1. Systems Development Life Cycle (SDLC)
Systems Analyst
coordination, communication, planning, design
Multistep process or cycle - some reason
Highly related and interdependent
Occur at same time
Different parts in different stages
Recycle back
Automating some of the steps
pg. 1

2. Systems Development Cycle
Systems Investigation
Product:
Feasibility Study
Understand the
Business
Problem or
Opportunity
Systems Analysis
Product:
Functional Requirements
Develop an
Information
System
Solution
Systems Design
Product:
System Specifications
Implement
the Information
System
Solution
Systems Implementation
Product:
Operational System
Systems Maintenance
Product:
Improved System
pg. 2

3. Investigation - brief study Proposals – preliminary study
Symptoms/Problem/Opportunity
Feasibility study
Cost/benefit
Tangible/intangible
pg. 3

4. Systems Investigation
Organizational
Feasibility
Technical
Economic
Operational
pg. 4

5. Systems Analysis Key Areas of Systems Analysis Organizational
Functional
Requirements
Present
System
pg. 5

6. Understand existing system, set requirements Gather and analyze data
Analysis – in-depth study – system should do to meet user needs - how system will accomplish
Understand existing system, set requirements
Gather and analyze data
Organizational
Current system
Functional requirements
Information needs
Processing capabilities required
Design - actually plan system
Satisfy functional requirements from analysis
pg. 6

7. User interface – input, output, converting to machine Tips
Prototyping process (RAD)
Limited working system, developed quickly
Data design
Databases and files
Data dictionary
Process design
Software resources – programs and procedures
Systems specifications
pg. 7

8. Prototyping Process Identify an End User's Information Requirements
Use and Maintain
the Accepted
System
Identify an End
User's Information
Requirements
Develop
Information System
Prototypes
Revise the Prototypes
to Better Meet End
User Requirements
Prototyping
Cycle
Maintenance
pg. 8

9. Education and training
Implementation
Conversion
HW and SW Acquisition
SW development
Testing
Documentation
Installation
Education and training
pg. 9

10. Converting - stress and confusion Parallel - old and new
Pilot - entire system - selected users
Phasing - part of system - all users
Plunge (cutover, direct)
Maintenance
Monitoring, evaluating, modifying
pg. 10

11. CASE – computer-aided systems engineering – software tools Uses
Business planning
Project management
User-interface
Database design
Software development
pg. 11

12. Computer-Aided Systems Engineering
Planning
Toolset
Server
Repository
Analysis
Toolset
CASE
Design
Toolset
Code
Generation
Toolset
Database
Generation
Toolset
System
Interface
Information
Integrator
Workstation
Repositories
pg. 12

13. Front end – planning, analysis, design
Back end – implementation, maintenance
Data dictionary
JAD – joint application design
End-user development
pg. 13