Uml Class Diagram

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Generating UML class diagram from source codes using mulit threading technique

Generating UML class diagram from source codes using mulit threading technique

The main purpose of UML is to provide a common vocabulary of object-oriented terms and diagramming techniques that enable developers to model any system. It is clear that UML has gained widespread acceptance as a notation for the analysis and design of software systems. According to Vidgen (2003), UML modeling helps in having a better understanding about a system. Currently, UML 2.4.1 specifies fourteen (14) UML diagrams (Ibrahim, N., 2013). They can be used to describe different views of a system. Structural view is specified by structure diagrams such as profile diagram, class diagram, composite structure diagram, component diagram, deployment diagram, object diagram, and package diagram, while the behavioral view is specified by behavior diagrams such as activity diagram, sequence diagram, communication diagram, interaction overview diagram, timing diagram, use case diagram, and state machine diagram (Ibrahim, N., 2013). Among the diagrams, UML class diagram, use case diagram, sequence diagram, and activity diagrams are the most frequently used diagrams by the UML practitioners (Dobing & Parsons, 2008, Grossman, et al., 2005). Each of the UML diagram is used to describe various aspects of a system. For example, use case diagram is used to highlight the main functions of a system and the roles that interact to it, while activity diagram is used to model the scenario of use cases in terms of dynamic aspect of a society of objects. On the other hand, sequence diagram is modeled to show the communication between objects in terms of sequence of messages, while the class diagram is to show the classes of the objects in term of their attributes, methods, and relationship with other classes. Table 2.1 presents the types of UML diagrams.
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Semantic annotation of requirements for automatic UML class diagram generation

Semantic annotation of requirements for automatic UML class diagram generation

knowledge acquisition are almost identical processes. Analysts can use several techniques necessary to extract relevant knowledge for software engineering. These knowledge define system expectations in terms of mission objectives environment, constraints, and measures of effectiveness and suitability. Thus, we need platforms and tools that enable the automation of activities involved in various life cycle phases of software engineering. These tools are very useful to extract functional and non- functional requirements from textual descriptions in order to develop graphic models of application screens, which will assist end-users to visualize how an application will look like after development. The aim of the work presented in this paper is to develop a tool that transforms a textual description to an UML class diagram. Our tool takes as input text data that represent textual user requirements descriptions. First, it identifies named entities (i.e., classes, properties and relationships between classes) and second it classifies them in a structured XML file.
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Generating UML class diagram from source 
		codes using multi threading technique

Generating UML class diagram from source codes using multi threading technique

The main area of concentration is the part of reverse engineering that is pertaining to generate class diagrams from source code. The reverse engineering concept here is explained in terms of the transformation of object oriented source codes to UML diagrams using the suggested approach. The application scope of this approach will be the C# source code only. The main focus will be on using asynchronous threading. This application accepts codes that are free from any syntax errors, while the parser that will be built according to the suggested approach is limited to extract class diagram but not to compile the source code. The input will be source code of C# language and the output will be a UML class diagram. Four relationships between classes and interfaces will be extracted: generalizations, realizations, association, and dependency.
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Formalization of transformation rules from XML Schema to UML Class Diagram

Formalization of transformation rules from XML Schema to UML Class Diagram

Reversing XML Schema to UML Class Diagram is a tedious and time consuming task. The conceptual diagrams that are used as a base document for communication between user and developer can be generated easily by using this formalization transformation method. The complete class diagram generated using more XML schema constructs is better developed. The formal transformation method is complete as ebXml case study has been tested.

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An Ameliorated Approach to Represent UML Class Diagram in the Table Format

An Ameliorated Approach to Represent UML Class Diagram in the Table Format

The proposed procedure is implemented for various types of UML Class diagram and the results we got are correct and complete. The sample UML Class diagram Table 1 is the input and Table 2 is the output of our methodology. In Table 1 the UML class has three compartments which contain class name, attributes and operations. This Class has a class name as Bank and has two attributes named BankCode and Address with visibility public and data type as integer and string. The third compartment of class has two operations with visibility public. The first operation is named as Manages and has two parameters Atm_info and Dcard with datatype string and integer. The second operation is named as Maintains with null parameters.
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Research on feature diagram and uml class diagram integration

Research on feature diagram and uml class diagram integration

2) A unique feature of FD2 is the ability to associate feature model elements with UML class diagram elements. The association shows which class diagram elements are represented by system features. This is very useful when there is a need to show differences in different product line systems described using UML class diagrams. The associations show, how system can be configured and the feature diagram syntax add logic, which product components are to be included. The FD2 tool allows configuring association of features and classes. It shows which features are included in configured product. Deselecting a feature means excluding a component from a product.
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Visio Tutorial 1BB50 Data and Object Modeling (DOM) How to make a UML Class Diagram 2004/2005

