Unified modeling language and object constraints language

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Role-based Authorization Constraints Specification Using Object Constraint Language

Role-based Authorization Constraints Specification Using Object Constraint Language

George Mason University eshin@gmu.edu Abstract The purpose of access control is to limit the actions on a computer system that a legitimate user can perform. The role-based access control (RBAC) has generated great interest in the security community as a flexible approach in access control. One of important aspects in RBAC is constraints that constrain what components in RBAC are allowed to do. Although researchers have identified useful constraints using formal specification languages such as RCL2000, there still exists a demand to have constraints specification languages for system developers who are working on secure systems development. In this paper we discuss another approach to specify constraints using a de facto constraints specification language in software engineering arena. We use a declarative language, Object Constraints Language (OCL) that is part of the Unified Modeling Language (UML) and has been used in object-oriented analysis and design. We describe how to specify previously identified role- based authorization constraints and future direction of this work is also addressed.
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An Effective Language for Object Oriented Design UML(Unified Modeling Language)

An Effective Language for Object Oriented Design UML(Unified Modeling Language)

This paper articulates a way of using unified modeling language (UML) to develop business value chain activities for any enterprise by introducing basic fundamentals to develop dynamic, adhoc and agile business model. The results show that the UML is useful in the development of information systems and is independent of any programming language. The heart and soul of effective object models is its strategies and patterns, not the shape of an icon or the number of adornments. Unified Modeling Language is a standard modeling and programming language for writing software blueprints. It is very expressive language, addressing all the views needed to develop and then deploy such systems. Modeling is a central part of all the activities that lead up to the deployment of good software. Modeling is a proven and well accepted engineering technique.
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Visual Debugging of Object-Oriented Systems with the Unified Modeling Language

Visual Debugging of Object-Oriented Systems with the Unified Modeling Language

Debugging of large object-oriented systems is a difficult cognitive process that requires understanding of both the overall and detailed behavior of the application. In addition, many such applications linked through a distributed system add to this complexity. Standard debuggers do not utilize visualization techniques, focusing mainly on information extracted directly from the source code. To overcome this deficiency, this research designs and implements a methodology that enables developers to analyze, troubleshoot and evaluate object-oriented systems using visualization techniques. It uses the standard UML class diagram coupled with visualization features such as focus+context, animation, graph layout, color encoding and filtering techniques to organize and present information in a manner that facilitates greater program and system comprehension. Multiple levels of abstraction, from low-level details such as source code and variable information to high-level structural detail in the form of a UML class diagram are accessible along with views of the program’s control flow. The methods applied provide a considerable improvement (up to 1110%) in the number of classes that can be displayed in a set display area while still preserving user context and the semantics of UML, thus maintaining system understanding. Usability tests validated the application in terms of three criteria – software visualization, debugging, and general system usability.
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Introduction. UML = Unified Modeling Language It is a standardized visual modeling language.

Introduction. UML = Unified Modeling Language It is a standardized visual modeling language.

● A state diagram models the states an object can be in and.. the stimuli that cause it to change states..7[r]

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Modelica TM - A Unified Object-Oriented Language for Physical Systems Modeling. TUTORIAL and RATIONALE

Modelica TM - A Unified Object-Oriented Language for Physical Systems Modeling. TUTORIAL and RATIONALE

connection between power ports. This connection is a point-to-point connection, i.e. only one bond can be connected to a power port. When preparing for simulation, the bonds are embodied as two-signal connections with opposite directions. This signal direction depends on both the internal description of the submodel and the structure of the bond graph where the submodel is used; it is an algorithmic process. Consequently, the model equations are non-causal. Within some submodel equations, the power directions of the connected bonds are used in generating the proper equations. As a consequence, it must be possible to define rules about the connection structure, especially that only one-to-one connections are possible. Furthermore, it must be possible to inquire the direction of a connection in a component, in order that the positive energy flow direction can be deduced. Since bond graphs can be mixed with block-diagram parts, bond- graph submodels can have power ports, signal inputs and signal outputs as their interfacing elements. Furthermore, aspects like the physical domain of a bond (energy flow) can be used to support the modeling process, and should therefore be incorporated in Modelica. Note that the power bonds can be multi dimensional, i.e., are composed of a matrix of single power bonds.
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Hardware Verification with the Unified Modeling Language and Vera

