Embed Size (px)
Citation preview
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
Please discontinue use of cell phone and turn off ringer
Chapter 10
Succeeding with Technology
10.1
An Overview of Systems Development
• Systems development• Systems development life cycle• System stakeholders• Systems analyst• End-user systems development
Key Terms
Succeeding with Technology
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.
www.aim.fsu.edu
Succeeding with Technology
The SDLC
Succeeding with Technology
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.
Succeeding with Technology
Participants in Systems Dev.
Succeeding with Technology
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
Succeeding with Technology
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
Succeeding with Technology
CASE Tools
Computer-aided software engineering (CASE) tools automate many of the tasks required in a systems development effort
Succeeding with Technology
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.
Succeeding with Technology
Project Management
The overall purpose of project management is to plan, monitor, and control necessary development activities.
Gantt Chart
Succeeding with Technology
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.
Succeeding with Technology
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.
Succeeding with Technology
10.3
Systems Investigation
• Systems investigation• Feasibility analysis
Key Terms
SDLC
Succeeding with Technology
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.
Succeeding with Technology
10.4
Systems Analysis
• Systems analysis• Requirements analysis
Key Terms
SDLC
Succeeding with Technology
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.
Succeeding with Technology
10.5
Systems Design
• Systems design• Request for proposal (RFP)
Key Terms
SDLC
Succeeding with Technology
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.
Succeeding with Technology
10.6
Systems Implementation
• Systems implementation• Direct conversion• Phase-in approach• Pilot startup• User acceptance document
Key Terms
SDLC
Succeeding with Technology
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.
Succeeding with Technology
SDLC
10.7
Systems Maintenance and Review
• Systems maintenance• Systems review
Key Terms
Succeeding with Technology
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.
Succeeding with Technology
Chapter 10 Questions?
Don’t forget to turn your phone on!!
