UML Use Case Diagram Example. Registration System
The use case diagram (behavior scenarios, precedents) is the initial conceptual representation of the system during its design and development. This diagram consists of actors, use cases and relationships between them. When constructing a diagram, common notation elements can also be used: notes and extension mechanisms.
The essence of this diagram is as follows: the designed system is represented as a set of actors interacting with the system using the so-called “use cases”. In this case, an actor (acting person, actant, artist) is any object, subject, or system that interacts with a simulated system from the outside. In turn, the “use case” is a specification of the services (functions) that the system provides to the actor. In other words, each “use case” defines a certain set of actions performed by the system when interacting with an actor. At the same time, the model does not reflect in any way how this set of actions will be implemented.
In the structural approach, the analogue of the use case diagram is IDEF0 and DFD diagrams, use-work options (IDEF0) and processes (DFD), and actors — external entities (DFD).
This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the UML Use Case Diagram library of the Rapid UML Solution from the Software Development area of ConceptDraw Solution Park.
This sample shows the types of user’s interactions with the system and is used at the registration and working with the database system.
Example 1. Registration System. UML Use Case Diagram
Using the libraries of the Rapid UML Solution for ConceptDraw DIAGRAM you can create your own visual vector UML diagrams quick and easy.
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Activity Network Diagram - This sample was created in ConceptDraw DIAGRAM diagramming and vector drawing software using the Seven Management and Planning Tools solution from the Management area of ConceptDraw Solution Park.
This sample shows the PERT (Program Evaluation Review Technique) chart of the request on proposal. A request for proposal (RFP) is a request of the company or the organization to potential suppliers to submit the business proposals for service or goods that it is interested to purchase. The RFP is represented on the initial procurement stage and allows to define the risks and benefits.
Picture: Activity Network Diagram Method
Business Process Flow Diagram is a graphical presentation of business processes and process flows. It is one of the main tool of business analysis and business process re-engineering that lets identify and easy understand process flows within organization.
ConceptDraw DIAGRAM extended with Business Process Workflow Diagrams solution from the Business Processes area of ConceptDraw Solution Park is a powerful software which lets easy design Business Process Flow Diagram of any complexity.
Picture: Business Process Flow Diagram
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Picture: Network Topologies
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Picture: Data Modeling Tools
Developing a software project supposes architecture first. To make it proper, you can use data flow diagram model in your current project.
The data flow diagram represents the Model of small traditional production enterprise that is made using Yourdon and Coad notation. It shows how the data is transfered through a process. According to the notation of Yourdon and Coad a process is represented by circles and data stores are drawn using parallel lines. This DFD was created using the ConceptDraw Data Flow Diagrams solution. Using this solution one can visualize data flow accordingly to the rules of two basic notations used for data flow modeling.
Picture: Data Flow Diagram Model
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