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47 lines
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47 lines
2.0 KiB
Markdown
# C4C Diagrams
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**Edit this Page** [](https://github.com/mermaid-js/mermaid/blob/develop/docs/gitgraph.md)
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> C4 Diagram: This is an experimental diagram for now. The syntax and properties can change in future releases. Proper documentation will be provided when the syntax is stable.
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Mermaid's c4 diagram sytax is compatible with plantUML. See example below:
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```mermaid-example
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C4Context
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title System Context diagram for Internet Banking System
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Person(customerA, "Banking Customer A", "A customer of the bank, with personal bank accounts.")
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Person(customerB, "Banking Customer B")
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Person_Ext(customerC, "Banking Customer C")
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System(SystemAA, "Internet Banking System", "Allows customers to view information about their bank accounts, and make payments.")
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Person(customerD, "Banking Customer D", "A customer of the bank, <br/> with personal bank accounts.")
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Enterprise_Boundary(b1, "BankBoundary") {
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SystemDb_Ext(SystemE, "Mainframe Banking System", "Stores all of the core banking information about customers, accounts, transactions, etc.")
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System_Boundary(b2, "BankBoundary2") {
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System(SystemA, "Banking System A")
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System(SystemB, "Banking System B", "A system of the bank, with personal bank accounts.")
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}
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System_Ext(SystemC, "E-mail system", "The internal Microsoft Exchange e-mail system.")
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SystemDb(SystemD, "Banking System D Database", "A system of the bank, with personal bank accounts.")
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Boundary(b3, "BankBoundary3", "boundary") {
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SystemQueue(SystemF, "Banking System F Queue", "A system of the bank, with personal bank accounts.")
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SystemQueue_Ext(SystemG, "Banking System G Queue", "A system of the bank, with personal bank accounts.")
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}
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}
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BiRel(customerA, SystemAA, "Uses")
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BiRel(SystemAA, SystemE, "Uses")
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Rel(SystemAA, SystemC, "Sends e-mails", "SMTP")
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Rel(SystemC, customerA, "Sends e-mails to")
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```
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