Explain the types of Workflow in Windows Workflow Foundation.There are 3 types of workflows in WWF:
Sequential Workflow: The sequential workflow style executes a set of contained activities in order, one by one and does not provide an option to go back to any step.
State Machine Workflow: It represents the workflow in the form of a state machine containing set of states, each of them receiving events. These events lead to transition from one state to another one.
Rules-driven Workflow: It is based on Sequential/StateMachine workflow.
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