Visio Tutorial 1BB50 Data and Object Modeling (DOM) How to make a UML Class Diagram 2004/2005

13. In the window 'UML data type properties' you can define a new data type by entering its name in the "Name" field. For example, enter the SQL data type "Char(30)" in the name field. After that, go back to the data type scroll-down list of an attribute (see point 9). You can see that the data type Char(30) is added to the list. 14. Now try to make/define the following data types in the same way explained above: Char(1), Char(255). Then

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Specification of vertical semantic consistency rules of UML class diagram refinement using logical approach

Specification of vertical semantic consistency rules of UML class diagram refinement using logical approach

Object-oriented design (OOD) is a technique of design that deals with object- oriented breakdown and a notation for representing both logical and physical as well as static and dynamic aspect of the system under design (Booch, 2007). OOD uses class and object concepts to structure a system logically while structural design uses algorithmic concepts. The objective of OOD is to design classes (identified during the analysis phase), graphical user interface classes and add other classes that will breakdown or refine the classes obtained in the analysis phase. Furthermore, during this phase, other objects and classes that will support implementation of the user‟s requirements, may also be identified and defined, such as classes for connection to the database (Booch, 2007). Consequently, produces a technical description of how solution to client‟s requirements and expectations can be achieved using the various diagrams of UML. The following section gives details information on UML, definition, and notations of a class diagram.
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An Approach to Automated Conceptual Database Design Based on the UML Activity Diagram

An Approach to Automated Conceptual Database Design Based on the UML Activity Diagram

The fact that business modeling and database design often use different notations, which usually don’t conform to the same or common metamodel, poses a particular problem and challenge in the automated CDM design based on a business model. Business modeling is usually characterized by process- oriented notations, such as IDEF0 [24], EPC [35], Petri nets [30], BPMN [39], etc. On the other hand, the E-R notation, introduced by Chen [9], or one of its modifications such as IE [22], is traditionally used for conceptual database modeling, while the development of UML has seen an increasing use of the UML class diagram as well [23]. Different, i.e. non-harmonized notations are one of the reasons for a fairly small number of papers in the field. One of the ways to overcome this problem is the use of UML for both business modeling and database design. In this paper we present an approach to the automated design of the initial CDM 1 using the unified UML-based notation.
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Mapping UML Class Diagrams into Object-Relational Schemas

Mapping UML Class Diagrams into Object-Relational Schemas

Many papers can be found in the open literature related to the transformation from objects models into relational tables (SQL’92). Recent examples of these transformations can be read in [1], [2], [3] and [9]. Articles about the transformations from objects to object-relational databases are not as frequent. Mok and Paper [7] have presented the transformation of UML models into ORDBMS. Their work was concerned about static and dynamic aspects. In the static aspects they have concentrated the efforts on transforming UML class diagrams into normalized nested tables. They have presented an algorithm to cover this objective. No formalized procedures for more general mappings are presented in this work. Marcos et al. [6] have listed some guidelines about the transformation of UML class diagrams into objects of the SQL:1999 standard and then to Oracle 8i. A short explanation about those transformations is also given, no further analysis is made and this approach can be considered as guidelines for the design of conceptual schema of object-relational databases. Liu et al. [5] have proposed an approach for implementing ORDBMS’s by using a heterogeneous database system architecture. Although at that time the SQL:1999 standard was not completed yet, their work is valuable in the sense that they have made some definitions in order to formalize the design of the ORDBMS. Golobisky et al. [4] have presented a transformation analysis about generalization- specialization relationships modeled by UML class diagram. They have shown several transformations into an ORDBMS. In the analysis they have taken into account several important characteristics for applications linked to an ORDBMS like: implementation flexibility, access mechanisms (index structures) and constraints, navigability thorough the structures. The authors have implemented some examples by using Oracle 9i ORDBMS.
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Generating natural language specifications from UML class diagrams

