![]() It portrays the dependency between the parent and its child, which means if one part is deleted, then the other part also gets discarded. The company encompasses a number of employees, and even if one employee resigns, the company still exists.Ĭomposition: The composition is a subset of aggregation. In this kind of relationship, the child class can exist independently of its parent class. It defines a part-whole or part-of relationship. ![]() In case if a range is not specified, one is considered as a default multiplicity.įor example, multiple patients are admitted to one hospital.Īggregation: An aggregation is a subset of association, which represents has a relationship. Multiplicity: It defines a specific range of allowable instances of attributes. It depicts how many objects are there in the relationship.įor example, a department is associated with the college. Association: It describes a static or physical connection between two or more objects.In this, the child class is inherited from the parent class.įor example, The Current Account, Saving Account, and Credit Account are the generalized form of Bank Account. Generalization: A generalization is a relationship between a parent class (superclass) and a child class (subclass).In the following example, Student_Name is dependent on the Student_Id. Dependency: A dependency is a semantic relationship between two or more classes where a change in one class cause changes in another class.In UML, relationships are of three types: It demonstrates how a class interacts with data. The methods are represented in the form of a list, where each method is written in a single line. Lower Section: The lower section contain methods or operations.A meaningful name should be assigned to the attribute, which will explain its usage inside the class.The accessibility of an attribute class is illustrated by the visibility factors.The attributes are written along with its visibility factors, which are public (+), private (-), protected (#), and package (~).The attributes have the following characteristics: ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |