The Diagram Shows , , and . Which Statement Can Be Proven True From the Diagram?
Activity Diagram
What is an Activity Diagram?
An activeness diagram visually presents a series of actions or period of command in a system similar to a flowchart or a data flow diagram. Activity diagrams are often used in business concern process modeling. They tin can as well describe the steps in a utilize instance diagram. Activities modeled can be sequential and concurrent. In both cases an activity diagram volition have a offset (an initial state) and an end (a final state).
In between there are ways to depict activities, flows, decisions, guards, merge and fourth dimension events and more. Learn about activity diagram symbols below:
Basic Activity Diagram Notations and Symbols
Initial Country or Start Signal
A small filled circumvolve followed by an arrow represents the initial action land or the start signal for any activity diagram. For activeness diagram using swimlanes, make sure the kickoff signal is placed in the top left corner of the first column.
Activity or Activity State
An action state represents the non-interruptible action of objects. You lot can depict an activity state in SmartDraw using a rectangle with rounded corners.
Action Flow
Activeness flows, also called edges and paths, illustrate the transitions from one activeness state to some other. They are unremarkably drawn with an arrowed line.
Object Flow
Object flow refers to the creation and modification of objects by activities. An object period arrow from an action to an object means that the action creates or influences the object. An object flow arrow from an object to an activity indicates that the action state uses the object.
Decisions and Branching
A diamond represents a conclusion with alternating paths. When an activeness requires a decision prior to moving on to the side by side activity, add a diamond between the two activities. The outgoing alternates should be labeled with a condition or guard expression. You tin also label one of the paths "else."
Guards
In UML, guards are a statement written next to a conclusion diamond that must exist truthful before moving next to the next activeness. These are not essential, but are useful when a specific answer, such as "Yes, three labels are printed," is needed before moving forward.
Synchronization
A fork node is used to split a single incoming menstruum into multiple concurrent flows. It is represented as a straight, slightly thicker line in an activity diagram.
A join node joins multiple concurrent flows back into a unmarried outgoing flow.
A fork and join way used together are oft referred to as synchronization.
Time Event
This refers to an upshot that stops the period for a time; an hourglass depicts it.
Merge Event
A merge effect brings together multiple flows that are not concurrent.
Sent and Received Signals
Signals represent how activities can be modified from outside the system. They ordinarily appear in pairs of sent and received signals, considering the state can't modify until a response is received, much like synchronous letters in a sequence diagram. For case, an authorization of payment is needed earlier an social club tin be completed.
Interrupting Edge
An event, such as a counterfoil, that interrupts the flow denoted with a lightning bolt.
Swimlanes
Swimlanes group related activities into one column.
Final State or Finish Point
An arrow pointing to a filled circle nested inside some other circle represents the terminal action state.
Activity Diagram Tutorial
You can brand an activity diagram past connecting and joining diverse activity states. The starting point is usually marked with a dark, filled-in circle with an arrow pointing to the next state usually a rectangle with rounded corners. All action flows are represented with arrows indicating the transitions from state to land.
SmartDraw makes drawing activeness diagrams easy with built-in action diagram templates that already have all the basic symbols docked and the tools to connect everything at your fingertips.
Source: https://www.smartdraw.com/activity-diagram/
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