1. (System Development Life Cycle)
Building the MIS
System Concepts
(System Development Life Cycle)

2. A System
Consists of elements which operate together according to some procedures and within some boundaries to achieve a particular goal.
The basic model is input, process and output.

3. The Organization as a System:
Control
Plans
Programs
Policies
Strategies
External Control
The Organization as a System:
Input
Manager
Money
Materials
Machines
+ Information
Organization
Output
Goals/Objectives
Profitability
Productivity
Growth
Innovation
Employee
Development
The Computer MIS
Measure performance against plan

4. Three stages of systems approach
Definition
Understand the business problem or opportunity.
Development
Develop an information system solution.
Installation and operation
Implement the information system solution.

5. Definition Feasibility Study Requirements Collection and Analysis
Conceptual Design

6. Development Design Physical system design Physical database design
Input design
Output design
Physical database design
File design
Database design
Program Development
Procedure Development

7. Installation and Operation
Conversion
Operation and Maintenance
Post audit

8. in its Development Cycle
Journey of a “System”
in its Development Cycle

9. System Development life Cycle (SDLC)
It holds that systems are best developed through the use of a systematic development approach.
The systems development life cycle (SDLC) is a conceptual model used in project management.
It describes the stages involved in an information system development project, from an initial feasibility study through maintenance of the completed application.

10. Steps in SDLC

11. System Investigation Following are the three activities in this stage:
System planning and selection
Feasibility study
Feasibility report
There are four types of feasibilities:
Organizational
Economic
Technical
Operational

12. System Analysis Following are the four activities in this stage:
Analysis of the organizational environment
Analysis of any present systems
System requirement analysis
System requirements report

13. System Design System design can be viewed as the design of
User interface design (Screen, form, reports and dialog design)
Data design (Data element structure design)
Process design (Program and procedure design)

14. System Implementation
It involves
Hardware and software acquisitions
Software development
Testing of programs and procedures
User training
Development of documentation
Various installation activities

15. System Maintenance It involves
Monitoring
Evaluating
Modifying of a system to make desirable or necessary improvements
It also includes post-implementation review process for any new requirement.

16. Final SDLC Maintenance Cycle Testing Cycle Systems Investigations
Analysis
Systems
Design
Systems
Implementations
Systems
Maintenance
Product:
Feasibility
Study
Product:
System
Requirements
Product:
System
Specifications
Product:
Operational
System
Product:
Improved
System