A component represents a modular part of a software system that encapsulates (hides) its contents, exposes public interface for provided services, and which is replaceable within system with equivalent or conformant components.
A component defines its behavior in terms of provided and required interfaces (potentially exposed via ports.) Internals of component are hidden and inaccessible other than as provided by its interfaces.
Larger pieces of a system's functionality may be assembled by reusing components as parts in an encompassing component or assembly of components, and wiring together their required and provided interfaces.
Feature represents a structural or behavioral characteristic of a classifier or of instances of classifiers. Examples of features are class properties and operations.
UML standardized the way to visualize a system's architectural blueprints. The standardized elements include:activitiesactorsbusiness processesdatabase schemaslogical componentsprogramming language statementsreusable software components
We use database to manage and store the information. UML in database stands for unified modelling language. The structure or designing of the database can be done through unified modelling language.
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OMT is a modelling technique and UML is a Modelling language. OMT stands for object modelling technique and is given by Jim Rambaugh . UML is unified Modelling language and has a layered architecture.
UML stands for Unified Modeling Language. It is a modelling language in software, designed to provide a standard way to visualize the design of a system.
You can find several examples of UML diagrams - use cases, components, activities, communication, deployment - for e-shopping in the provided link.
UML is visual language - various rectangles, ovals, lines, arrows, etc. each having special meaning and used to draw different diagrams.Microsof Visio is software product that you can purchase to draw UML diagrams on your computer. There are many other UML tools that you can get even for free to draw UML diagrams. Or you can draw UML diagrams with a pencil on a piece of paper.
unified modelling language
UML EXCHANGE FORMAT(UXF)UXF is a XML-based model interchange format for UML, which is a standard software modeling language. UXF is a simple and well-structured format to encode, publish, access and exchange UML models, and allows UML to be highly interoperable.given by vipul
UML diagrams are generally produced by electrical engineers and require a thorough knowledge of UML and the Java programming language. Drawing such a diagram is a project given to students in electrical engineering classes.
OverviewThe Unified Modeling Language (UML) is used to specify, visualise, modify, construct and document the artifacts of an object-oriented software intensive system under development.[1] UML offers a standard way to visualize a system's architectural blueprints, including elements such as:actorsbusiness processes(logical) componentsactivitiesprogramming language statementsdatabase schemas, andreusable software components.[2]UML combines best techniques from data modeling (entity relationship diagrams), business modeling (work flows), object modeling, and component modeling. It can be used with all processes, throughout the software development life cycle, and across different implementation technologies.[3] UML has synthesized the notations of the Booch method, the Object-modeling technique (OMT) and Object-oriented software engineering (OOSE) by fusing them into a single, common and widely usable modeling language. UML aims to be a standard modeling language which can model concurrent and distributed systems. UML is a de facto industry standard, and is evolving under the auspices of the Object Management Group (OMG). OMG initially called for information on object-oriented methodologies that might create a rigorous software modeling language. Many industry leaders have responded in earnest to help create the UML standard.[1]UML models may be automatically transformed to other representations (e.g. Java) by means of QVT-like transformation languages, supported by the OMG. UML is extensible, offering the following mechanisms for customization: profiles and stereotype. The semantics of extension by profiles have been improved with the UML 2.0 major revision.
Component and deployment diagrams are different UML diagrams. They both show components - but at different levels.Component diagram shows components and dependencies between them, interfaces they provide (implement) or require, classes that realize component. It has no deployment nodes - as deployment diagram does.Deployment diagram shows deployment architecture of system - how components and artifacts are deployed to nodes - execution environments and devices.Though we can show dependencies between components both on component diagrams as well as on deployment diagrams, but we are not showing implementation of components on deployment diagrams as we do on component diagrams.Note, that in UML 1.x deployment diagrams components were directly deployed to nodes. In UML 2.x artifacts are deployed to nodes, and artifacts could manifest components. So, on deployment diagrams components are now deployed to nodes indirectly through artifacts, and generally speaking in UML 2 deployment diagram could show only nodes and artifacts, and no components.