UML Class Diagram. Design Elements
UML Class Diagram is a type of Structure Diagrams that shows the classes of a system, attributes, operations, and the relationships between them.
Class Diagram is one of important types of UML Diagrams. UML Class Diagrams are used for static modeling of the system, for data modeling, for conceptual modeling of the application, and for modeling of the system dictionary.
On the Class Diagram, Classes are represented as boxes that consist of three parts: name, attributes of the class, and operations or methods.
Use the following notations to set the visibility of a class member: Public (+), Private (-),
Protected (#), Derived (/), Static (_), Package (~). Notation must be placed before the name of class member.
There are a few types of associations between objects and classes on the Class Diagrams.
Bi-directional associations are represented by a line between two classes, it is default connection between classes.
Uni-directional associations are represented as the unbroken lines with an open arrowhead.
Aggregation is an association with the relation between the whole and its parts, and is represented as empty diamond on the Class Diagram.
Composition is a strong variant of aggregation, represents on as filled diamond.
Generalization or inheritance is when a child object or class assumes all properties of his parent object or class, is represented as empty triangle.
There are four notations: 0..1, 1, 0..*, 1..*, that indicate the multiplicity of associations.
The Rapid UML Solution for ConceptDraw DIAGRAM contains 13 vector stencils libraries with 393 interactive shapes that you can use to design your UML diagrams.
To design your own Class Diagram use the UML Class Diagram library.
UML Class Diagram library contains 39 shapes:
- Class
- Class 2
- Object 1
- Object 2
- Self association
- Interface
- Template class
- NARY
- Text Label
- Symbol { }
- Symbol << >>
- Divider (Vertical)
- Divider
- Association without ratio
- Association
- Association One-to-Many
- Association Many-to-Many
- Association One-to-One
- Inheritance
- Composition
- Aggregation
- Inheritance
- Dependency
- Connector
- Package
- Frame, fragment
- Note
- Callout
- Component
- Interface 2
- Realization
- Generalization
- UML Connector (Direct)
- UML Connector
- UML Connector (opposite)
- UML Connector (opposite direction)
- Association (without aggregation)
- Note Connector
Pic.1. UML Class Diagram Library
Pic.2. UML Class Diagram Library Elements
ConceptDraw Rapid UML solution provides UML Class Diagram library of vector stencils for drawing the class diagrams using class blocks and assembly connectors.
All libraries for creating UML diagrams are available inside the ConceptDraw DIAGRAM Templates and samples are located in the Rapid UML section of ConceptDraw STORE.
Pic.3. UML Diagrams solution
Use design element from the UML Class Diagram library to draw your own UML class diagrams of complex systems and software applications.
TEN RELATED HOW TO's:
Unified Modeling Language (UML) is a visual modeling language in the field of software engineering. It is an open standard that provides the graphic notations for creating the visual models of object-oriented software systems. UML took in the notations of the Object-modeling technique, Object-oriented software engineering and the Booch method.
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The vector stencils library Rail transport contains clipart of railway transport for ConceptDraw DIAGRAM diagramming and vector drawing software.
Use it to draw illustrations of trains and transportation of passengers and goods by railroads.
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This sample shows the Use Case Diagram of parking lot control system. On this sample you can see use cases represented as ovals and three actors represented as figures of persons that employ these use cases. Associations between actors and use cases are shown as lines.
UML Diagram of Parking - This diagram can be used for understanding the process of working the car parking, at the projection and construction the parking by building companies and for automation the existing parkings.
Picture: UML Diagram of Parking
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Vector map is the best way to visually present a world, continents, islands, to display location and boundaries of countries and cities. ConceptDraw DIAGRAM diagramming and vector drawing software offers the Germany Map Solution from the Maps Area of ConceptDraw Solution Park - the best tool for fast and easy drawing vector map of Germany of any degree of detailing, and thematic cartograms and maps of Germany on its base.
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ConceptDraw helps you to start designing your own UML Collaboration Diagrams with examples and templates.
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A flowchart is a powerful tool for examining processes. It helps improving processes a lot, as it becomes much easier to communicate between involved people, to identify potential problems and to optimize workflow. There are flowcharts of different shapes, sizes and types of flowchart vary from quite basic process flowcharts to complex program flowcharts. Nevertheless, all these diagrams use the same set of special symbols like arrows to connect blocks, parallelogram to show data receiving or rectangles for showing process steps.
Basic flowcharts are used to represent a simple process algorithm. A basic flowchart notation consists of rectangles (business processes), arrows (the flow of information, documents, etc.). The same notation is used in items such as the "decision", which allow you to do the branching. To indicate the start of the entire business process and its termination can be used the "Terminator" element. The advantages of Basic Flowchart are simplicity and clarity. With it you can quickly describe the business process steps. Creating of Basic Flowchart does not require any special knowledge, as easily understand by employees with different levels of education and IQ.
Picture: Types of Flowchart: Comprehensive Overview
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UML state machine's goal is to overcome the main limitations of traditional finite-state machines while retaining their main benefits.
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How to Draw ER Diagrams? With Entity-Relationship Diagram (ERD) solution from the Software Development Area for ConceptDraw Solution Park you are able to draw ER diagram with no problem. It includes 45 predesigned icons advocated by popular Chen's and Crow’s Foot notations that can be used when describing an enterprise database.
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A flowchart is a simple but very functional tool when it comes to understanding a workflow or to removing unnecessary stages from a process. When drawing flowcharts, keep in mind that there are four common types of flowcharts, like document flowcharts and data flowcharts that show control over a data or document flow over a system. To show controls on a physical level, use system flowcharts. In addition, to show controls in a program, you can draw a program flowchart.
This flowchart diagram represents the piece of an article editing process, that involves the author and editor. It was created using the Basic Flowchart notation that consists from the basic flowchart symbols. The start and the end of the process are indicated with "Terminator" symbols. The "Process" symbols show the action steps consisting from making edits and searching for a compromise, when the author does not agree with the suggestions of the editor. The "Process" symbol is the general symbol in process flowcharts. The "Decision" symbol indicates a branching in the process flow. There are two branches indicated by a Decision shape in the current flowchart (Yes/No, Disagree/Agree). This basic flowchart can be used as a repeating unit in the workflow diagram describing the working process of some editorial office.
Picture: Types of Flowcharts
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UML Object Diagram shows the structure of a modeled system at a specific time.
ConceptDraw Rapid UML solution delivers libraries contain pre-designed objects fit UML notation, and ready to draw professional UML Object Diagram.
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