Hardware Verification with the Unified Modeling Language and Vera

The concept of modeling is nothing new per se and is an accepted practice in many different industries. In the aerospace industry before a new plane is built, many different models of various types are generated. First there will be a multitude of computer simulations written to describe how the plane will react in situations that it is likely to encounter, i.e. wind, rain, snow. The next step is to create to-scale physical models of the plane that will be produced and test them to acquire another view of how the plane will react. This all occurs before the plane is even built. In the construction industry, no one would attempt (or even be allowed) to start a high-rise building project without first having detailed blueprints of the building, describing everything from the electrical system to the internal skeleton of the building.
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UML basics: An introduction to the Unified Modeling Language

UML basics: An introduction to the Unified Modeling Language

language and not a methodology. This is important, because a language, as opposed to a methodology, can easily fit into any company's way of conducting business without requiring change. Since UML is not a methodology, it does not require any formal work products (i.e., "artifacts" in IBM Rational Unified Process ® lingo). Yet it does provide several types of diagrams that, when used within a given methodology, increase the ease of understanding an application under development. There is more to UML than these diagrams, but for my

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Smoothed marginal distribution constraints for language modeling

Smoothed marginal distribution constraints for language modeling

1 www.opengrm.org Natural language applications, however, are commonly used in scenarios requiring relatively small footprint models. For example, applica- tions running on mobile devices or in low latency streaming scenarios may be required to limit the complexity of models and algorithms to achieve the desired operating profile. As a result, statisti- cal language models – an important component of many such applications – are often trained on very large corpora, then modified to fit within some pre-specified size bound. One method to achieve significant space reduction is through random- ized data structures, such as Bloom (Talbot and Osborne, 2007) or Bloomier (Talbot and Brants, 2008) filters. These data structures permit effi- cient querying for specific n-grams in a model that has been stored in a fraction of the space required to store the full, exact model, though with some probability of false positives. Another common approach – which we pursue in this pa- per – is model pruning, whereby some number of the n-grams are removed from explicit storage in the model, so that their probability must be as- signed via backoff smoothing. One simple prun- ing method is count thresholding, i.e., discarding n-grams that occur less than k times in the corpus.
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Design and Analysis of Software Architecture with Unified Modeling Language

Design and Analysis of Software Architecture with Unified Modeling Language

AIM & ACT Banasthali University Tonk (Rajasthan), India Abstract: Software Architecture is being widely used today to describe a very high level design methodology of large & heterogeneous software systems. A good Architectural representation scheme holds the key to the effectiveness of a Software architecture description and usage. In this paper, we look at UML (unified modeling language) as a prospect for a generalized architecture description language. UML also “unifies" the design principles of each of the object oriented methodologies into a single, standard, language that can be easily applied across the board for all object-oriented systems and a scheme AND-OR DFD method is introduced and developed.
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Merging of Data Flow Diagram with Unified Modeling Language

Merging of Data Flow Diagram with Unified Modeling Language

Shiroiwa, Miura, Shioya proposed a Meta model approach, in this approach authors propose DFD meta model that describes the DFD semantics formally. Author also discuss the generation of UML models (Use-Case Diagram, Class Diagram, Sequence Diagram) using the DFD meta model. Proposed meta model is used as a mediator between DFD and UML [7]. Tan, Yang, Blan proposed a systematic transformation of functional analysis into Object-oriented design and implementation. In this approach, an enhanced data flow diagram called DF net was proposed which is used to specify use cases from requirements. The DF net is transform to generate object oriented designs. Transformation between DF net was done in different steps. In the first step processes dealing with data stores executed through DF net are grouped together with external entities and data buffers and processes that are sharing same data are grouped together. In the next step classes are generated from different groups [8].
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TDDC88 Lab 2 Unified Modeling Language (UML)

TDDC88 Lab 2 Unified Modeling Language (UML)