Generating natural language specifications from UML class diagrams

Part of the KeY project is to automatically translate formal software specifications into NL [14,15,36]. The system is built around the Grammar Framework (GF), a for- malism for defining grammars. A GF grammar consists of one part which describes abstract syntax, and another part which describes concrete syntax [14]. The abstract syntax part is formulated in a version of Martin-Löf’s type theory [46], and can be seen as a description of how to construct abstract syntax trees. The concrete syntax then consists of linearization rules telling how to present these trees as expressions of a particular language [16]. To translate OCL to NL, the OCL specifications are first input to an OCL parser. The parser has been derived based on a context-free grammar of OCL [14]. Using this parser, a syntax tree in the context-free OCL grammar can be produced for a given OCL specification. This tree is then fed into an OCL type checker/annotator together with a file containing information about the UML class diagram, which adds a lot of type annotations and other disambiguating annotations [14]. The generated parts of the grammar are derived from the UML model, and con- sist of default rules for the generation of the user defined entities of the model. The work is very domain specific and a CF is created for each specification. However, the results produced are good. Similar to our work, other UML diagrams such as the in- teraction diagrams, state diagrams and activity diagrams are not used.
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Textual Requirement Analysis for UML Diagram Extraction by using NLP

Textual Requirement Analysis for UML Diagram Extraction by using NLP

Requirement analysis is the preliminary step in software development process. The requirements stated by the clients are analyzed and an abstraction of it, is created which is termed as requirement model. The automatic generation of UML diagram from natural language requirements is highly challenging and demanding very efficient methodology. Unified Modeling Language (UML) models are helpful for understanding the problems, communicating with application experts and preparing documentation. The static design view of the system can be modeled using a UML class diagram. System requirements stated by the user are usually in natural language form. This is an imprecise and inconsistent form which is difficult to be used by the developer for design UML model. We present a new methodology for generating UML diagrams or models from natural language problem statement or requirement specification. We have named our methodology as Requirement analysis and UML diagram extraction (RAUE).
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Evaluating the complexity of UML class diagrams

Evaluating the complexity of UML class diagrams

This research is focused on evaluating the quality based on the complexity of the UML class diagrams which describes the structure of a system by showing the system's classes, their attributes, and the relationship among the classes. We focus our work on UML class diagram complexity measurement.

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Construction of RDF(S) from UML Class Diagrams

Construction of RDF(S) from UML Class Diagrams

We carried out construction experiments using the implemented tool UML2RDFS, with a PC ( CPU P4 / 3.0GHz, RAM 3.0GB and Windows XP system ) . We choose more than thirty UML class diagrams including all features of UML mentioned in Section 2.1. Many more complex UML diagrams which consist of these features can be converted into RDF ( S ) by jointly using our approach and tool. The UML class dia- grams used in our tests are mainly from the following parts: Some come from the existing UML diagrams from the website ( http://www .uml-diagrams.org/index-examples.html ) , e.g., Library domain model, Online shopping domain, etc.; Some are created manually by us, with the CASE tool PowerDesigner, e.g., one of the UML diagrams mentioned in Section 3.2. Their sizes range from 40 to 3000 ( here the scale of an UML class diagram denotes the numbers of classes, attributes, roles, associations, and re- lations in the UML diagram ) . The test results show that our approach and tool actually work, and the time complexity of the conversion is linear with the scales of UML diagrams, which is consistent with the theoretical analysis. Here we briefly analyze the time complexity of the al- gorithm UML2RDFS Const in Figure 5. Since the conversion of UML symbols to RDF ( S ) re- source identifiers ( i.e., Step 1 of the algorithm ) can be simultaneously made as sub-operations in creating RDF ( S ) triples ( i.e., Step 2 of the algorithm ) , we can ignore the amount of work done in the first step and consider only the cre- ation of triples in the second step. Also, we con- sider the conversion operations and ignore the preprocessing operations ( i.e., the parsing and extracting of the XML-coded file of an UML di- agram ) , that is, we exclude the amount of work done by an XML parser ( e.g., the DOM API for Java in our implementation ) that parses the UML diagram ( i.e., an XMI-coded file ) and ex- tracts and prepares the element data in computer memory for the usage in the conversion proce- dure of the algorithm. In this case, the time complexity of the algorithm mainly depends on the structure of an UML diagram. Suppose the scale of an UML diagram is N = N C + N A +
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Transforming Simplified Requirement in to a UML Use Case Diagram Using an Open Source Tool

Transforming Simplified Requirement in to a UML Use Case Diagram Using an Open Source Tool

The successful development of this software system which could transform User Stories to Use Case Models, would be a partial validation of our Ontology Based Framework, which was published in 2013 [7], [19]. At that stage, using this Ontology Based Framework as a basis, we could develop software which could not only transform User stories to Use case model, ERDs into Class diagrams - (a transformation which has already been conceptually validated by another experiment [20] – but also develop software which could perform other transformations such as lower level DFD to State Diagram and Sequence Diagram, Flow Chart to Activity Diagram, Entity Life History to State Diagram, and so on and so forth.
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A Simple Implementation of UML Sequence Diagram to Java Code Generation through XMI Representation

