Oscar Pastor

Advanced Information Systems Engineering

The traditional role of an Information System (IS) is to support operation and management within an organization. In the presentation, we will discuss the specific role that IS can also play to support the management aspects related to the governance of an organization regarding its compliance to norms and regulations. In the new service economy, governance issues are no longer limited to a single organization but should be extended at the level of service value networks, i.e. service systems. In such systems, one of the challenges is for each organization to demonstrate its compliance in a transparent way. In this paper, we discuss how to organize a global governance framework and we illustrate its use in the IT service management. On the basis of some research on TIPA, a process reference model making possible to objectively measure the quality of delivered IT services, we illustrate how IS and Enterprise Architecture can effectively support the deployment of such global governance model.

Conceptual modeling of device-independent Web applications

Existing tools for building and deploying complex Web sites are inadequate for dealing with the software production process that involves connecting with underlying logic in a unified and systematic way. As a solution, we propose the OO-H method, an object-oriented software approach that captures relevant properties involved in modeling and implementing Web application interfaces.

The OO-Method approach for information systems modeling: from object-oriented conceptual modeling to automated programming

Abstract Current and future (conventional) notations used in Conceptual Modeling Techniques should have a precise (formal) semantics to provide a well-defined software development process, in order to go from specification to implementation in an automated way. To achieve this objective, the OO-method approach to Information Systems Modeling presented in this paper attempts to overcome the conventional (informal)/formal dichotomy by selecting the best ideas from both approaches. The OO-method makes a clear distinction between the problem space (centered on what the system is) and the solution space (centered on how it is implemented as a software product). It provides a precise, conventional graphical notation to obtain a system description at the problem space level, however this notation is strictly based on a formal OO specification language that determines the conceptual modeling constructs needed to obtain the system specification. An abstract execution model determines how to obtain the software representations corresponding to these conceptual modeling constructs. In this way, the final software product can be obtained in an automated way.

Conceptual Modeling – ER 2005

Specific Approaches.- Conceptual Modeling of Structure and Behavior with UML - The Top Level Object-Oriented Framework (TLOOF) Approach.- How to Manage Uniformly Software Architecture at Different Abstraction Levels.- Schema Integration Based on Uncertain Semantic Mappings.- Process Modeling and Views.- Combining Intention-Oriented and State-Based Process Modeling.- Pattern-Based Analysis of the Control-Flow Perspective of UML Activity Diagrams.- A Three-Layered XML View Model: A Practical Approach.- Conceptual Modeling in eLearning.- Modeling Group-Based Education.- Learning Process Models as Mediators Between Didactical Practice and Web Support.- Managing Models and Modeling.- A Fundamental View on the Process of Conceptual Modeling.- How to Tame a Very Large ER Diagram (Using Link Analysis and Force-Directed Drawing Algorithms).- A Multilevel Dictionary for Model Management.- A MOF-Compliant Approach to Software Quality Modeling.- Requirements and Software Engineering.- Conceptual Modeling Based on Transformation Linguistic Patterns.- Applying Modular Method Engineering to Validate and Extend the RESCUE Requirements Process.- Security Patterns Meet Agent Oriented Software Engineering: A Complementary Solution for Developing Secure Information Systems.- Ontologies.- Kuaba Ontology: Design Rationale Representation and Reuse in Model-Based Designs.- Ontology Creation: Extraction of Domain Knowledge from Web Documents.- Choosing Appropriate Method Guidelines for Web-Ontology Building.- Web Services and Navigational Models.- Conceptual Model Based Semantic Web Services.- Automatically Grounding Semantically-Enriched Conceptual Models to Concrete Web Services.- Transforming Web Requirements into Navigational Models: AN MDA Based Approach.- Aspects of Workflow Modeling.- Accelerating Workflows with Fixed Date Constraints.- Workflow Data Patterns: Identification, Representation and Tool Support.- Actor-Oriented Design of Scientific Workflows.- Blueprints and Measures for ETL Workflows.- Queries and OLAP Summaries.- Vague Sets or Intuitionistic Fuzzy Sets for Handling Vague Data: Which One Is Better?.- A Semantic Approach to Query Rewriting for Integrated XML Data.- A Taxonomy of Inaccurate Summaries and Their Management in OLAP Systems.- Temporal and Spatial Modeling.- XCM: Conceptual Modeling for Dynamic Domains.- Precise Modeling and Verification of Topological Integrity Constraints in Spatial Databases: From an Expressive Power Study to Code Generation Principles.- Topological Relationships Between Complex Lines and Complex Regions.

