...TEXAS DEPARTMENT OF INFORMATION RESOURCES System Development Life Cycle Guide Version 1.1 ● 30 MAY 2008 Texas Project Delivery Framework SYSTEM DEVELOPMENT LIFE CYCLE GUIDE Version History This and other Framework Extension tools are available on Framework Web site. Release Date Description 30-May-2008 Version 1.1 released. Modified all references to “Project Plan and related plans” to “Project Plan” in order to align with Framework 2.0 and Change Request 38. 25-Sep-2007 Version 1.0 – System Development Life Cycle Guide released. DIR Document 25GU-1-1 ii Texas Project Delivery Framework SYSTEM DEVELOPMENT LIFE CYCLE GUIDE Contents Introduction ................................................................................................................................1 Use of the System Development Life Cycle Guide ....................................................................2 Section 1. System Life Cycle Processes...................................................................................3 1.1 Introduction ......................................................................................................3 1.2 System Life Cycle Processes and the Organization ........................................4 Section 2. Development Process ..............................................................................................5 2.1 Introduction ..........................................................................
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...THE SYSTEMS DEVELOPMENT LIFE CYCLE LECTURE NOTES DEVELOPING INFORMATION SYSTEMS SOLUTIONS The Systems Development Cycle: The systems approach can be applied to the solution of many types of problems. When this involves the development of information system solutions to business problems, it is called information systems development or application development. Most computer-based information systems are conceived, designed, and implemented using some form of systematic development process. In this process, end users and information specialists design information systems based on an analysis of the information requirements of an organization. Thus, a major part of this process is known as systems analysis and design. When the systems approach is applied to the development of information system solutions, a multistep process or cycle emerges. This is frequently called the information systems development cycle, also known as the systems development life cycle (SDLC). Steps involved and products produced in the traditional information systems development cycle: 1. Systems investigation - Product: Feasibility Study 2. Systems analysis - Product: Functional Requirements 3. Systems design - Product: Systems Specifications 4. Systems implementation - Product: Operational System 5. Systems maintenance - Product: Improved System 1. All the activities involved are highly related and interdependent. 2. Several developmental activities can occur at the same time...
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...CHAPTER 2 SYSTEM DEVELOPMENT LIFE CYCLE TYPES OF INFORMATION SYSTEM Transaction Processing Systems A transaction processing system provides a way to collect, process, store, display modify or cancel transactions. Most of these systems allow multiple transactions to take place simultaneously. The data that this system collects is usually stored in databases which can be used to produce reports such as billing, wages, inventory summaries, manufacturing schedules, or check registers. Management Information Systems A management information system is an information system that uses the data collected by the transaction processing system and uses this data to create reports in a way that managers can use it to make routine business decisions in response to problems. Some of the reports that this information system creates are summary, exception and ad hoc reports. All this is done to increase the efficiency of managerial activity. Decision Support Systems A decision support system helps make decisions by working and analyzing data that can generate statistical projections and data models. This system gives support rather than replacing a managers judgement while improving the quality of a managers decision. A DSS helps solve problems while using external data. Expert Systems and Neutral Networks An expert system, also known as a knowledge-based system, is a computer system that is designed to analyze data and produce recommendations, diagnosis and decisions that are controlled...
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...System Development Life Cycle (SDLC) SDLC is a set of activities which are perform by analyst and developer to create the system for software. SDLC is a conceptual model used in project management that describes the stages involved in information system development project from a preliminary study through maintenance of the complete application. SDLC follows six steps-: 1 Preliminary study 2 Determination of system requirement 3 System design 4 Software development 5 System testing 6 Implementation & Maintenance 1 Preliminary study -: Preliminary investigation is the first step in the system development life cycle. The preliminary investigation is a way of handling the user’s request to change, improve or enhance an existing system. The objective is to determine, whether the request is valid and feasible before any recommendation is made to do nothing, improve or modify the existing system, or build altogether a new one. Preliminary study divided into following 3 categories – A. Request Analysis B. Feasibility study C. Request Approval Request Analysis:- In this category, the users need is clearlyIdentify. Analyst identifies that what are the requirements of the user. Feasibility study:- The aim of the feasibility study is to access alternative systems and to propose the most feasible and desirable system for development. Thus, feasibility study provides an overview of the problem and acts as an important checkpoint that should be completed before committing more...
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...SYSTEM ANALYSIS AND DESIGN System development life cycle INTRODUCTION Systems Development: is the entire process of creating an application, gathering user requirements, designing the database, designing the modules, coding the programs, testing the product and implementing it. The historical perspective provides insights that inform today’s work. The history started with business applications created in the 1950’s, develops under the influence of legacy systems, and evolves together with technological and social factors. The significance of system changes has increased. Moreover, many specialists now need certain skills in the analysis, understanding, and evaluation of the system development and evolution processes. Systems are created to solve problems. Early systems development often took place in a rather chaotic and haphazard manner, relying entirely on the skills and experience of the individual people members performing the work. The history of systems development has a different fundamental change agent, a different factor which may be thought of as driving the history, of stimulating long-run changes. All system development efforts engage in some combination of the below tasks, System conceptualization, System requirements and benefits analysis, Project adoption and project scoping, System design, Specification of software requirements, Architectural design, Detailed design, Unit development, Software integration and testing, System integration and testing, Installation...
