System Development Life Cycle Essay
1098 Words5 Pages
Computer system plays an important role in solving human problem in their daily life. There are standard steps in order to develop information system called System Development Life Cycle (SDLC). SDLC is the framework available to build a complete system. There are five phases in SDLC which are planning, analysis, design, coding, testing and maintenance (refer to Figure 1 in Appendix 1).
The first phase in SDLC is planning. In this phase, the potential system development project is identified. Project manager summarizes all strength and weakness that possible to occur using their professional skills (Hoffer, George, & Valacich, 2008). Next, business plan is defined and documented by project manager in a formal format. According to Burch…show more content…
The interview session has been done by include an open-ended and closed-ended question which are related to the implemented project. Next, sampling technique is executed by system analyst who does evaluation to the current system or prototype. These processes give feedback in evaluation form that filled after tested the system. Lastly, observation is performed by using questionnaire form. According to Burch (1992), the questionnaire is analyzed and transform into structured form that easy to understand. After all information has been collected, structuring of system requirement takes place. It focused on development process modeling which perform “graphically representing the process, or actions, that capture, manipulate, store, and distribute data between a system and environment” (Hoffer, George, & Valacich, 2012, p. 182). In this step, Data flow diagram (DFD) is structured by system analyst using special tools and techniques to create a decision table. According to Hoffer, George and Valacich (2012), decision table is a “diagram of process logic where the logic is reasonably complicated” (p. 200). This table is useful to help system analyst to make a decision toward the project. Then all information’s gained from this phase are documented in System Analysis Report (SAR) that acts as a guideline or reference to the future system development project (Burch, 1992).
The next phase in SDLC is design. According to Weitzel and Kerschberg
Systems Development Life Cycle
- Length: 916 words (2.6 double-spaced pages)
- Rating: Excellent
Systems Development Life Cycle
• Project planning: Establishes a high-level view of the intended project and determines its goals. The importance of the planning stage is to determine what technologies exist or can be developed to solve the problem that has been identified. An economic feasibility analysis is used to determine if an organization can afford the system and if the system will provide a return on the investment. An operational feasibility analysis examines the human element of the proposed system to determine how willing and able its employees are to change. A schedule feasibility analysis tries to determine if the proposed development time line is practical. This is the foundation for the traditional systems development life cycle.
• Systems analysis: Refines project goals into defined functions and operation of the intended application. Analyzes end-user information needs. This stage uses many tools and techniques including requirements gathering, structured analysis, and computer-aided systems engineering tools. Requirements gathering are used to gain a detailed understanding of a company’s problem and how the proposed system will solve it. Systems analysts review documents, interview employees and observe the business in action to gain a better understanding of the business. To aide in understanding the business, data flow diagrams are developed. These diagrams are used to show how data flows through the organization. This acquired information can be used to achieve business process reengineering as well as a road map for the programming team. Once the development team knows what the new system requires to solve the problem the systems design stage can begin.
• Systems design: The goal of this phase is to describe desired features and operations in detail including what specific functions it should have and what parts it should contain. There are two main areas of system design. A logical systems design is a document that tells the system what to do. A physical systems design is a document that describes the actual components the team will use to achieve functionality. The physical design specifies all of the actual components that will be used to implement the logical design. Once the systems development team and the client have agreed on a system’s design is frozen which means no one can make changes to it at this point. This is done to prevent scope creep and feature creep which can lead to a project going over budget and schedule. Now that the organization knows the design it can begin building it.
How to Cite this Page
| System Development Life Cycle Essay - Computer system plays an important role in solving human problem in their daily life. There are standard steps in order to develop information system called System Development Life Cycle (SDLC). SDLC is the framework available to build a complete system. There are five phases in SDLC which are planning, analysis, design, coding, testing and maintenance (refer to Figure 1 in Appendix 1). The first phase in SDLC is planning. In this phase, the potential system development project is identified. Project manager summarizes all strength and weakness that possible to occur using their professional skills (Hoffer, George, & Valacich, 2008).... [tags: Information Systems, Software]|
:: 8 Works Cited
| System Development Life Cycle Essay - Information technology has been fast growing and becoming vital issue in daily lives. It is applied in almost every field in order to make the processes easier and simpler. Lots of software available for the user to install on the computer to perform a specific task such as play game, create document and watch movie. In last few decades, only one programmer was needed in software development process to write code for solving a problem. However, the system is becoming complex today as it has involved programmers, software engineers, system analysts and users to work together to generate millions lines of codes.... [tags: information technology, planning, designing]|
:: 2 Works Cited
| Essay on System Development Life Cycle Models - ... The stages of the waterfall model are requirement gathering, analysis, program design, implementation, testing, operations and testing (OSQA, 2009). In this model, all the specifications of requirements are gathered in the beginning leading it to be inflexible during the process of development (Radhika 2013). Prototyping Model. This model is referred to as a working model due to its flexibility of the development process (OSQA, 2009). Unlike the waterfall, model which gathers all requirements in the beginning, the prototype model works with the client at every stage of development.... [tags: business processes]|
:: 4 Works Cited
|Systems Engineering Through the System Life Cycle Essay - INTRODUCTION: SYSTEMS ENGINEERING THROUGH THE SYSTEM LIFE CYCLE Modern engineered systems come into being in response to societal needs or because of new opportunities offered by advancing technology, or both. The evolution of a particular new system from the time when a need for it is recognized and a feasible technical approach is identiﬁed, through its development and introduction into operational use, is a complex effort, which will be referred to as the system development process. This chapter is devoted to describing the basic system development process and how systems engineering is applied at each step of this process.... [tags: management control, documentation]||3182 words|
