Introduction to Relationship
Relationship provide a pathway for communication between objects. There are mainly five types of relationship in UML: that exist among classes. They are as follows:
Before going in detail of these relations let us see some important terms related to them:
1. Multiplicity: It is defined as the number of objects of a class that participates in a relation. Or in more easy words multiplicity is the number of instances of one class related to one instance of the other class.
2. Navigation: It shows direction of a relation . it will be more clear in the examples that are presented later.
Association is a bidirectional structural relationship that describes connection among the classes. If the association is between two classes then it is called binary association. It is represented by a solid line. There can be association even among more than two classes, but it is very rare. Even an association can circle back to the same class.
2. Aggregation / Composition
Aggregation is another type of structural relationship, that connects two classes but in a stronger way. It is in fact a type of association where one of the class participating in a relation, participates as a whole while the other participates as a part. In simpler words it is the structural inclusion of one class by another.
3. Dependecy
A dependency relationship is a weaker form of relationship than the above discussed ones. A dependency states that a change in specification of one class my effect another class that uses the first one but not vice versa. Most often dependencies are used in context of classes to shown that one class used another class as an argument in signature of an operation. It is shown in fig 8.7,
4. Generalization /specialization
It comes from the property of inheritance of OOPS generalization is nothing but deriving a class out of a parent class having some inherited property ( form the parent class) and some new property of the derived class. The term generalization is for the inheritance in the bottom to up direction. i. e. ,from parent class to the derived class while another relation is specialization which is in direction form the parent class to the derived class. Both concepts are shown in fig 8.8
5. Realization
Realization is very similar to inheritance or specialization the only difference between them is that here a class is derived from an interface instead of a base class. an interface is a class or rather an abstract class where the operations are declared and not defined or implemented. The derived class implements the operation declared by the interface and thus the relation between an interface and the class that implements the interface is called realization.
Latest technology based Software Engineering Online Tutoring Assistance
Tutors, at the www.tutorsglobe.com, take pledge to provide full satisfaction and assurance in Relationship homework help via online tutoring. Students are getting 100% satisfaction by online tutors across the globe. Here you can get homework help for Relationship, project ideas and tutorials. We provide email based Relationship homework help. You can join us to ask queries 24x7 with live, experienced and qualified online tutors specialized in Relationship. Through Online Tutoring, you would be able to complete your homework or assignments at your home. Tutors at the TutorsGlobe are committed to provide the best quality online tutoring assistance for Software Engineering homework help and assignment help services. They use their experience, as they have solved thousands of the software engineering assignments, which may help you to solve your complex issues of Relationship. TutorsGlobe assure for the best quality compliance to your homework. Compromise with quality is not in our dictionary. If we feel that we are not able to provide the homework help as per the deadline or given instruction by the student, we refund the money of the student without any delay.
tutorsglobe.com passive transport assignment help-homework help by online membrane transport tutors
Homework helper Tutors offer Physics assignment help, homework help, assignment writing services, physics tutoring, writing assignments and homework writing.
tutorsglobe.com geitonogamy assignment help-homework help by online self pollination tutors
tutorsglobe.com plant physiology assignment help-homework help by online botany tutors
tutorsglobe.com super conductors assignment help-homework help by online solid state chemistry tutors
Rigid Body Dynamics II tutorial all along with the key concepts of Torque, Angular Momentum, Conservation of Angular Momentum and Its Applications, Top and Gyroscope
tutorsglobe.com parasitic plants assignment help-homework help by online mode of nutrition tutors
Local Oscillator should generate an oscillator frequency that should be equivalent to the sum of RF and IF (Fo = Fs + IF). It is known as tracking.
gas law-i tutorial all along with the key concepts of kinetic molecular theory of gases, boyle's law, charles' law, kinetic theory explains boyle's law, kinetic theory explains charles' law and general gas equation
Avail top-rated Evolution Assignment Help service from qualified tutors – Get A++ grade papers, 24x7 support, on-time delivery at fair prices!
tutorsglobe.com memory assignment help-homework help by online co-ordination systems tutors
Cellular Response tutorial all along with the key concepts of Properties of Innate Immune Response, Properties of Adaptive Immune Response, Kinds of Adaptive Immune Response, Active and Passive Immunity, Genetics of response to antigenic stimulation, Clonal Selection Theory
Reproduction in fungi tutorial all along with the key concepts of Asexual Reproduction in Fungi, kinds of asexual spores in fungi, Sexual reproduction in Fungi, Forms of asexual spores, Sexual spores
www.tutorsglobe.com offers system fundamentals homework help, system fundamentals assignment help, case study, writing homework help, online tutoring assistance by computer science tutors.
tutorsglobe.com difference between finance and financing assignment help-homework help by online source of finance tutors
1940317
Questions Asked
3689
Tutors
1443798
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!