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...proposal document. The project is divided into four milestones, which will be submitted at various points throughout the course to scaffold learning and ensure quality final submissions. These milestones will be submitted in Module Two, Module Four, Module Six, and Module Eight. The final submission will occur in Module Nine. In this assignment, you will demonstrate your mastery of the following course outcomes: Assess the relationship of systems analysis, design, implementation, and development processes as they relate to the management of information technology systems Communicate the paradigms, processes, and activities of systems development to diverse audiences Apply structure and object oriented analysis modeling techniques to analyze, design, and manage information technology systems Construct written and visual representations of the analysis, design, implementation, and management of information technology systems based on the systems development life cycle Prompt You will select your own case study and will apply the content provided, describing the business process to complete the final project. Alternate sources for case...
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...Analysis and Design (SAD) • Overall process by which IS are designed and implemented within organizations • The process of completing an IS project is known as systems analysis and design (SAD). • Any SAD project involves four essential ingredients: – People - Methodology - Management - Tools • Two most common approaches to Systems Analysis and Design ← Object-oriented analysis and design ← Systems Development Life Cycle Systems Development Lifecycle (SDLC) [pic] [pic] Systems Investigation Stage The Investigation Phase begins the preliminary study of the proposed information system solution to meet the e-business needs. Its focus is to seek to answer the questions: What are our opportunities? What are our business priorities? How can information technologies provide information systems solutions that can be used to address theses needs? Because the process of application development can be costly both in time and resources, the system investigation phase begins with a Feasibility Study. The goal of feasibility studies is to evaluate alternative systems and to propose the most feasible and desirable systems. Feasibility is assessed across four major categories: [pic] Organizational Feasibility: This focuses on how well a proposed information system supports the objectives of the organization. – Specific features and interface requirements of the system...
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...MULTIMEDIA UNIVERSITY OF KENYA CHERUIYOT VICTOR LAGAT, BUS-242-020/2011. (4th Yr, 1st Sem). 4th August, 2014. . # BBT 2214 SYSTEMS DEVELOPMENT METHODOLOGIES Take Away CAT 2. Questons a) What are the tasks and activities involved in the development, integration and testing of information system? (10 Marks) b) What entails Implementation and Disposition Phases of the system development? (4 Marks) c) Discuss the differences between Implementation and Disposition phases based on tasks and activities. (10 Marks) d) What are the activities associated with the operations and maintenance phase of systems development. (8 Marks) e) Identify and discuss the types of maintenance. (8 Marks) f) Compare and contrast roles and responsibilities during development phase and integration and testing phases of systems development. (10 Marks) Lecturer: Nick Gachui. Date Due: August 2014. a) What are the tasks and activities involved in the development, integration and testing of information system? i. Development Code and Test Software Code each module according to established standards. Integrate Software Integrate the software units and software components and test in accordance with the integration plan. Ensure that each module satisfies the requirements of the software at the conclusion of the integration activity. Conduct...
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...Question 1 (continued) | 5 | Question 1 (continued) | 6 | Question 1 (continued) | 7 | Question 1 (continued) | 8 | Question 1 (continued) | 9 | Question 1 (continued) | 10 | Question 1 (continued) & Question 2 | 11 | Question 2 (continued) | 12 | Question 2 (continued) | 13 | References | | | Question 1 Explain the following phases of the SDLC: [50] An overview of the SDLC: a) Analysis * Systems analysis is a process of collecting factual data, understand the processes involved, identifying problems and recommending feasible suggestions for improving the system functioning. * Systems analysis involves studying the business processes, gathering operational data, understand the information flow, finding out bottlenecks and evolving solutions for overcoming the weaknesses of the system so as to achieve the organizational goals. * System Analysis also includes subdividing of complex process involving the entire system, identification of data store and manual processes. * During the analysis stage the project team determines the end-user requirements. Often this is done with the assistance of client focus groups. The project team documents all of the user requirements and gets a sign-off from the client and management to move forward with system design. * It is more of a thinking process and involves the creative skills of the System Analyst. It attempts to give birth to a new efficient system that satisfies the current...
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...in place. There is a need to follow the system development life cycle (SDLS) for it to be successful and have transformational effect on the company’s operation (Klein, S. 2007). If there is redundancy in the site of the company, some measures should be carried out to ensure that it functions well to serve the company’s information needs. There should be a back-up site available as a failover in case the main site goes down. There is also a need for the site to be redesigned to allow customers to order products online. The system development life cycle (SDLS) is involves seven phases or steps that are followed in developing an information system from conception up to disposition. The following is the seven-step phase of developing an information system by a software engineer: 1. Conceptual Planning 2. Planning and Requirements Definition 3. System design 4. Development and Testing 5. Implementation phase 6. Operations and Maintenance phase 7. Operations and Maintenance phase Conceptual Planning This is the first phase in the system development life cycle. In this phase the information system conceptual framework is constructed. This will include the evaluation and assessment of the system to be developed to determine the cost and risks associated with the system. The managers will also assess the benefits and the opportunities that will be associated with the system. In this first stage of the system development cycle, there will be also the division and designation...
