# IT:AD:UML:Examples:State Diagrams #

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* Quick Intro Video [http://bit.ly/tMbYh1](http://bit.ly/tMbYh1)


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## DDD ##
   
    note over AppService: Example of UoW
    AppService->UoW:BeginWork
    AppService->Repo1:Update
    Repo1->UoW:MarkAsUpdated
    AppService->Repo2:Add
    AppService->Repo2:MarkAsAdd
    AppService->UoW:Commit
    UoW->Db:Persist


UI->App:CreateInvoice()
App->App:CreateUoW()
App->Domain:
Domain->App:
Domain->Repo:
UI->App:SaveInvoice()