The relational model and its extensions are often considered incompatible with object-orientation. However, on the one hand nested relations provide the complex object features demanded by object models. Particularly, powerful query languages exploit the complex data structure while keeping the advantages of the declarative, set-oriented paradigm. On the other hand, object models provide semant...

conclusions according to the findings of this study, gid patients who have been operated are more secure in attachment styles than those who have not been operated, and there is a significant correlation between age, education and gender with attachment style among these individuals. results findings showed that the highest frequency (71%) in terms of secure attachment and the lowest frequency ...

Shadows is a simple, but flexible, architecture based upon only three key concepts: object servers, object migration and location-transparent operation invocation. We show how several powerful object properties such as object caching, object shareability, and persistence can easily be created by exploiting only these three concepts. The Shadows architecture requires only capabilities found in c...

This paper presents two consecutive constraint representation and processing systems for artificial intelligence applications. The main aim of the two systems is to provide powerful knowledge representation facilities in the form of constraints. The facilities taken into account include generic constraints, parameterization, hierarchization, a specialized language for declaring the functionalit...

On-Line Analytical Processing (OLAP) systems provide good performance and ease-of-use when retrieving summary information from very large amounts of data. However, the complex structures and relationships inherent in related non-summary data are not handled well by OLAP systems. In contrast, object database systems are built to handle such complexity, but do not support summary querying well. T...

Nowadays the complexity of computing systems is skyrocketing. Programmers have to deal with extremely powerful computing systems that take time and considerable skills to be instructed to perform at their best. This work analyzes the stated problem and proposes a simple, yet powerful mechanism for optimizing performance through the coordination of the interaction of multiple, independent adapti...

Cooperative arms are two or more arms in series which assume the structure of a parallel robot on account of gripping an intermediary object, and are commonly used in accurate assembly industries, coaxialization, movement of object, etc. Gripping an intermediary object is one of the complicated subjects in analysis of cooperative arms, whose analysis is mostly dependent upon the manner the obje...

This paper is an overview of a three years effort aimed at providing a flexible and powerful model for design applications. The result is a data model called SHOOD based on object-oriented concepts and frame-based knowledge representation. SHOOD implements sophisticated features, such as : • object persistence, • multi-methods along a specific specialization hierarchy, which is independent of t...