Priciples of Software Engineering free essay sample

Describe each law in your own words. Illustrate with a practical example ? Glass’ law â€Å"Requirement deficiencies are the prime source of project failures Coming to my explanation Glass law states that if the basic requirements of the projects is not constructed properly that may leads failure of the project. To achieve goals in the project it plays an vital role and any drawbacks may leads project unsuccessful. Around 20% of all IT project failures were caused by incomplete or badly managed requirements. Example: Technological University-Online Practical Tests In the case of technological university the requirements specifications for the online practical exams had been implemented without consulting students and university staff. This system was designed in such a way that students affliated to that university are write the test test online at the same day and same time. Considering the requirements of the colleges were different an the project objectives were different. This leads to failure of the that project. We will write a custom essay sample on Priciples of Software Engineering or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page Boehm’s first law â€Å"Errors are most frequent during the requirements and design activities and are the more expensive the later they are removed†. Coming to my explanation Boehm’s law states that the basic designing of the projects mat leads to errors and miscalculations. The sooner you find a problem, the cheaper it is to fix , otherwise to detect the errors in the project is very expensive or complicated . This law is applicable from midrange systems. Example: City Council – Pay Roll System A city council developed a replacement payroll system believed that users had comprehensive knowledge of all the business requirements. But the current staff or IT team had participated in building the old system they had no knowledge of how it was built. That leads to many errors and it cause project failure. Boehm’s second law â€Å"Prototyping (significantly) reduces requirement and design errors, especially for user interfaces†. Coming to my explanation Boehm’s second law states that by prototype modelling the disigning of the project and errors can be reduced. To design the system the staff will be educated . So that that will increase the usability of the system among users. Example: In a postgraduation course prototype modelling experiments were conducted . Some of them were used requirement driven approach and others are prototyping approach. This will leads to satisfaction for the client compare to all other methods. Davis’ law â€Å"The value of a model depends on the view taken, but none is best for all purposes†. Coming to my explanation Davi’s law states that to describe systems requirements, it is very useful. This model is useful to solve the complicated tasks that other models find that difficult to solve. Example:In a system to solve the problems different methods were implemented. Each task follows their methodolgies to solve the problems. At the end all the methods got different results but there methodologies is useful to solve the problem. Your first task is to describe each software development methodology clearly and completely in your own words. You may use diagrams, examples or UML to help you do this. Waterfall Model : The waterfall model is a sequential software development process, in which progress is seen as flowing steadily downwards through the phases of conception, design, analysis, initiation ,testing and maintenance. This model is used in manufacturing industries and construction industries . It is ; highly structured physical environments in which after-the-fact changes are prohibitively costly, if not impossible. Since no formal software development methodologies existed at the time, this hardware-oriented model was simply adapted for software development. For example, one first completes requirements specification, which after sign-off are considered set in stone. When the requirements are fully completed, one proceeds to design. Spiral Model: The spiral model is a software development process combining elements of both design and prototyping-in-stages, in an effort to combine advantages of top-down and bottom-up concepts. Each phase starts with a design goal and ends with the client reviewing the progress . Analysis and engineering efforts are applied at each phase of the project, with an eye toward the end goal of the project. The spiral model might mean that you have a rough-cut of user elements as an operable application, add features in phases, and, at some point, add the final graphics. The Spiral model is used most often in large projects and needs constant review to stay on target. It can get their hands in and start working on a project earlier. Q3) Using the first four laws of the text, show where these are either implemented or missing in each software development methodology (Total Two). If a law is missing, explain the consequences and suggest how the process might be improved. Water Fall Model Glass’ law Requirement deficiencies are the prime source of project failures. The end users gathered by requirements in waterfall model. It states that the basic requirements of the projects is not constructed properly that may leads failure of the project. The failures were caused by incomplete or badly managed requirements. Boehm’s first law â€Å"Errors are most frequent during the requirements and design activities and are the more expensive the later they are removed†. It basic designing of the projects mat leads to errors and miscalculations. In waterfall model this law cannot be able to correct the errors. This law is not reliable for waterfall model. Boehm’s second law Prototyping (significantly) reduces requirement and design errors, especially for user interfaces†. This law cannot be able to correct the errors in waterfall model. The design phase would be reduced by prototype modelling. Davis’ law â€Å"The value of a model depends on the view taken, but none is best for all purposes†. The purpose of this model is not suitable for this law. Spiral Model Glass’ law â€Å"Requirement deficiencies are the prime source of project failures In waterfall model risk analysis is conducted on the prototype. By this if they need any requirement it will included in next stage. Boehm’s first law â€Å"Errors are most frequent during the requirements and design activities and are the more expensive the later they are removed†. In spiral model each phase starts with a design goal and ends with the client reviewing the progress . The risks were eliminated after number of stages. Boehm’s second law â€Å"Prototyping (significantly) reduces requirement and design errors, especially for user interfaces†. In spiral model it will design the prototype. and construct and design the prototype. The analysis and engineering efforts are applied at each phase of the project.

