UN/CEFACT’S Modeling Methodology (UMM): A UML Profile for B2B e-Commerce
The United Nation’s Centre for Trade Facilitation and Electronic Business (UN/CEFACT) is an e-business standardization body. It is known...
Using Unified Modeling Language for Conceptual Modelling of Knowledge-Based Systems
This paper discusses extending the Unified Modelling Language by means of a profile for modelling knowledge-based system in the...
Capturing Security Requirements in Business Processes Through a UML 2.0 Activity Diagrams Profile
Security has become a crucial aspect for the performance of present organizations since the protected object is the mission...
From Declarative to Imperative UML/OCL Operation Specifications
An information system maintains a representation of the state of the domain in its Information Base (IB). The state...
An Ontological Metamodel of Classifiers and Its Application to Conceptual Modelling and Database Design
Classification is a key concept in conceptual modeling. However, the recognition that there might be different kinds of classes...
Handling Inconsistency of Vague Relations with Functional Dependencies
Vague information is common in many database applications due to internet-scale data dissemination, such as those data arising from...
Querying Incomplete Data with Logic Programs: ER Strikes Back
Since Chen’s Entity-Relationship (ER) model, conceptual modelling has been playing a fundamental role in relational data design. In this...
Prioritized Preferences and Choice Constraints
It is increasingly recognised that user preferences should be addressed in many advanced database applications, such as adaptive searching...
Reasoning over Extended ER Models
We investigate the computational complexity of reasoning over various fragments of the Extended Entity-Relationship (EER) language, which includes a...
On Order Dependencies for the Semantic Web
We consider the problem of adding both equality and order generating dependencies to Web ontology languages such as OWL...