Requirements Engineering-Based Conceptual Modelling

The software production process involves a set of phases where a clear relationship and smooth transitions between them should be introduced. In this paper, a requirements engineering-based conceptual modelling approach is introduced as a way to improve the quality of the software production process. The aim of this approach is to provide a set of techniques and methods to capture software requirements and to provide a way to move from requirements to a conceptual schema in a traceable way. The approach combines a framework for requirements engineering (TRADE) and a graphical object-oriented method for conceptual modelling and code generation (OO-Method). The intended improvement of the software production process is accomplished by providing a precise methodological guidance to go from the user requirements (represented through the use of the appropriate TRADE techniques) to the conceptual schema that properly represents them (according to the conceptual constructs provided by the OO-Method). Additionally, as the OO-Method provides full model-based code generation features, this combination minimises the time dedicated to obtaining the final software product.

Development of Web Applications from Web Enhanced Conceptual Schemas

This work presents an OO software production method that defines a systematic process for conceptual modelling of web applications. The paper discusses a set of minimum primitives to capture the essentials of dynamic web applications and it discusses how to introduce them in a classical model-centered OO method that provides systematic code generation. Finally, the paper presents some ideas to extend this generation process for developing web solutions taking as an input these web enhanced conceptual schemas.

JUST-UI: A User Interface Specification Model

A Model for the Specification of Abstract User Interfaces based on Conceptual Patterns is proposed to enhance the semantic captured by an object-oriented analysis method. The model gathers both Presentation and Navigation issues. A graphical notation is also provided to make easier the specification tasks. This simple graphical notation allows that a non analyst can understand and participate in the specification process.

A systematic mapping study on empirical evaluation of software requirements specifications techniques

This paper describes an empirical mapping study, which was designed to identify what aspects of Software Requirement Specifications (SRS) are empirically evaluated, in which context, and by using which research method. On the basis of 46 identified and categorized primary studies, we found that understandability is the most commonly evaluated aspect of SRS, experiments are the most commonly used research method, and the academic environment is where most empirical evaluation takes place.

A functional size measurement method for object-oriented conceptual schemas: design and evaluation issues

Functional Size Measurement (FSM) methods are intended to measure the size of software by quantifying the functional user requirements of the software. The capability to accurately quantify the size of software in an early stage of the development lifecycle is critical to software project managers for evaluating risks, developing project estimates and having early project indicators. In this paper, we present OO-Method Function Points (OOmFP), which is a new FSM method for object-oriented systems that is based on measuring conceptual schemas. OOmFP is presented following the steps of a process model for software measurement. Using this process model, we present the design of the measurement method, its application in a case study, and the analysis of different evaluation types that can be carried out to validate the method and to verify its application and results.

An Object-Oriented Approach to Automate Web Applications Development

This paper presents the Object-OrientedWeb-Solutions Modeling approach (OOWS), which provides mechanisms to deal with the development of hypermedia information systems and e-commerce applications in web environments. It is proposed as an extension of an object-oriented method for automatic code generation based on conceptual models (OO-Method). The main contribution of this work is the introduction of a navigational model that is completely embedded in the process of conceptual modeling, to specify navigational features as a main part of what is conventionally specified during the conceptual modeling process. This navigational model provides abstraction primitives that allow to capture and represent navigational semantics in a precise way. We show how to put into practice the OOWS approach through a successful practical example developed within the context of e-commerce applications.