Systems Development
6
Systems Development Life Cycle (SDLC) Investigate / Plan Systems Analysis Systems Design Systems Implementati on Systems Maintenance Note: feedback loops are added to allow the return to prior stages SDLC is a conceptual model or framework, it describes the phases of systems development, and is used in project management
-
Upload
jaskahlon92 -
Category
Documents
-
view
212 -
download
0
Transcript of Systems Development
Systems Development Life Cycle (SDLC)
Investigate / Plan
Systems Analysis
Systems Design
Systems Implementation
Systems Maintenance
Note: feedback loops are added to allow the return to prior stages
SDLC is a conceptual model or framework, it describes the phases of systems development, and is used in project management
Investigation / Planning
What’s the business problem/opportunity? Feasibility Study
Operational Technical Economic (cost/benefit analysis)
Consider tangible/intangible costs and benefits
Systems Analysis
Specify “what” the system should do Analyze current system / business processes Functional requirements
Input – Process - Output
Systems Design
Specifies “how” we are going to do what needs to be done
User Interface Layouts of screens, forms, reports, etc…
Data Design Tables, elements, database structure
Process Design Design of programs and procedures
System specifications
Implementation Purchase hardware, software, and services
Request for Quotation (RFQ) / Request for Proposal (RFP)
Programming / Software Installations Testing Data Conversion Documentation Training Methods of Converting to New System
Parallel / Phased / Pilot / Direct Cutover
Systems Development Life Cycle (SDLC)
Investigate / Plan
Systems Analysis
Systems Design
Systems Implementation
Systems Maintenance
Front End
Back End
AnalysisWhat do we need to do?
DesignHow are we going to do what needs to be done?
ImplementDo it.
