The only difference is that an object name is always underlined in UML. The class and object have the same notations. Any UML class diagram notations are generally expressed as below UML class diagrams example, UML Class SymbolĪn object is an entity which is used to describe the behavior and functions of a system. A class whose functionalities are not defined is called an abstract class. In UML, we can also represent an abstract class. It is used to define the properties and operations of an object. Let us explain the Structural Things used in UML:Ī class is used to represent various objects. It is the noun of a UML model, such as a class, object, interface, collaboration, use case, component, and a node. Structural things in UML are all about the physical part of a system. It is used to represent the things that are visible to human eyes. Things are divided into various categories in UML as follows,Ī structural thing is used to describe the static part of a model. ThingsĪ thing can be described as any real-world entity or an object. Let us study in depth the building blocks and UML diagram symbols. Following are the basic building blocks of UML: It is an essential part of every UML diagram.
#Staruml multiplicity full
Building blocks are the things required to develop one full UML model diagram. UML stands for unified modeling language which revolves around various blocks to generate a single model. A model means organizing something with a particular purpose. As modeling omits unimportant details, it is easier to manipulate than the original entity.
#Staruml multiplicity code
* or*-In the relationship of view elements, connecting lines represent 0 to more than one Ģ: 0.1 -In the relationship of view elements, the connecting lines represent 0 to 1 ģ: 1- In the relationship of view elements, the connecting line represents one Īddress algorithm array assembly attribute Browser c Catalog Character string Client code command configuration file container data Database Definition Edition element Example file function java javascript Journal link linux Memory method Modular mysql node object page parameter php Plug-in unit project python Route source code The server Thread time user Recent Posts The implementation operations of other requirements are basically the same, only connecting lines represent differences, and the figure below is the overall diagram after the implementation of the modelġ: 0. Implementation class BMW-As above, drag the view element class and add the connection line generation
The combination relationship line can set the relationship between two ends Realization tire and engine-For the same operation, drag two view elements class and add the connection line composition. The style of view element lines can be adjusted in online properties Realization of automobile and bicycle-As above, drag two view elements class, add connection line interface, point to vehicle interface, and represent the implementation of interface
Interface car –-Drag an interface to view element, name attribute to car, view element to add attribute method, and description to car Now we want to implement a class diagram design, the requirements are as followsġ: Interface – car 2: implementation class – car, bicycle 3: tire, engine class constitute car 4: BMW is a kind of car 5: students need to ride bicycle 6: each student has ID card 7: each student has class ĭesign a class diagram according to the requirements. Method 1 has a string parameter, and method 2 has a string parameter and needs to return a string result Basically, a class diagram represents a static view of the system.ġ: Create a new project, or create according to the template (you can create a new project at the beginning),Ģ: In the model Explorer on the right, right-click the top node or model node, and select add class Diagramģ: Working on the left Diagrams Click to activate the canvas to be modeled (there are usually multiple canvases in a project Diagram, it needs to be determined which model is in the process of design）Ĥ: Select class in toolbox, double-click or drag the drawing view element in drawing areaĥ: As shown in the figure below, a view element of class is drawn, and a string attribute of type is added. It describes the relationship between objects and them in a system, which enables us to have a comprehensive understanding of the system before writing code correctly.Ī separate class diagram describes a specific aspect of the system, and the collection class diagram represents the whole system. The detailed explanation of class diagram can be found on the Internet (recommended ) Class diagram relationships: generalization (inheritance), implementation, aggregation, composition, association, dependency
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