As systems have become increasingly more complex, the need for communicating software systems has become a challenge. In response to that need, the Unified Modeling Language “UML” was developed and serves as a graphical language to describe those complex systems. UML is presently an industry standard representing a software system’s structure, interactions and behaviors in terms of graphical diagrams. UML has many types of diagrams each representing a different view of the system. In object-oriented programming, classes are used to separate and encapsulate business objects and behaviors. The UML class diagram presents a ‘static’ view of those classes and their relationships. The class diagram is drawn as a rectangle and contains the class name, with optional compartments to separate class attributes and methods (Sparx Systems, 2007 p.8). Each attribute and methods visibility is referenced with a marker to symbolize public, private or protected. Connecting lines and arrows illustrate the relationship between those classes. There are several types of relationships that can be depicted in class diagrams. In object-oriented systems, the concept of inheritance refers to sub-classes who might have access to shared characteristics of a base class. The class diagram defines this inheritance relationship type as generalization. To illustrate this relationship, a single line connects the class with an arrow pointing toward the base class. Another common relationship type is known as ‘multiplicity’. For example, a student enrollment system that contains a “College” class would have a relationship with a “Student” class. Since a college can contain a collection of students, a line connecting the two classes will establ... ... middle of paper ... ...boration-Diagrams SmartDraw (2011). What is a UML Activity Diagram? In Tutorials retrieved from http://www.smartdraw.com/resources/tutorials/#/resources/tutorials/UML-Activity-Diagram SmartDraw (2011). What is a UML Component Diagram? In Tutorials retrieved from http://www.smartdraw.com/resources/tutorials/#/resources/tutorials/UML-Component-Diagram SmartDraw (2011). What is a UML Deployment Diagram? In Tutorials retrieved from http://www.smartdraw.com/resources/tutorials/uml-diagrams/#/resources/tutorials/UML-Deployment-Diagrams Sparx Systems (2007). Using UML – Structural Modeling Diagrams. Retrieved from http://www.sparxsystems.com.au/downloads/whitepapers/UML_Tutorial_Part_1_Introduction.pdf Sparx Systems (2010). UML 2 Composite Structure Diagram. Retrieved from http://www.sparxsystems.com/resources/uml2_tutorial/uml2_compositediagram.html
It is really interesting to break down the separate classes and find their similar details and their different details. Obviously the differences are greater in number and some of them fairly extreme. But that is to be expected.
Information and Software Technology Years 7–10: Syllabus. (2003, June). Retrieved April 10, 2014, from http://www.boardofstudies.nsw.edu.au/syllabus_sc/pdf_doc/info_soft_tech_710_syl.pdf
Johnson, R. and Foote, B. (1988) “Designing reusable classes”. In: Journal Of Object-Oriented Programming, v.1, n. 2, p. 22-35, Jun./Jul.
Jackson, F., and Pettit, P., 1990, 'Program Explanation: a general perspective', Analysis, vol. 50, pp. 107-117.
ignores the fact that two entities can have multiple relations between them. This can result in poor
Quoting the dictionary, parametric relationship is “The relationship between objects that are interdependent for dimensions or shapes.” It allows the user to assemble the dimensions in such way that the change in one of them will start a flurry of changes in the associated dimensions. In practice, parametric relationship can be used to construe simple dimensions, or they can be used with more sophisticated equations like volume, mass, or centre of gravity. The creation of parametric relationships between design entities can save a colossal amount of time and effort when dimension changes are necessary. Opportunities to generate these relationships occur at every stage of modelling, from the elementary parts to the most developed assemblies.
The first class stereotype is boundary class. The boundary class used to model interaction between the system's surroundings and its inner workings. The boundary class interaction is involves transforming, translating events and noting changes in the system presentation. This class also model the parts of the system that depend on its surroundings. There are also class’s uses to model the parts that are independent of the system's surroundings such as entity classes and control classes. With that, the changing of communication protocol (GUI) mean changing only the boundary classes, not the entity and control classes. The boundary class also use to clarify the system's boundaries. With that, this class make it easier to understand the system. This class also providing a good point of departure for identifying related services for aid d...
Component Based Architecture creates a system that is easily extensible, promotes software reuse and intuitively understandable. A component often relates to an object in Object Orientated Programming. The RUP provides a systematic way to build this kind of system, focusing on producing an early executable architecture before committing full resources on a project.
Computer system plays an important role in solving human problem in their daily life. There are standard steps in order to develop information system called System Development Life Cycle (SDLC). SDLC is the framework available to build a complete system. There are five phases in SDLC which are planning, analysis, design, coding, testing and maintenance (refer to Figure 1 in Appendix 1).
One of them being the Unified Modeling Language also known as UML. In the article "The impact of UML documentation on software maintenance: An experimental evaluation." it describes that often most software maintenance is performed usually by people who were not involved with the original design. It goes on to say that “…designs often has been advocated as a necessity to help software engineers remain in intellectual control while changing complex systems.” Compounded by the fact that documentation eats up a lot of time and money. This has led to a tremendous problem. This is where UML comes into play, this is an evolving standard that companies are beginning to adopt to help stop this issue. UML gives a way to visualize a software’s architectural patterns in various diagrams. Some examples of this include components of a system and how they interact with other components, how the system will run, and how entities will interact with others. All of these diagrams work together to aid in the process of writing the actual code and the maintenance of the code in the future. It also serves as well written documentation that is easy to read. To sum up the article UML provides a cost-effective way of creating documentation because of that it also aids in the design
The Unified Modeling Language is a standard language for specifying, visualizing, constructing, and documenting the artifacts of software systems, as well as for business modeling and other non-software systems. The key is to organize the design process in a way that clients, analysts, programmers and other involved in system development can understand and agree on. The UML provides the organization. The UML was released in 1997 as a method to diagram software design, by some of the best minds in object oriented analysis and design. It is by far the most exciting thin to happen to the software industry in recent years. Every other engineering discipline has a standard method of documentation. Electronic engineers have schematic diagrams; architects and mechanical engineers have blueprints and mechanical diagrams. The software industry now has UML.
According to Knapp’s relationship model, his relationship model explains how relationships grow and last and how they end. His model is categorized into ten different stages which come under two interrelating stages: Knapp's’ relationship escalation model and Knapp's relationship termination model. The stage of the relationship in my group, there are two stages to put into my group: Intensifying and Integration. When a relationship progresses, there will be misunderstands and conflicts, and the so “Indefinite relationship” might fail to persist such a like coming together.
It is important to understand that patterns are not independent entities. The design patterns that are present at a high level of abstraction will influence the manner of applying other patterns at the lower levels of abstraction. In addition, patterns often collaborate with one another. The implication is the selection of an architectural pattern will likely influence the choice of component-level design patterns, which have the most effect (Pressman, 2010). Further, if selecting a specific interface design pattern, this can result in the need to use other patterns that collaborate with it.
Explain in around 600 words, citing any literature you have consulted, what is meant by these terms in relation of object-oriented software design, and explain how they relate to the design you developed in your group.
An association matrix is chart made up of rows and columns depicting every relationship that an individual has. Information is taken from investigative reports, public records, and testimony. Each person that is associated will also have as many known other relationships as well.