A Simple Implementation of UML Sequence Diagram to Java Code Generation through XMI Representation

Here, in this work the code generation happens based on the sequence diagram, in which focuses on the message interchange between a numbers of lifelines. Each lifeline represent the participant in the interaction, here it is the object of the class. The message passed between the objects is the sequence flow of the program. Message can be defined as a named element, one specific kind of communication between lifelines of an interaction. Each message reflects either an operation call or sending and reception of a signal, so that message could be of actions like: synchronous call, asynchronous call and asynchronous signal [6].
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Visualizing Class Diagram Using Orientdb Data-Store

Visualizing Class Diagram Using Orientdb Data-Store

OrientDB(Document+Graph) - OrientDB is a 2nd Generation Distributed Graph Database [10] and the first Multi-Model Open Source NoSQL DBMS that carries together the power of graphs and the flexibility of documents into one scalable high-performance [13] operational database. First generation Graph Databases lack the features that Big Data demands: multi-master replication[6], sharding[6] and more flexibility for modern complex use cases. OrientDB is incredibly fast as can store 220,000 records per second [10] on common hardware. Even for a Document based database, the relationships are handled as in Graph Databases with direct connections within records. You can traverse parts of or entire trees and graphs of records within few milliseconds. OrientDB supports schema-less, schema-full and schema-mixed modes [10], has a strong security profiling system based on roles and users, supports SQL amongst the query languages. Being a document database one can store any document on a vertex, being a graph database one can introduce new edges and properties. It allows schemas to be introduced at runtime. Class diagram with OrientDB helps to store the state of the system. Almost for every system a domain model (or logical information model) is framed which describes what information the system must maintain. The state of the art for shaping such models is to build an object-oriented class diagram, typically in UML. This model represents classes with their properties and associations among classes. With most databases there is some impedance mismatch when mapping the canonical model as in Relational model there is no support for inheritance, polymorphism and relationships have to be mapped into keys. In graph databases there is also no support for polymorphism, inheritance and complex properties introduces new vertices. A document database also does not provide support for polymorphism and provides very limited support for relationships. In OrientDB the mapping eliminates all impedance mismatch as object becomes a vertex, complex properties are handled by documents, provides explicit support for relationships, inheritance and polymorphism.
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Design Architecture Class Diagram for A Comprehensive Testing Tool

Design Architecture Class Diagram for A Comprehensive Testing Tool

[HIM00] Unified Modeling Language (UML) is widely used for the design and implementation of distributed, component-based applications. In this paper, the issue of testing components by integrating test generation and test execution technology with commercial UML modeling tools such as Rational Rose is addressed. The authors present their approach to modeling components and interactions and describe how test cases are derived from these component models and then executed to verify their conformant behavior. The TnT environment of Siemens is used to evaluate the approach by examples 13 .
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Test Case Generation and Minimization using UML Activity Diagram in Model Driven Environment

Test Case Generation and Minimization using UML Activity Diagram in Model Driven Environment

In our work test cases for different projects are generated through a tool called test optimal tool. That generated test cases are stored in either in excel file in table format or in HTML format. Data of generated files are extracted through code and store it into database. Stored test cases are larger in number which are minimized with the help of changes done in original activity diagram of a project. Original and modified activity diagrams are compared through software to identify common and uncommon test suites. We will test our project through different activity diagram of number of projects of same domain and finally analytics of change and minimization is presented through graph. With the advent of technology software becomes very crucial part in all the institute and industries. To develop particular software and to test it as per customer requirement is very important because the software which is not able to satisfy customer requirement after development will leads to increase and waste of cost, time and effort of all parts of organization. Model- based test case generation is gaining acceptance to the Design and implementation of new technique for optimum number of test cases generation and minimization using model driven testing.
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OBTAINING STATES INVARIANTS FROM CLASS DIAGRAM IN UML.P

OBTAINING STATES INVARIANTS FROM CLASS DIAGRAM IN UML.P

Through a simple analysis of the UML.P language we notice that there are explicit and implicit in- formation in each diagram model. Among them the simplest one that can be easily noticed is the multiplicity information of an association relation- ship. Although the simplicity of this state invari- ant, we can use it and others information to check if an initial state and a final state are correct, based on the domain definition. Another impor- tant verification that we can do is the analysis of the domain’s operators, checking if any of them could drive to an unexpected or incorrect state.
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