what is uml what are the basic elements?
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Three Types. Structural things -- The nouns of UML models. These represent elements that are conceptual or physical. There are seven kinds of structural things: Class, Interface, Collaboration, Use Case, Active Class, Component, and Node.
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Each of these subsystems consists of only five basic components: (1) action element, (2) sensing mechanism, (3) control element, (4) decision element, and (5) program. Action elements are those parts of an automated system that provide energy to achieve the desired task or goal.
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Unified Modeling Language (UML) While a DFD illustrates how data flows through a system, UML is a modeling language used in Object Oriented Software Design to provide a more detailed view.
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['Language Fundamentals.', 'OOPs Concepts.', 'Interface and Abstract class.', 'Exception Handling.', 'Collection Framework.', 'Multithreading.', 'Packages.', 'Swings.']
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['Machine data types.', 'Boolean type.', 'Numeric types.', 'Enumerations.', 'String and text types.', 'Pointers and references.', 'Function types.']
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['Map conceptual model to logical model components.', 'Validate logical model using normalization.', 'Validate logical model integrity constraints.', 'Validate logical model against user requirements.']
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There has to be an offer and acceptance, the essential elements of a contract are the offer and acceptance (constituting the agreement), the consideration or the seal, the parties and the subject matter. The presence of all of these elements creates a valid contract.
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['Identifier.', 'Id.', 'Name.', 'Link.', 'DOM.', 'XPath.', 'CSS.', 'UI-element.']
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['Control Flow. Probably the most basic topic on the list. ... ', 'Error handling. This took a while for me. ... ', 'Data Models. ... ', 'Asynchronity. ... ', 'DOM Manipulation. ... ', 'Node. ... ', 'Functional Approach. ... ', 'Object Oriented Approach.']
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Embedded systems UML can also be used for modelling the system from functional requirements through executable specifications and for that purpose it is important to be able to model the context for an embedded system – both environmental and user-driven.
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So here are the 5 basic concepts of any programming language: Variables. Control Structures. Data Structures.
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There are three main models of data modeling like conceptual, logical, and physical. A conceptual model is used to establish the entities, attributes, and relationships. A logical data model is to define the structure of the data elements and set the relationship between them.
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['State Machine Model. The state machine model is based on a finite state machine, as shown in Figure 5.6. ... ', 'Information Flow Model. ... ', 'Noninterference Model. ... ', 'Confidentiality. ... ', 'Integrity. ... ', 'Other Models.']
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['Introduction - It should contain Purpose, Scope, Background, References, Assumptions and constraints, document overview.', 'Methodology.', 'Functional Requirements.', 'Modelling Illustrations - Context, User Requirements, Data Flow Diagrams, Logical Data Model/Data Dictionary, Functional Requirements.']
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The basic communication model consists of five elements of communication: the sender, the receiver, the message, the channel and feedback. 3.
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["Elements. An element is a single 'chunk' of code comprising of an opening and closing tag. ... ", 'Tags. Tags are the bits that make up elements. < ... ', 'Attributes. An attribute is a piece of code attached to a tag which supplies additional information:']
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Data flow diagram symbols and notation Depending on the methodology (Gane and Sarson vs. Yourdon and Coad), DFD symbols vary slightly. However, the basic ideas remain the same. There are four basic elements of a data flow diagram: processes, data stores, external entities, and data flows.