Expressing Measurement Uncertainty in OCL/UML Datatypes

Uncertainty is an inherent property of any measure or estimation performed in any physical setting, and therefore it needs to be considered when modeling systems that manage real data. Although several modeling languages permit the representation of measurement uncertainty for describing certain system attributes, these aspects are not normally incorporated into their type systems. Thus, operating with uncertain values and propagating uncertainty are normally cumbersome processes, di cult to achieve at the model level. This paper proposes an extension of OCL and UML datatypes to incorporate data uncertainty coming from physical measurements or user estimations into the models, along with the set of operations de ned for the values of these types.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

An Ontology-Based Method for Semantic Integration of Business Components

Building new business information systems from reusable components is today an approach widely adopted and used. Using this approach in analysis and design phases presents a great interest and requires the use of a particular class of components called Business Components (BC). Business Components are today developed by several manufacturers and are available in many repositories. However, reusing and integrating them in a new Information System requires detection and resolution of semantic conflicts. Moreover, most of integration and semantic conflict resolution systems rely on ontology alignment methods based on domain ontology. This work is positioned at the intersection of two research areas: Integration of reusable Business Components and alignment of ontologies for semantic conflict resolution. Our contribution concerns both the proposal of a BC integration solution based on ontologies alignment and a method for enriching the domain ontology used as a support for alignment.Comment: IEEE New Technologies of Distributed Systems (NOTERE), 2011 11th Annual International Conference; ISSN: 2162-1896 Print ISBN: 978-1-4577-0729-2 INSPEC Accession Number: 12122775 201

Embedding Requirements within the Model Driven Architecture

The Model Driven Architecture (MDA) brings benefits to software development, among them the potential for connecting software models with the business domain. This paper focuses on the upstream or Computation Independent Model (CIM) phase of the MDA. Our contention is that, whilst there are many models and notations available within the CIM Phase, those that are currently popular and supported by the Object Management Group (OMG), may not be the most useful notations for business analysts nor sufficient to fully support software requirements and specification. Therefore, with specific emphasis on the value of the Business Process Modelling Notation (BPMN) for business analysts, this paper provides an example of a typical CIM approach before describing an approach which incorporates specific requirements techniques. A framework extension to the MDA is then introduced; which embeds requirements and specification within the CIM, thus further enhancing the utility of MDA by providing a more complete method for business analysis

Modeling views in the layered view model for XML using UML

In data engineering, view formalisms are used to provide flexibility to users and user applications by allowing them to extract and elaborate data from the stored data sources. Conversely, since the introduction of Extensible Markup Language (XML), it is fast emerging as the dominant standard for storing, describing, and interchanging data among various web and heterogeneous data sources. In combination with XML Schema, XML provides rich facilities for defining and constraining user-defined data semantics and properties, a feature that is unique to XML. In this context, it is interesting to investigate traditional database features, such as view models and view design techniques for XML. However, traditional view formalisms are strongly coupled to the data language and its syntax, thus it proves to be a difficult task to support views in the case of semi-structured data models. Therefore, in this paper we propose a Layered View Model (LVM) for XML with conceptual and schemata extensions. Here our work is three-fold; first we propose an approach to separate the implementation and conceptual aspects of the views that provides a clear separation of concerns, thus, allowing analysis and design of views to be separated from their implementation. Secondly, we define representations to express and construct these views at the conceptual level. Thirdly, we define a view transformation methodology for XML views in the LVM, which carries out automated transformation to a view schema and a view query expression in an appropriate query language. Also, to validate and apply the LVM concepts, methods and transformations developed, we propose a view-driven application development framework with the flexibility to develop web and database applications for XML, at varying levels of abstraction

AO-WAD: a proposal for accessible design within web engineering approaches

Mature Web Engineering (WE) approaches provide good resources for developing Web 2.0 applications. The state-of-the-art shows that many of these approaches have evolved for providing support to different issues during the development process of these kind of applications, as business-to-business process modeling, context-awareness, RIAs and live-regions or quality factors for improving users’ experience. Focusing on Accessibility, having full support usually means being tightly coupled to host process and models, which prevents conveying this support to other WE approaches. In this paper we introduce our proposal, called Aspect-Oriented Web Accessibility Design (AO-WAD), and generalize its use within WE approaches to provide Accessibility support applying Aspect-Orientation techniques. We embed AO-WAD into OOHDM and UWE methods to propitiate an ease understanding through a motivating example.Eje: Workshop Ingeniería de software (WIS)Red de Universidades con Carreras en Informática (RedUNCI

AO-WAD: a proposal for accessible design within web engineering approaches

Mature Web Engineering (WE) approaches provide good resources for developing Web 2.0 applications. The state-of-the-art shows that many of these approaches have evolved for providing support to different issues during the development process of these kind of applications, as business-to-business process modeling, context-awareness, RIAs and live-regions or quality factors for improving users’ experience. Focusing on Accessibility, having full support usually means being tightly coupled to host process and models, which prevents conveying this support to other WE approaches. In this paper we introduce our proposal, called Aspect-Oriented Web Accessibility Design (AO-WAD), and generalize its use within WE approaches to provide Accessibility support applying Aspect-Orientation techniques. We embed AO-WAD into OOHDM and UWE methods to propitiate an ease understanding through a motivating example.Eje: Workshop Ingeniería de software (WIS)Red de Universidades con Carreras en Informática (RedUNCI