systems development
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Please discontinue use of cell phone and turn off ringer. Chapter 10. Systems Development. An Overview of Systems Development Tools and Techniques for Systems Development Systems Investigation Systems Design Systems Implementation Systems Maintenance and Review. Key Terms. - PowerPoint PPT PresentationTRANSCRIPT
Succeeding with Technology
Systems Development
An Overview of Systems Development Tools and Techniques for Systems
Development Systems Investigation Systems Design Systems Implementation Systems Maintenance and Review
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Chapter 10
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10.1
An Overview of Systems Development
• Systems development• Systems development life cycle• System stakeholders• Systems analyst• End-user systems development
Key Terms
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Systems Development
Systems development is the activity of creating new or modifying existing information systems.
The systems development life cycle (SDLC) is the ongoing activities associated with the system development process including investigation, analysis, design, implementation, and maintenance and review.
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The SDLC
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programmers
Systems Analyst Systems Analyst: professional who
specializes in analyzing and designing systems.
Knowledge Workers
Stakeholders are those that stand to benefit from a new system.
Stakeholders are those that stand to benefit from a new system.
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Participants in Systems Dev.
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End-User Development
Non-tech users are becoming increasingly involved in system and software development in businesses and organizations. Why?They understand the problems at handThey are increasingly technically savvySoftware development tools are increasingly
easier to useProgrammers are not able to keep up with
organization demands
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10.2
Tools and Techniques for Systems Development
• Computer-aided software engineering (CASE) tools• Flowchart• Decision Table• Project management• Prototyping• Outsourcing• Object-oriented systems development
Key Terms
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CASE Tools
Computer-aided software engineering (CASE) tools automate many of the tasks required in a systems development effort
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Flowchart
A flowchart is a system design diagram that charts the path from a starting point to the final goal of a system.
A decision table is a systems development tool that displays the various conditions that could exist in a system and the different actions that the computer should take as a result of these conditions.
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Project Management
The overall purpose of project management is to plan, monitor, and control necessary development activities.
Gantt Chart
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Iterative Approach
With the iterative approach, each phase of the SDLC is repeated several times (iterated).
Prototyping typically involves creating a preliminary model or version of a major subsystem, or a small or scaled-down version of the entire system.
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Outsourcing and Offshoring
Outsourcing is a business’ use of an outside company to take over portions of its workload.
Offshoring relocates an entire production line to another location, typically in another country with cheaper labor, lower taxes, or other financial benefits.
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10.3
Systems Investigation
• Systems investigation• Feasibility analysis
Key Terms
SDLC
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Systems Investigation
The overall purpose of systems investigation is to determine whether or not the objectives met by the existing system are satisfying the goals of the organization.
A key part of the systems investigation phase is feasibility analysis, which investigates the problem to be solved or opportunity to be met.
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10.4
Systems Analysis
• Systems analysis• Requirements analysis
Key Terms
SDLC
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Systems Analysis
Systems analysis attempts to understand how the existing system helps solve the problem identified in systems investigation and answers the question, “What must the computer system do to solve the problem?”
The overall purpose of requirements analysis is to determine user, stakeholder, and organizational needs.
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10.5
Systems Design
• Systems design• Request for proposal (RFP)
Key Terms
SDLC
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Systems Design
The purpose of systems design is to select and plan a system that meets the requirements defined in the requirements analysis.
The request for proposal (RFP) is generated during systems development when an organization wants a computer systems vendor to submit a bid for a new or modified system.
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10.6
Systems Implementation
• Systems implementation• Direct conversion• Phase-in approach• Pilot startup• User acceptance document
Key Terms
SDLC
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Systems Implementation
Systems implementation includes hardware acquisition, software acquisition or development, user preparation, hiring and training of personnel, site and data preparation, installation, testing, startup, and user acceptance.
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SDLC
10.7
Systems Maintenance and Review
• Systems maintenance• Systems review
Key Terms
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Systems Maintenance and Review
Systems maintenance involves checking, changing, and enhancing the system to make it more useful in achieving user and organizational goals.
Systems review, the final phase of the systems development life cycle, is the process of analyzing systems to make sure that they are operating as intended.
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Chapter 10 Questions?
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