|System Development Life Cycle Essay - System Development Life Cycle Introduction Achieving organizational objectives or improving on them is typically a combination of strategic planning, tactical planning and some form of change management (Starke & Sexty, 1992, p.97-99). Goals must be defined (strategic planning); courses of action adopted and implemented (tactical planning) and ultimately reinforced, introduced or replace an existing system within the work environment (change). Firms have conducted such planning in all core business units such as Marketing, Finance, Human Resources and IT in the hopes that the aforementioned strategies translate into some degree of competitive advantage.... [tags: IT Technology]||962 words|
| Essay about The System Development Lyfe Cycle Phases - The system development life cycle, also know as the SDLC, is the process of designing and developing a system or software to meet certain requirements. (“System development life,”). This cycle involves many different phases, in which the system is planned, analyzed, designed, implemented, and tested. There are five major phases in the system development life cycle: systems planning, systems analysis, systems design, systems implementation, and systems security and support. Each of these phases has a particular responsibility and certain tasks are perfumed in each phase.... [tags: SDLC, software, system security, IT]|
:: 4 Works Cited
|Essay on Knowing Macau with Butler's Life Cycle Model - Knowing Macau with Butler's Life Cycle Model The following literature is suggesting that how a tourist destination can be analyzed with the help of Butler's Tourism Life Cycle Model. Butler (1980) introduced the concept of the model which clarifies and extends earlier work by, for example, Cristaller (1963), Noronha (1976) and Stansfield (1978). In doing so, Butler clearly links the development cycle of tourism destinations to that of products in the product life cycle model. This is one the best used management framework to know the evolution in a tourism destination as described by Baum (1998), the original Butler's model included: Recognition of dynamism within the tourism environment... [tags: Tourism Industry Macau Life Cycle Model Butler]||1686 words|
|Essay about The Traditional Systems Life Cycle - The Traditional Systems Life Cycle The Systems Life Cycle methodology has six stages. It partitions the system development process into distinct stages and develops an information system sequentially, stage by stage. The six stages and a detail definition of each are as follows: Stage 1 - Project Definition Determines whether the organization has a problem and whether that problem can be solved by building a new information system. The following questions are answered: Why do we need a new system project.... [tags: Papers]||921 words|
|Essay on Using Software Development Life Cycle at GM Wilmington Assembly - Using Software Development Life Cycle at GM Wilmington Assembly Abstract 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. The project that will be examined is an upgrade to our main Human-Machine Interface (HMI) software: Cimplicity, to SQL Server and to the Windows OS.... [tags: Software Development]||1416 words|
|Systems Development and Project Management Essay - Systems Development and Project Management Information technology is an important part of a company’s future success. In order for companies to move into the future compressively they must continue to enhance their Information technology. The systems development process and the management of it are important aspects of strategically enhancing a company’s information technology system in place or better it for the future. Systems development can be simply be described as the process you go through to develop the product or products that meet your organizations needs.... [tags: Organization Management]||1101 words|
Development Life Cycle New System System Design Project Planning Systems Analysis Reengineering Detail
• Development: The programming process is usually the most difficult and time consuming. Programmers use three types of logical structures when they write programs: sequence, selection and loop. The sequence structure indicates that the computer processes programming statements in the order in which they occur. The selection structure allows execution to pass one of two alternative paths based on whether certain conditions are met. A loop structure indicates that the program should continue to execute until certain conditions exist. Now the system is built but must be tested before it is implemented.
• Testing: Brings all the pieces together into a special testing environment, then checks for errors, bugs and interoperability. Before a company can run a system, it must test the system to ensure that is works properly. Stub testing begins with the programmers. The programmer checks to confirm that the module handles incorrect data the way that it should. The development team does unit testing to ensure that the modules work correctly. The last part of testing is for the development team to test the new software a long with other components, such as the database and networks, of the new system. This part of this phase is called systems test which has two parts: verification and validation. Verification testing runs the system in a simulated environment with simulated data. Validation testing ensures that the system is working properly in the real work environment using real data. Once a team has developed and tested a system it is now ready to be implemented into the working environment.
• Implementation: The final stage of initial development, where the software is put into production and runs actual business. This can be seen as the most difficult phase because it requires employees to use an unfamiliar system. There are a number of implantation approaches. A company performs a direct cutover implantation when it quickly changes an old system to new one. This would usually take place over a weekend. The advantage to this approach is that the system becomes available immediately. In the parallel conversion approach, the new system is installed along side the old system and employees can move to the new system gradually. With pilot testing a company installs new system at only one location in the department. Once the company has passed testing in this area the system will be installed throughout then organization. With staged conversion a company implements parts of the new system at a time. Once one part is working correctly another part is added until the entire system is in place.
• Maintenance: The maintenance phase accounts for as much as 80% of the total cost of an information system. Some errors go undetected in the testing phase. It is not until employees using the system encounter problems that these problems are detected. Correcting these problems is one of the most important parts of the systems maintenance. End-user support entails responding to user questions and providing ongoing training for employees. System enhancements requests are reviewed to ensure feasibility and determine how the enhancement will impact the system.