1. Public Management Information Systems System Analysis & Design Tuesday, December 04, 2018
Hun Myoung Park, Ph.D.
Public Management & Policy Analysis Program Graduate School of International Relations

2. System Development Life Cycle
Investigation (planning)
Systems analysis
Systems design
System development
Systems implementation
System maintenance

3. Data Flow Diagram 1
A picture of the movement of data between external entities and the processes and data stores within a system
Data flow (arrow)
Process (work or actions)
Data store in rectangular
Source/sink

4. Data Flow Diagram 2 Context diagram or level-0 diagram
Overview of an organizational system that shows the system boundaries, external entities that interact with the system, and the major information flows between the entities and the system
Level-n diagram is a data flow diagram that is n nested decompositions from a process on a level-0

5. Data Flow Diagram 3 Data flow allows only one direction
Data flow from and to data store means retrieving and updating information
Process (verb) has to have input and output
Data store must be moved by a process
Source/sink

6. Context DFD

8. Level 1 DFD

9. Context DFD

10. Level 0 DFD

11. Flowchart

12. System Design 1 Logical and functional designs
Defines input/output requirements (forms and reports)
Design user interfaces and dialogues
Design database/storage (data dictionary)
Specifies H/W, S/W, and networking (telecommunication)
PERT (Program Evaluation Review Technique)

13. System Design 2
System controls (I/O, process, database, telecommunication personnel control)
Rules and procedure (security, privacy, data integrity, and backups--recovery).
Described in request for proposal (RFP) specifying required resources (H/W, S/W)
PERT (Program Evaluation Review Technique)

16. Highlights
Emphasis on reliability, security, privacy especially for contracting out projects
Importance of documentation in all stages.