🎓 Student Projects (College Reports) · Data Flow
Online Examination System Data Flow Diagram (Level 1)
Data flows in an online exam system from question setting to published results.
Drawing diagram…
What this diagram shows
- Examiner, student and admin as external entities
- Grading split into auto and manual review
- Five data stores
Prompt used
Level 1 data flow diagram for an online examination system: the examiner sends questions and the exam schedule; students log in, receive the paper and send answers; processes are manage question bank, authenticate user, conduct exam, grade answers and publish results; data stores are users, question bank, exams, answers and results; results go to students.
Mermaid code
flowchart LR
subgraph EXT ["🌐 External Entities"]
ST["Student"]
EX["Examiner"]
end
subgraph PROC ["⚙️ Core Processes"]
P1["1.0 Manage question bank"]
P2["2.0 Authenticate user"]
P3["3.0 Conduct exam"]
P4["4.0 Grade answers"]
P5["5.0 Publish results"]
end
subgraph STORE ["🗄️ Data Stores"]
D1[("D1 Users")]
D2[("D2 Question bank")]
D3[("D3 Answers")]
D4[("D4 Results")]
end
EX -->|"1. Questions and schedule"| P1
P1 -->|"2. Questions"| D2
ST -->|"3. Login details"| P2
D1 -->|"4. Credentials"| P2
P2 -->|"5. Session"| P3
D2 -->|"6. Exam paper"| P3
P3 -->|"7. Questions"| ST
ST -->|"8. Answers"| P3
P3 -->|"9. Submitted answers"| D3
D3 -->|"10. Answers to grade"| P4
EX -->|"11. Marks for descriptive answers"| P4
P4 -->|"12. Scores"| D4
D4 -->|"13. Scores"| P5
P5 -->|"14. Result card"| STRelated templates
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