"potential classes" for a class diagram. However, make sure that only relevant nouns are used. To become a class the noun shall represent a true or abstract object being manipulated by the system. Sometimes it is more natural to make a noun becoming an attribute, for instance that the pin-code is an attribute of the class customer. You also need operations, that is, functions you can call to make something happen. For instance, you can have an operation of a customer class called changePinCode()

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Common Pattern Modeling Language for Object and Component Architectures

Common Pattern Modeling Language for Object and Component Architectures

Design patterns are widely used as a meaning to capture and provide valuable expert information in order to describe a solution for a given problem or to provide a selected property. By choosing one or more patterns and applying them during the software development life cycle, software engineers are able to use proven building blocks for achieving software on a large scale. In our work, we deal with a pattern modeling language as a new representation of patterns to ease their application and categorization in software engineering. In this paper, we demonstrate the capabilities of our pattern modeling language for software architectures. For that, we propose a framework based on a process with patterns within a set of model transformation rules to target object and component architectures. This leads to a simple way to model patterns for reuse independently from the targeted system-under-development’s architecture. To illustrate the approach we consider an example of a secure communication pattern.
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Unified Modelling Language

Unified Modelling Language

This task will also require utilization of application business logic for integrity constraints. Too many course restrictions will require determining the proper upper limit of courses or units the student is allowed to take (as this will vary based on different business rules – GPA, probation, major, etc.) then comparing this with the prior number committed to and the new total if the requested course is added. The unpaid fees restriction will require matching the student id with the identifier in the financial office d atabase and returning an OK flag or a set of values pertaining to the unpaid fee indication.
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The Design of Population Data Application Using Unified Modeling Language

The Design of Population Data Application Using Unified Modeling Language

1 alimhardiansyah@ista.ac.id, 2 ravie@ista.ac.id, 3 hally009@ista.ac.id Abstract—Population data collection at the sub-district level still uses a manual system. It is causing less efficient time. In this study the application of population data is generated in the sub-district, using web applications and using the Unified Modeling Language design. With the above considerations, we need a system that can solve population data problems. With this application, it is expected that it will facilitate the processing of population data. This new application can accelerate the process of population registration with the help of human resources who can run it. Advice needed human resources that can run the application properly.
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CiteSeerX — OMG Unified Modeling Language TM (OMG UML)

CiteSeerX — OMG Unified Modeling Language TM (OMG UML)

which means that a Person may either be an Employee or not. Taken together, the diagram indicates that a Person may be 1) either a Man or Woman, and 2) an Employee or not (a total of four options). Figure 9.23 GeneralizationSets and constraints One of the ways botanists organize trees is by species. Each tree we see may be classified as an American elm, sugar maple, apricot, saguaro—or some other species of tree. The class diagram below expresses that each Tree Species classifies zero or more instances of Tree, and each Tree is classified as exactly one Tree Species. For example, one of the instances of Tree could be the tree in your front yard, the tree in your neighbor’s backyard, or trees at your local nursery. Furthermore, this figure indicates the relationships that exist between these two sets of objects. For instance, the tree in your front yard might be classified as a sugar maple, your neighbor’s tree as an apricot, and so on. This class diagram indicates that each Tree Species is identified with a Leaf Pattern and has a general location in any number of Geographic Locations. For example, the saguaro cactus has leaves reduced to large spines and is generally found in southern Arizona and northern Sonora. Additionally, this figure indicates each Tree has an actual location at a particular Geographic Location. In this way, a particular tree could be classified as a saguaro and be located in Phoenix, Arizona.
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Comparative Study on Extended Entity Relationship and Unified Modeling Language

Comparative Study on Extended Entity Relationship and Unified Modeling Language

II. Related work The evaluation process of conceptual specifications developed using either Extended Entity- Relationship (EER) or Unified Modeling Language (UML) conceptual models. It provides a comprehensive framework for evaluating EER and UML conceptual schemas. Furthermore, it defines classes of metrics facilitating the evaluation process and leading to the choice of the appropriate representation among several schemas describing the same reality. Based on quality criteria proposed in the literature to select a subset of criteria relevant to conceptual EER schema quality evaluation. Finally, this evaluation process to UML schemas Following the development of framework, analyze a case study and provide evidence in the support of the usefulness of the framework.
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BIBLIOGRAPHY. Algebraic Specification, ACM. The Unified Modeling Language User

