16-09-2021

Notation DescriptionUML Notation

Activity

Is used to represent a set of actions

Action

A task to be performed

Control Flow

Shows the sequence of execution

Object Flow

Show the flow of an object from one activity (or action) to another activity (or action).

Initial Node

Portrays the beginning of a set of actions or activities

Activity Final Node

Stop all control flows and object flows in an activity (or action)

Object Node

Represent an object that is connected to a set of Object Flows

Decision Node

Represent a test condition to ensure that the control flow or object flow only goes down one path

Merge Node

Bring back together different decision paths that were created using a decision-node.

Fork Node

Split behavior into a set of parallel or concurrent flows of activities (or actions)

Join Node

Bring back together a set of parallel or concurrent flows of activities (or actions).

Swimlane and Partition

A way to group activities performed by the same actor on an activity diagram or to group activities in a single thread

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Activity diagrams are not exactly flowcharts as they have some additional capabilities. These additional capabilities include branching, parallel flow, swimlane, etc. Before drawing an activity diagram, we must have a clear understanding about the elements used in activity diagram. The main element of an activity diagram is the activity itself. Copy of New Appointment system for doctor office-You can edit this template and create your own diagram. Creately diagrams can be exported and added to Word, PPT (powerpoint), Excel, Visio or any other document. Use PDF export for high quality prints and SVG export for large sharp images or embed your diagrams anywhere with the Creately viewer. Arrow diagrams are used in the planning stage of project management to schedule activities, which are represented by arrows, to better meet deadlines and use the right resources at the right time. The tail of the arrow is the beginning of an activity, while the pointed end is representative of the endpoint of the activity.

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ActivityMedicine

Activity diagram is another important diagram in UML to describe the dynamic aspects of the system.

Activity diagram is basically a flowchart to represent the flow from one activity to anotheractivity. The activity can be described as an operation of the system.

The control flow is drawn from one operation to another. This flow can be sequential, branched, or concurrent. Activity diagrams deal with all type of flow control by using different elements such as fork, join, etc

Purpose of Activity Diagrams

The basic purposes of activity diagrams is similar to other four diagrams. It captures the dynamic behavior of the system. Other four diagrams are used to show the message flow from one object to another but activity diagram is used to show message flow from one activity to another.

Activity diagram doctor of medicine

Activity is a particular operation of the system. Activity diagrams are not only used for visualizing the dynamic nature of a system, but they are also used to construct the executable system by using forward and reverse engineering techniques. The only missingthing in the activity diagram is the message part.

Activity Diagram Of Doctor Appointment

It does not show any message flow from one activity to another. Activity diagram is sometimes considered as the flowchart. Although the diagrams look like a flowchart, they are not. It shows different flows such as parallel, branched, concurrent, and single.

The purpose of an activity diagram can be described as −

  • Draw the activity flow of a system.

  • Describe the sequence from one activity to another.

  • Describe the parallel, branched and concurrent flow of the system.

How to Draw an Activity Diagram?

Activity diagrams are mainly used as a flowchart that consists of activities performed by the system. Activity diagrams are not exactly flowcharts as they have some additional capabilities. These additional capabilities include branching, parallel flow, swimlane, etc.

Before drawing an activity diagram, we must have a clear understanding about the elements used in activity diagram. The main element of an activity diagram is the activity itself. An activity is a function performed by the system. After identifying the activities, we need to understand how they are associated with constraints and conditions.

Before drawing an activity diagram, we should identify the following elements −

  • Activities

  • Association

  • Conditions

  • Constraints

Once the above-mentioned parameters are identified, we need to make a mental layout of the entire flow. This mental layout is then transformed into an activity diagram.

Following is an example of an activity diagram for order management system. In the diagram, four activities are identified which are associated with conditions. One important point should be clearly understood that an activity diagram cannot be exactly matched with the code. The activity diagram is made to understand the flow of activities and is mainly used by the business users

Activity Diagram Doctor Who

Following diagram is drawn with the four main activities −

  • Send order by the customer

  • Receipt of the order

  • Confirm the order

  • Dispatch the order

After receiving the order request, condition checks are performed to check if it is normal or special order. After the type of order is identified, dispatch activity is performed and that is marked as the termination of the process.

Activity Diagram Online

Where to Use Activity Diagrams?

Doctor Activity Diagram

The basic usage of activity diagram is similar to other four UML diagrams. The specific usage is to model the control flow from one activity to another. This control flow does not include messages.

Activity diagram is suitable for modeling the activity flow of the system. An application canhave multiple systems. Activity diagram also captures these systems and describes the flow from one system to another. This specific usage is not available in other diagrams. These systems can be database, external queues, or any other system.

We will now look into the practical applications of the activity diagram. From the above discussion, it is clear that an activity diagram is drawn from a very high level. So it gives high level view of a system. This high level view is mainly for business users or any other person who is not a technical person.

Activity Diagram Doctor Salary

This diagram is used to model the activities which are nothing but business requirements. The diagram has more impact on business understanding rather than on implementation details.

Activity diagram can be used for −

  • Modeling work flow by using activities.

  • Modeling business requirements.

  • High level understanding of the system's functionalities.

  • Investigating business requirements at a later stage.

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