A context diagram shows the system boundaries and major information flows between external entities and the system. It indicates people, organizations, and systems that communicate with the system, and depicts the data received from and sent to the outside world. A context diagram is also known as a level 0 data flow diagram, showing the system's major processes, data flows, and data stores at a high level of abstraction. Examples of context diagrams are presented.

1. CONTEXT DIAGRAM
Software analysis and design tools

2. Presented to
Mam Asma Jameel
Presented by
saman Iftikhar
hira nasir
shahwana fida
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3. Outline
Software analysis and design tools
What is context diagrams?
Examples
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4. Software analysis and design tool
 Software analysis and design is the intermediate stage,
which helps human-readable requirements to be
transformed into actual code.
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5. What is Context Diagram?
 Context diagram shows the system boundaries, external entities that
interact with the system, and major information flows between entities
and the system.
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6. Cont.
 Indicate the people, organization and systems which communicate with our system.
 Show the data which our system receives from the outside world.
 Show the data produced by the system and sent to the outside world.
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7. Cont.
 Show the data which is shared by the system with the outside world.
 Show the boundary between the system and the rest of the world.
 It is also called level 0 DFD.
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8. Cont.
 Level-0 DFD shows the system’s major processes, data flows, and data
stores at a high level of abstraction.
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9. Symbols used In context diagram
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process
Entity
Data flow

10. Example 1
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11. Example 2
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12. Example 3
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13. Example 4
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14. 2/5/2018 Software enginering 14
Thank you