MELJUN CORTES SDLC

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MELJUN CORTES SDLC

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MELJUN CORTES SDLC

  1. 1. JRUTopic: System Development Life Cycle (System Analysis & Design) MELJUN CORTES 9/15/2012
  2. 2. SYSTEM DEVELOPMENT LIFE CYCLE
  3. 3. SDLC – is a technique forstructured analysis use to planand manage the developmentprocess. -describes activities and functions that system developers typically perform regardless of how those activities and function fits into particular methodology.
  4. 4. The phases and end products of the systems System Request Development life cycle - SDLC Phase 11 Phase Systems Planning Systems Planning Preliminary Preliminary Investigation Investigation Report Report Replace Phase 22 Information Phase Systems Analysis Systems Analysis SystemSTOP Stop Systems Phase 33 Project Systems Phase Requirements Development Requirements Systems Design Systems Design Document Document Systems Phase 44 Phase Systems Systems Implementation Design Systems Implementation Design Specification Phase 55 Specification Phase STOP Systems Operation and Systems Operation and Complete Support Stop Complete Support Project Functioning Functioning Development Information System Information System Operational STOP Operational Information Information Stop System System ProjectWATER FALL Model Development
  5. 5. Phase 1SYSTEMPLANNING
  6. 6. System Planning – usually begins with a formal request to the IT department, called a System Request that describes problems or desired changes in an Information System or Business Process. The purpose of the planning phase is to identify clearly the nature and scope of the business opportunity or problem by performing a Preliminary Investigation often called a Feasibility Study Business Consideration Review anticipated benefits and costs Recommend a course of action based on Economic factor Technical factor Operational factor
  7. 7. The phases and end products of the systems System Request Development life cycle - SDLC Phase 11 Phase Systems Planning Systems Planning Preliminary Preliminary Investigation Investigation Report Report Replace Phase 22 Information Phase Systems Analysis Systems Analysis SystemSTOP Stop Systems Phase 33 Project Systems Phase Requirements Development Requirements Systems Design Systems Design Document Document Systems Phase 44 Phase Systems Systems Implementation Design Systems Implementation Design Specification Phase 55 Specification Phase STOP Systems Operation and Systems Operation and Complete Support Stop Complete Support Project Functioning Functioning Development Information System Information System Operational STOP Operational Information Information Stop System System ProjectWATER FALL Model Development
  8. 8. Phase 2SYSTEMAnalysis
  9. 9. The purpose of the system analysis is to understand business requirements andbuild a LOGICAL MODEL of the new system. The first steps is Requirement Modeling, where you define and describe business Modeling processes. Requirement Modeling continues the investigation that begun during system planning and involves Fact-finding techniques such as interviews, surveys, observation and sampling. The end product for the system analysis phase is the --- SYSTEM REQUIRMENTS DOCUMENT.The system requirements document describes management and user requirements, alternative plans and costs, and your recommendation.
  10. 10. The phases and end products of the systems System Request Development life cycle - SDLC Phase 11 Phase Systems Planning Systems Planning Preliminary Preliminary Investigation Investigation Report Report Replace Phase 22 Information Phase Systems Analysis Systems Analysis SystemSTOP Stop Systems Phase 33 Project Systems Phase Requirements Development Requirements Systems Design Systems Design Document Document Systems Phase 44 Phase Systems Systems Implementation Design Systems Implementation Design Specification Phase 55 Specification Phase STOP Systems Operation and Systems Operation and Complete Support Stop Complete Support Project Functioning Functioning Development Information System Information System Operational STOP Operational Information Information Stop System System ProjectWATER FALL Model Development
  11. 11. Phase 3SYSTEMDesign
  12. 12. The purpose of System Design is to create a blueprint for the new system that willsatisfy all document requirements, whether the systems is being developed in-houseor purchased as a package. During System Design, you identify all necessary outputs, inputs, interfaces, and processes. In addition, you design internal and external controls, including computer-based and manual features to guarantee that the system will be reliable, accurate, maintainable and secure.The design is documented in the Systems Designs Specification andpresented to management and users for their review and approval.
  13. 13. The phases and end products of the systems System Request Development life cycle - SDLC Phase 11 Phase Systems Planning Systems Planning Preliminary Preliminary Investigation Investigation Report Report Replace Phase 22 Information Phase Systems Analysis Systems Analysis SystemSTOP Stop Systems Phase 33 Project Systems Phase Requirements Development Requirements Systems Design Systems Design Document Document Systems Phase 44 Phase Systems Systems Implementation Design Systems Implementation Design Specification Phase 55 Specification Phase STOP Systems Operation and Systems Operation and Complete Support Stop Complete Support Project Functioning Functioning Development Information System Information System Operational STOP Operational Information Information Stop System System ProjectWATER FALL Model Development
  14. 14. Phase 4SYSTEMImplementation
  15. 15. The objective of the Implementation Phase is to deliver a completely functioning anddocumented information system.At the conclusion of this phase, the system is ready for use. Final preparation includeconverting data to the new system’s files, training users, and performing the actual transition to the new system.The System Implementation phase also includes an assessment, called aSYSTEMS EVALUATION, to determine whether thesystem operates properly and if costs and benefits are within expectations.
  16. 16. The phases and end products of the systems System Request Development life cycle - SDLC Phase 11 Phase Systems Planning Systems Planning Preliminary Preliminary Investigation Investigation Report Report Replace Phase 22 Information Phase Systems Analysis Systems Analysis SystemSTOP Stop Systems Phase 33 Project Systems Phase Requirements Development Requirements Systems Design Systems Design Document Document Systems Phase 44 Phase Systems Systems Implementation Design Systems Implementation Design Specification Phase 55 Specification Phase STOP Systems Operation and Systems Operation and Complete Support Stop Complete Support Project Functioning Functioning Development Information System Information System Operational STOP Operational Information Information Stop System System ProjectWATER FALL Model Development
  17. 17. Phase 5SYSTEMOperation andSupport
  18. 18. Systems Operation and support is the last phase in the system development life cycle.The systems operation and support phase begins after the systems becomes operationaland continues throughout the useful life of the system. In addition to user support,this phase includes system maintenance, improvement, and performance measurement.During the performing maintenance, system analyst is like an internal consultant whoprovides guidance, support, and training. Successful, robust system often need the most support because users want to learn the features, try all the capabilities and discover how the system can help them perform their business functions.
  19. 19. AMA Computer College – Cagayan De OroTEACHINGDEMONTRATIONTopic: System Development Life Cycle (System Analysis & Design) MELJUN CORTES Applicant May 19, 2007
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