BIBLIOGRAPHY. Algebraic Specification, ACM. The Unified Modeling Language User

ASF: an algebraic specification formalism, Technical Report CS-R8705 , Department of Software Technology, Centre for Mathe- matics and Computer Science, Amsterdam.. Bergstra, J.[r]

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Engineering Privacy for Big Data Apps with the Unified Modeling Language

Engineering Privacy for Big Data Apps with the Unified Modeling Language

privacy-by-policy that focuses on notice and choice principles, and privacy-by-architecture that focuses on pseudonymity, anonymity, and client-side protection architectures. Jutla and Bodorik (2005) propose a client- side socio-technical architecture, supporting multiple personas, and multiple service agents to protect user’s privacy. International start-up companies, e.g. Privowny.com, many hooked to the Vendor Relationship Management 4 and the Personal Data Ecosystem umbrella projects, are now commercializing services that bear close resemblance to agents documented in (Jutla and Bodorik 2005, Jutla et al, 2006). Cranor (2002) was a major contributor to P3P, Platform for Privacy Preferences, an XML-based language for privacy to facilitate automation of privacy-related tasks. P3P attempted to help organizations efficiently and transparently communicate their privacy practices to their customers. Spiekerman and Cranor (2009) contribute a framework with characteristics for privacy-friendly system design. The framework is based on a spectrum; from the user as being identified to being fully anonymous. Our work is complementary and advancing as it directly facilitates the software engineer to build an UML analysis model of a system that embeds de- identification and other privacy services.
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Review on StarUML an Open-Source Unified Modeling Language Tool

Review on StarUML an Open-Source Unified Modeling Language Tool

pvnjacks50@gmail.com ABSTRACT Poor planning is one of the top reasons why software projects are delivered late, over budget, or not at all, so it’s important to get organized before start coding. Wide range of modeling tools that make it relatively easy to lay out the functionality and use cases for a new project. One of the most popular languages that are used to represent software design is the UML. The Unified Modeling Language (UML) is the most widely used design notation for software at this time, unifying a number of popular approaches to specifying structure and behavior. In the last decade, the Unified Modeling Language (UML) has become a de-facto standard as modeling language in software engineering. Nearer to 200 Commercial and open source tools which provide UML modeling capabilities available in market. In this paper we concentrate on StarUML. StarUML is an open source tool to develop fast, flexible, extensible, feature-full, and freely-available UML/MDA platform running on Win32 platform. StarUML is excellent in customizability to the user’s environment and has a high extensibility in its functionality. In this we present paper summarized study on open source technology, UML, StarUML. We hope it will be help to Academic person, Student, Research, and those who are interested in software engineering field.
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Unified Modeling Language for Describing Business Value Chain Activities

Unified Modeling Language for Describing Business Value Chain Activities

1. INTRODUCTION It is really difficult to integrate the systems that are designed to work independently for attaining particular functionality done, for example SCM, CRM, and ERP etc these systems are not designed to work together. More generally, the integration between ERP and CRM can be defined as a medium to collaborate front-end and back office operation of an organization that applied them. They enable customers and business partner to be included into value chain inward to and outward from the organization, and encourage the collaboration between companies. It is also identified by Chong Kwong Chen (May2011) that in this era of competitive business world SCM, CRM and ERP has become the most influential enterprise systems in term of improving competitive advantages of an organization. But it is also found that these systems running in companies are continue to exist in isolation and become less relevant in today business context due to lack of integrated information achievable through each of the system respectively. The four major reasons that Chong K.C suggested are existing systems lack of functional interoperability, customer and supplier insufficiently collaborated with existing ERP, no standards or open standard methodology for information exchange and lack of interfacing mechanism or tool to cater system change. Till date, many experts and researchers have put forward software models, but most of them are based on the traditional structured method, this paper uses UML and object-oriented analysis method to analyze business modeling value chain activities, the model can enhance the exchange among the experts, software designers and users, making system develop smoothly. According to Chang and Makatsoris (2001), “It is
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