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...information and real-world applications. Areas of study include fundamental concepts and technologies (what computers can do for business), the Internet, intranets, electronic commerce, information systems development, basic project management principles, decision support systems, and the benefits of computer and human synergy. Policies Faculty and students/learners will be held responsible for understanding and adhering to all policies contained within the following two documents: • University policies: You must be logged into the student website to view this document. • Instructor policies: This document is posted in the Course Materials forum. University policies are subject to change. Be sure to read the policies at the beginning of each class. Policies may be slightly different depending on the modality in which you attend class. If you have recently changed modalities, read the policies governing your current class modality. Course Materials Bagranoff, N. A., Simkin, M. G., & Strand, C. S. (2008). Core concepts of accounting information systems (10th ed.). New York, NY: John Wiley & Sons. All electronic materials are available on the student website. Week One: Changing Dynamics of Accounting Details Due Points Objectives 1.1 Identify the five accounting cycles. 1.2 Describe the impact of information systems on the accounting profession. 1.3 Demonstrate the flow of accounting information through an organization. 1.4 Analyze the...
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...modeling it as a group of interacting objects. An object is defined by its class, data elements and behavior. For example; in an order processing system, an invoice is a class, and printing, viewing and totaling are examples of its behavior. Objects (individual invoices) inherit this behavior and combine it with their own data elements.” ( (The Computer Language Company, 1981-2012) Object-oriented analysis (OOA) applies object-modeling techniques to analyze the functional requirements for a system. “Analysis is done by identifying the use cases and detailing a flow of events for each. Also, an initial set of functional test cases is specified, to serve as a vehicle for checking that the implementation is complete and basically correct. Analysis culminates in identifying classes implied by the use cases, and documenting them using an Analysis Class Diagram.” (Russell C. Bjork Professor of Computer Science, 2004) The difference is in object oriented analysis the data is combined in a process that acts on the data in the object whereas structured analysis treats the process and the data as separate components. 2- Describe the phases of the system development life cycle, and compare the SDLC waterfall model with the spiral model? “The Systems Development Life Cycle (SDLC) is a conceptual model used in project management that describes the stages involved in an information system development project from an initial feasibility study through maintenance of the completed application...
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...1.4 THE PHASES OF SYSTEM DEVELOPMENT LIFE CYCLE Before get on to the phases of the System Development Life Cycle (SDLC), come we make clear our-self on the definition of the System Development Life Cycle (SDLC). System is a wide and a common term and is an exercise of mutually beneficial or interacting elements forming an integrated whole which a term that can be utilized in different industries. Hence, System Development Life Cycle (SDLC) is a constricted term that states the of six main stages to creating hardware system only, a software element only or that mixes with other software components to create the whole system of both to meet or exceed customer’s expected values. From the below figure 1 we can understand on the basic six phases...
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...2015 CDAD2103 METHODOLOGY OF INFORMATION SYSTEM DEVELOPMENT Contents 1.1 Introduction 1 1.2 Methodology 1 1.3 Types of Software developing life cycles (SDLC) 2 1. Waterfall Model 2 2. V-Shaped Model 4 3. Evolutionary Prototyping Model 5 4. Spiral Method (SDM) 7 5. Iterative and Incremental Method 8 6. Extreme programming (Agile development) 10 1.4 CASE (computer-aided software engineering) 11 1.5 Conclusion 16 Introduction System development methodology is a standard process followed in an organization to conduct all the steps necessary to analyze, design, implement, and maintain information systems. Organizations use a standard set of steps, called system development methodology to develop and support their information systems. Like many processes, the development of information systems often follows a life cycle. For example, a commercial product such as a Nike sneaker or a Honda car follows a life cycle; it is created, tested and introduced to the market. Its sales increase, peak and decline. Finally, the product is removed from the market and is replaced with something else. Many options exist for developing information systems, but the most common methodology for system development in many organizations is system development life cycle. However, it is important to know other alternative development methodology available in order to maximize the development process. there are four important terminologies in...
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...purpose. Information Technology: Disaster Recovery Information Technology is extremely crucial in today’s business world. In fact, businesses use information technology too quickly and effectively process information, Carlson 1998. Within these businesses, employees use these advanced technologies in which to communicate. Electronic data interchange is used to transmit data. This serves a purpose of transmitting orders and payments from one company to another. With electric data interchange in mind, servers process an immense amount of data. For a business to be rendered effective, a disaster recovery plan should be develop in correlation with the priorities of the business. As noted, due to the rapid growth technology, planning strategies should be refined overtime to maintain its vigilant awareness to keep up with modern technology. Overview A disaster recovery plan is a process in which to secure intellectual property. Disaster Recovery planning involves procedures to recover, as well as, maintain accountability of a business’s information integrity in the event of a disaster. Business, no matter the size, creates large volumes of important data. Most of which is crucial to an organizations survival in its market. Disaster recovery is a documented guideline, usually in written form. These guidelines specify the procedures an organization is to follow in the event of a disaster. The disaster recovery should...
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