a single group, a single family, or a single organization. The goal in single system is to encourage positive behaviors, reduce negative behaviors. The target problem is equivalent to the dependent variable in group designs.
1:- Penetration Testing It is the process of trying to gain unauthorized access to authorized resources, systems and applications. Penetration testing is also known as an ethical hacking as “breaking into your own system to see how hard it is to do”. Network security measurement is the task which aims at supplying the scanning to check the security flaws and security threats in applications and networks. 2:- Why perform penetration testing • Test network or system using the tools and techniques that attackers use.
This detailed design should be easily converted to programming logic. It is at this stage the technology specifications for implementing the solution, logical structure of the application, design of WebPages, database designs etc are finalized. Test plans and test cases for the application are devised at this stage. Implementation phase – 5 weeks This stage involves implementing the design documentation using the technologies and platforms decided .For
Iterative and incremental approach is a better way of developing requirements and modules as well. 4. Requirements provide a complete operating picture of the solution, which helps in taking correct decisions during initial stages of software development life cycle (SDLC). Iterative and Incremental Approach This approach allows us to make changes before it is too late.
2. The scope of the application is pretty well-defined. There should be little to no changes to the requirements. 3. There is no need for iterative releases, since most of the requirements must be part of the application when released to
This approach centers on people, communications, the anticipated product and its flexibility. The concept of this approach is similar to that of the traditional management approach: generating plans and requirements, evolving the anticipated product, incorporating it with other products as required then testing it and debugging technical hitches if any is found, then lastly fitting it for use (Rose, 2010). In this approach, as a replacement for focusing on the phases all at once like it is done in the traditional approach, the entire project is fragmented into smaller segments known as scrums after which the scrums are taken as smaller projects and dealt with according to the traditional
Erasmus Mundus Master in Social Work with Families and Children 4th edition - 2016-2018 1st Semester Name: Rojika Maharjan 1. Social work has evolved with different “theories in social work”; either concepts derived from other social sciences such as psychology or sociology or “theories for social work” which are the core philosophy of social work practice specified to give a professional purpose and approach to practice (Healy, 2014). a) Regarding the context of children and families, system theory and strength theory are appropriate. i)
It is important to emphasize that these challenges were brought about by poorly defined goals and the scope was usually unclear. This meant the projects usually tended to go beyond the estimates as the project developers tried to fix newly developed ideas in to the development process. the phase gate model was developed to give an outline of the project development process to offer solutions for managing newly launched
Being good in science, mathematics and having a natural inclination towards programming since early school days has shaped my future ambitions. With a strong determination and a focused goal to become a software engineer, I pursued the Bachelor of Engineering (B.E.) degree in Information