Essay on Bone and Ligaments

Essay on Bone and Ligaments Essay on Bone and Ligaments the musculoskeletal system The skeletal system skeletal system includes the bones of the skeleton and the cartilages, ligaments, and other connective tissue that stabilize or connect the bones. In addition to supporting the weight of the body, bones work together with muscles to maintain body position and to produce controlled, precise movements. Without the skeleton to pull against, contracting muscle fibers could not make us sit, stand, walk, or run. The bones of the body perform five major functions Provide support for the body ,Store minerals and lipids ,Produce blood cells ,Protect body organs , and Provide leverage and movement. Two elements of this system that can be noted are the ligaments and the tendons. The tendons play a major role by connecting muscle to bone and also supporting their functions. Tendons are the main connective tissue in the body which hold the whole skeletal frame together. In tandem with muscles and ligaments tendons help in the mechanics of movement and provide form and function to our body. Tendons are made up of dense connective tissue which contain collagen fiber in the form of small bundles, tendons also consist of fibroblast. Fibroblast are typical cells that are known to regenerate or reproduce the collagen fibers. Some things that tendons enable us to do are things like running, jumping, walking, swimming, etc. tendons are also referred to as sinews. ligaments are a fibrous connective tissue which attaches bone to bone, and usually serves to h old structures together and keep them stable. Ligament tissue is made up of different grades of collagen, and connective tissue,to attach bone to bone within the body. This tissue type performs some main duties, including joint protection and positional information for the brain. Ligaments have extreme strength, but can become damaged from injuries. By stretching this decreases the

Oracle Corporation Essay Example | Topics and Well Written Essays - 500 words

Oracle Corporation - Essay Example Furthermore, chances of improving my career and skills is high, because the company values and rewards hard work. This is through motivational policies that encourage an individual to embark on learning of new skills. Oracle Corporation mainly relies on the principles of information technology to develop softwares and hardwares. The company technological products operate under the brand name of Oracle. These softwares and hardwares are mainly referred as Oracle projects, financials, procurements, HRMS, etc. Oracle creates, markets, hosts and supports various middleware software, database, hardware systems, cloud infrastructure, and other related services all over the world. The company further provides hardware and software systems and other related services aimed at managing IT environments, and also deploying services in cloud software (Zheng and Zhang, 2014). Oracle also offers software’s for purposes of mobile computing, and middle ware as well as databases software that can help to manage business applications for small as well as large business organizations. Jones (2010) further explains that oracle provides software applications for talent management, human capital, financial management, and human relationship management. The company was founded by Larry Ellison in the year 1977, and he became the chairman of the board of directors from the year 1990, to the year 2004Another founder of the company is Bob Miner who is the architect of the oracle database. He was in charge of leading the production and design of this database from the year 1977, to the year 1992 (Jones, 2010). He later on became a member of the board of directors. Another founder is Ed Oates, and he retired from the company in the year 1996. The current chairman of the company is Jeff Henley, who took over in the year 2004, from Larry Ellison. Jeff played an instrumental