An interface is a classifier that declares of a set of coherent public features and obligations. An interface specifies a contract. Any instance of a classifier that realizes (implements) the interface must fulfill that contract and thus provides services described by contract. Since interfaces are declarations, they are not instantiable.

Jan 2, 2025 · An Interaction Overview Diagram (IOD) is a type of UML (Unified Modeling Language) diagram that illustrates the flow of interactions between various elements in a system or process. It provides a high-level overview of how interactions occur, including the sequence of actions, decisions, and interactions between different components or objects.

You can use interfaces in class diagrams and component diagrams to specify a contract between the interface and the classifier that realizes the interface. Each interface specifies a well-defined set of operations that have public visibility.

A UML interface is a collection of operation signatures and/or attribute definitions that ideally defines a cohesive set of behaviours. UML interfaces are implemented, “realized” in UML parlance, by classes and components – to realize an interface, a class or component must implement the operations and attributes defined by the interface.

A provided interface is the one that is either realized directly by the component itself, or; realized by one of the classifiers realizing component, or; is provided by a public port of the component. Required Interface: User Services component requires IOrderServices interface. A required interface is either

I haven't understood well how to use port, connector and interfaces in a UML2 component Diagram. I understand that a component can be a physical or a logical component, is the same with interfaces? For example a required import becomes a required interface in component diagram or a simple usage as in class diagram?

Apr 17, 2016 · I'm trying to understand how can I draw a UML diagram of a program that extends one class and implements another interface. I've made this sketch but I'm not sure if it is correct. A is a class that has some fields and methods and B is an interface which has some methods.

Interfaces are almost exactly identical to Classes in that they have attributes and operations and can participate in associations or generalization relationships. The biggest difference is that they are considered fully "abstract" and as such cannot be used to create instances.

In UML modeling, you can add interfaces to class diagrams and component diagrams to specify a contract between the interface and the classifier that realizes the interface.

Feb 16, 2013 · You can have a class defined with all its methods abstract - in which case there is close similarity with an interface. One key idea in UML, though, is that an interface is a set of methods exposed to other classes or components. The purpose is to define a set of operations.