UML Tutorial

Software engineering (SE) is concerned with developing and maintaining software systems that behave reliably and efficiently, are affordable to develop and maintain, and satisfy all the requirements that customers have defined for them. It is …

 Definitions of Software Engineering Over the years, numerous definitions of the discipline of Software Engineering have been presented. For the purpose of this document, we highlight the following definitions: “The establishment and use of sound …

Software Engineering Approaches Responsibility-driven versus data-driven approaches It is often said that data are more stable than functions and so data-centred approaches are to be preferred in most cases. However, one of the greatest dangers …

Evolution of UML Identifiable object-oriented modeling languages began to appear between mid-1970 and the late 1980s as various methodologists experimented with different approaches to object-oriented analysis and design. The number of identified modeling languages increased …

Use of the Unified Modeling Language (UML) has quickly spread throughout the software development industry as a concrete foundation for designing and developing software applications. It has become the de facto standard in the world …

  Pros and Cons of UML Pros: Wide Industry Acceptance in comparison to previous Modeling Language. Supports OOAD methodology Bridges the communication gap between different entities of system development(i.e . System Analyst, Developer, Client etc) …

Diagrams in UML UML 2 defines many basic diagram types, divided into two general sets: 1. Structural Modeling Diagrams Structure diagrams define the static architecture of a model. They are used to model the ‘things’ …

Structural Modeling Diagrams Structure diagrams define the static architecture of a model. They are used to model the ‘things’ that make up a model – the classes, objects, interfaces and physical components. In addition, they …

   Behavioral Modeling Diagrams Behavior diagrams capture the varieties of interaction and instantaneous states within a model as it ‘executes’ over time; tracking how the system will act in a real-world environment, and observing the …

Package diagrams In the Unified Modeling Language(UML), a package diagram depicts how a system is split up into logical groupings by showing the dependencies among these groupings. As a package is typically thought of as a …

Class Diagram In the Unified Modeling Language (UML), a class diagram is a type of static structure diagram that describes the structure of a system by showing the system’s classes, their attributes, and the relationships between the classes. The class diagram …

Composite Structure diagrams A Unified Modeling Language (UML) composite structure diagram shows the internal structure of a class and the collaborations that this structure makes possible. This can include internal parts, ports through which the parts interact with each …

Component diagrams In the Unified Modeling Language, a component diagram depicts how a software system is split up into physical components and shows the dependencies among these components. Physical components could be, for example, files, headers, link libraries, modules, executables, or packages. Component diagrams …

Implementation Diagram In the Unified Modeling Language, a deployment diagram serves to model the hardware used in system implementations, the components deployed on the hardware, and the associations between those components. The elements used in deployment …

Activity Diagrams In the Unified Modeling Language, an activity diagram represents the business and operational step-by-step workflows of components in a system. An activity diagram shows the overall flow of control. In UML, an activity diagram is used to display the …