1. Systems Development An Overview of Systems Development
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
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2. 10.1 An Overview of Systems Development
Systems development life cycle
System stakeholders
Systems analyst
End-user systems development
Key Terms

3. 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.

4. The SDLC

5. Systems Analyst
Systems Analyst: professional who specializes in analyzing and designing systems.
Stakeholders are those that stand to benefit from a new system.
Knowledge Workers
programmers

6. Participants in Systems Dev.

7. 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 hand
They are increasingly technically savvy
Software development tools are increasingly easier to use
Programmers are not able to keep up with organization demands

8. 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

9. CASE Tools
Computer-aided software engineering (CASE) tools automate many of the tasks required in a systems development effort

10. 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.

11. Project Management
Gantt Chart
The overall purpose of project management is to plan, monitor, and control necessary development activities.

12. 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.

13. 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.

14. 10.3 Systems Investigation
SDLC
10.3 Systems Investigation
Systems investigation
Feasibility analysis
Key Terms

15. 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.

16. 10.4 Systems Analysis SDLC Key Terms Systems analysis
Requirements analysis
Key Terms

17. 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.

18. 10.5 Systems Design SDLC Key Terms Systems design
Request for proposal (RFP)
Key Terms

19. 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.

20. 10.6 Systems Implementation
SDLC
10.6 Systems Implementation
Systems implementation
Direct conversion
Phase-in approach
Pilot startup
User acceptance document
Key Terms

21. 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.

22. 10.7 Systems Maintenance and Review
SDLC
10.7 Systems Maintenance and Review
Systems maintenance
Systems review
Key Terms

23. 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.

24. Chapter 10 Questions?
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