A schema mapping is a specification that describes how data from a source schema is to be mapped to a target schema. Schema mappings have proved to be essential for data-interoperability tasks such as data exchange and data integration. The research on this area has mainly focused on performing these tasks. However, as Bernstein pointed out [7], many information-system problems involve not only...

The timing schemas proposed in various approaches for Worst Case Execution Time (WCET) estimation lack the ability of handling more path-based low level analysis and non-structured code. As it is extremely efficient in the computational stage, we propose a technique to handle these cases, while still retaining most of the efficiency of the syntax tree timing schema. This is achieved by changing...

We consider the problem of XML schema evolution preserving the validity of existing documents related to the original schema. The aim of such schema evolution is to fit new needs without revalidating all existing valid XML documents. We propose an approach to assist users to specify schema updates that have no impact on existing document validity. An XML schema is modeled as a set of regular ex...

need, semantic annotation may be applied to describe the operations provided by Markup Language (XML), Semantic Annotation for WSDL and XML Schema.

The Canto hypertext data model is characterized by a hierarchical schema mechanism that allows a predetermined, open-ended schema to be embedded in the hyperdocument. Canto uses two types of nodes: concept nodes, which provide organizational structure, and information nodes, which contain text and other data. The operations provided by the Canto Data Model are defined formally using the Z speci...

The increasing number of XML repositories has provided the impetus to design and develop systems that can store and query XML data efficiently. Non-native XML method could not adequately be customized to support XML, native XML database will be more efficient. Most of existed XML database systems claimed that their systems are schemaindependent. But we argue that schema plays an important role ...

Sexual self-schemas are cognitive generalizations about sexual aspects of oneself. In Part 1, a measure of men's sexual self-schema is developed. Studies of test-retest and internal consistency reliability and validity studies of factor analysis, internal structure, convergent and discriminant validity, process, group difference, and change are provided. The construct consists of 3 dimensions: ...

Developing a standard schema at the abstract syntax tree level for C/C++ to be used by reverse engineering and reengineering tools is a complex and difficult problem. In this paper, we present a catalogue of issues that need to be considered in order to design a solution. Three categories of issues are discussed. Lexical structure is the first category and pertains to characteristics of the sou...

In this work we extend the commonly used binary evaluation of schema matching to support evaluation methods for non-binary matching results as well. We motivate our work with some new applications of schema matching. Non-binary evaluation is formally defined together with a set of three new, non-binary evaluation measures using a vector-space representation of schema matching outcome. We provid...

New XML schema languages have been recently proposed to replace Document Type Definitions (DTDs) as schema mechanism for XML data. These languages consistently combine grammar-based constructions with constraintand pattern-based ones and have a better expressive power than DTDs. As schema remain optional for XML data, we address the problem of schema extraction from XML data. We model the XML s...