Made available in DSpace on 2014-06-12T15:58:54Z (GMT). No. of bitstreams: 2 arquivo4743_1.pdf: 839765 bytes, checksum: f969ddb9b4402111eed6c09fc6aab6cd (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2003 / Uma das características principais da linguagem HTML, e o que a tornou bastante popular é o fato de ser uma linguagem de hypertexto, ou seja, permite associar, através de links, as informações de uma página a outra página da Web. Porém, apesar do sucesso, o sistema de links da HTML é muito restrito a características bastante simples, o que motivou a criação de uma tecnologia de links mais robusta e inteligente. Esta tecnologia, chamada de XLink, é a linguagem de links associada à linguagem XML, que permite criar links multidirecionais, controlar como e quando os links são ativados, entre outras coisas. Além do XLink, foi desenvolvida também uma linguagem de ponteiros, o XPointer, que provê uma maneira para os localizadores em links XML apontarem para locais específicos dentro dos recursos. Uma vez que o XLink e o XPointer são tecnologias novas, os principais browsers ainda não fornecem um suporte completo a essas linguagens, apesar do XLink já ser uma recomendação da W3C (Órgão que define o padrão para a WWW). Este trabalho tem como objetivo principal implementar uma solução, baseada na especificação de XLink (desenvolvida pela W3C), que auxilie na compreensão do funcionamento dos links em documentos XML, utilizando o browser padrão Internet Explorer. A solução desenvolvida, chamada de IXLink, é um interpretador implementado em JavaScript, que pode ser usado para qualquer tipo de documento XML que contenha XLink. Esse interpretador é capaz de processar a sintaxe do XLink com alguns dos seus respectivos atributos e valores, e parte do XPointer. Simulando dessa forma o funcionamento dos links XML e possibilitando um maior entendimento das especificações. O seu código pode ser facilmente adaptado para a utilização em outras páginas Web, dando assim um suporte aos webdesigners na construção de sites dinâmicos e interativos

Huge amount of data flows around the Internet every second, but for the data to be useful at its destination, it must be presented in a way such that the target has little problem interpreting it. Current data exchange technologies may rearrange the structure of data to suit expectations at the target. However, there may be semantics behind data (e.g. knowing the title of a book can determine its #pages) that may be violated after data translation. These semantics are expressed as integrity constraints (IC) in a database. Currently, there is no guarantee that the exchanged data conforms to the target’s ICs. As a result, existing applications (e.g. user queries) that assume such semantics will no longer function correctly. Current constraint repair techniques deal with data after it has been translated; thus take no consideration of the integrity constraints at the source. Moreover, such constraint repair methods usually involve addition/deletion/modification of data, which may yield incomplete or false data. We consider the constraints of both source and target schemas; together with the mapping, we can efficiently detect which constraint is violated and suggest ways to correct the mappings. / Science, Faculty of / Computer Science, Department of / Graduate

This thesis examines various alternatives of XML technology utilization in the SAS system, particularly in its BI reporting area. It describes methods for importing and processing data stored in XML format. Especially, it is focused on exporting data in the form of XML documents. In the first part, selected XML-based technologies and specifications are described briefly. Next, there is general description of the SAS system and its BI solution. Following, the essential part of the thesis provides detailed analysis of XML processing alternatives and comparison of their suitability for use in different situations according to current requirements. The thesis also considers possible extension of SAS reporting via third-party tools, which can be achieved using XML. In the final chapters, new reporting-related procedures are proposed in order to extend basic SAS facilities, namely for use with MS Office tools. These procedures are then applied on real-world data proving their practical usability.

Ajax is quite new technology in world of web pages creation. In fact, it consits of more programming techniques like Javascript, PHP and XML. The main advantage of this technique is contacting server side on the background. This paper is focused on creating educational application for internet environment. There is written about solution for user’s interface and interface for administration.

Master thesis deals with the issue of the transmission and processing of aeronautical data in AIXM format. The development of the software tool for analysis of AIXM format is described in this thesis. This application parses the AIXM file and shows its content into Treeview component.

Mémoire numérisé par la Direction des bibliothèques de l'Université de Montréal.

No description available.

Updating XML data is very wide area, which must solve a number of difficult problems. From designing language with sufficient expressive power to the XML data repository able to apply the changes. Ways to deal with them are few. From this perspective, is this work very closely dedicated only to the language XQuery. Thus, its extension for updates, for which the candidate recommendation by the W3C were published only recently. Another specialization of this work is to focus only on the XML data stored in the object­relational database with that repository will enforce the validity of documents to the scheme described in XML Schema. This requirement, combined with the possibility of updating of data in the repository is on the contradictory requirements. In this thesis is designed language based on XQuery language, designed and implemented evaluating of the update queries of the language on the store and a description and implementation of the store in object­relational database.

Materialized XML views are a popular technique for integrating data from possibly distributed and heterogeneous data sources. However, the problem of the incremental maintenance of such XML views poses new challenges which to date remain unaddressed. One, XML views not only filter the data, but may radically restructure it to construct new XML nested document structures. Moreover, order is inherent in the XML model, and XML views reflect both the implicit document order of the underlying sources and the order explicitly imposed in the view definition. Therefore, order also has to be preserved at view maintenance time. In this thesis we present an algebraic approach for the incremental maintenance of XQuery views, called VOX (View maintenance for Ordered XML). To the best of our knowledge, this is the first solution to order-preserving XML view maintenance. Our strategy correctly transforms an update to source XML data into sequences of updates that refresh the view. Our technique is based on an algebraic representation of the XQuery view expression using an XML algebra. The XML algebra has ordered bag semantics; hence most of the operators logically are order preserving. We propose an order-encoding mechanism that migrates the XML algebra to (non-ordered) bag semantics, no longer requiring most of the operators to be order-aware. Furthermore, this now allows most of the algebra operators to become distributive over update operations. This transformation brings the problem of maintaining XML views one step closer to the problem of maintaining views in other (unordered) data models. We are thus now able to adopt some of the existing (relational) maintenance techniques towards our goal of efficient order-sensitive XQuery view maintenance. In addition we develop a full set of rules for propagating updates through XML specific operations. We have proven the correctness of the VOX view maintenance approach. A full implementation of VOX on top of RAINBOW, the XML data management system developed at WPI, has been completed. Our experimental results performed using the data and queries provided by the XMark benchmark, confirm that incremental XML view maintenance indeed is significantly faster than complete recomputation in most cases. Incremental maintenance is shown to outperform recomputation even for large updates.

The importance of incorporating time in databases has been well realized by the community and time varying databases have been extensively studied by researchers. The main idea is to model up-to-date changes to data since it became available. Time information is mostly overlaid on the traditional databases, and extensional time dimension helps in inquiring or past data / this all becomes possible only once the idea is realized and favored by commercial database management systems. Unfortunately, one disadvantage of the temporal database management system is that it has not been commercialized. Firstly XML ,eXtensible Markup Language, is a defacto standard for data interchange and hence integrating XML as the data model is decided. The motivation for the work described in this thesis is two-fold / transferring databases into XML with changing crisp values into fuzzy variables describing fuzzy sets and second bitemporal databases form one interesting type of temporal databases. Thus, purpose is to suggest a complete automated system that converts any bitemporal database to its fuzzy XML schema definition. However, the implemented temporal database operators are database content independent. Fuzzy elements are capable of having different membership functions and varying number of linguistic variables. A scheme for determining membership function parameters is proposed. Finally, fuzzy queries have also been implemented as part of the system.