An Analysis of the Current Development Stage of the eXtensible Markup Language and its Usage for Database Systems

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MA-Thesis / Master, die am 29.08.2002 erfolgreich an einer Universität in Großbritannien eingereicht wurde. Abstract: The eXtensible Markup Language (XML) is receiving a great deal of attention from computing and Internet communities. This is mainly because of its ability to reduce obstacles in sharing data among diverse applications and databases by providing a common format for expressing data structure and content. The scope of this project is to investigate the current stage of XML and its usage for database systems. In order to understand the XML database technology a general introduction to both database systems and XML is provided to the reader in chapter two and three. Chapter four and five deal with the methodology and findings of this project. These chapters rely on articles, case studies and surveys which are examined and evaluated. Finally, a conclusion and review chapter is included. The analysis of the current adoption of XML among software developers revealed that in Spring 2001 more than one third of international developers already used XML. In 2001 they spent about 5.4% of their development time using XML. For 2002 it is predicted that they will spend an average of 9% of their development time using XML. Concerning XML databases there are currently two major XML related database types available. These are native XML and XML enabled relational databases. Native XML databases are constructed to use the recommended XML standards to the most possible extent. Thereby, the XML document is the fundamental unit of storage. XML enabled relational databases are relational databases equipped with an additional layer to map XML content in to the relational tables. XML documents are only used as a means of transport between the database systems. Native XML databases are better suited for dealing with document structured content whilst XML enabled relational databases are more appropriate to handle data structured content such as numbers and piece…

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XML im Database Publishing: Anspruch und Wirklichkeit

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Diplomarbeit, die am 02.01.2001 erfolgreich an einer Fachhochschule in Deutschland im Fachbereich Betriebswirtschaft eingereicht wurde. Problemstellung: Steigender Wettbewerb, verstärkter Kostendruck, neue Vetriebswege und erweiterte Möglichkeiten durch Technologien wie das Internet haben in den letzten Jahren für enorme Veränderungen im Bereich der Printproduktion gesorgt. Die Unternehmen sehen sich ständig neuen Situationen und Herausforderungen gegenübergestellt, die sie möglichst schnell und effektiv bewältigen müssen. Verlagshäuser suchen deshalb nach neuen Wegen, ihre Produkte immer günstiger und schneller herzustellen und dabei ihre Daten für verschiedene Ausgabemedien (z.B. Buch, Internet oder CD-ROM) wiederverwertbar zu machen. Zwei häufig in diesem Zusammenhang genannte Schlagworte sind XML (eXtensible Markup Language) und Database Publishing. Mit der Kombination dieser beiden Techniken erhoffen sich viele eine Revolution im Verlags- und Druckwesen. Gang der Untersuchung: Ziel der Arbeit ist es, Ansprüche, Bedingungen und Voraussetzungen, die das Database Publishing in Bezug auf den Einsatz von XML verlangt, objektiv aufzuzeigen und im Gegensatz dazu eine realistische Beurteilung abzugeben, inwieweit dies in der Praxis umsetzbar ist. Um ein Grundverständnis für das Thema zu erhalten, erfolgt in Kapitel 2 zunächst eine allgemeine Einführung in die Thematik der Auszeichnungssprachen, der zugrundeliegenden Konzepte sowie des Basiswissens zu XML. Anschließend wird in Kapitel 3 ein Überblick über das Database Publishing und dessen Konzepte gegeben. Danach werden in Kapitel 4 die Anforderungen des Database Publishing festgelegt. Kapitel 5 stellt die Verbindung zwischen XML und DBP her. Die Möglichkeiten und noch bestehenden Grenzen von XML im DBP werden aufgezeigt. Den Schluss bildet Kapitel 6 mit einer Aufstellung aktueller Softwarelösungen auf dem Markt. Inhaltsverzeichnis: |ABBILDUNGSVERZEICHNIS|IV 1.|Einführung|1 1.1|Ausgangssituation und.

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Efficient XML Updates- Index-Aware Updates for a Native XML Database System

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With the rapidly evolving XML technology and thereby ever-increasing number of XML documents, the importance of providing efficient tools for managing these enormous amounts of data is rising every day. Native XML database systems are such tools. Like other XML database systems they need indices in order to provide efficient and fast access to the data. These indices represent redundant data structures in the database and therefore have to be kept consistent, whenever the underlying base data is manipulated. Updating fragments of an XML document with automated, transparent, and efficient index maintenance is the central theme of this book. Author Harald Burger first analyses the two most prominent existing proposals for XML updates, namely the W3C’s proposed extension of XQuery with operations for data manipulation and XUpdate. He then introduces an efficient and simple way to keep the indices in an XML DBMS consistent: the Simple Update API for the native XML database management system Infonyte DB. This book is addressed to professionals involved in XML and database development. It is also directed towards researchers in the XML area and beginning graduate or advanced undergraduate students of computer science.

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Database and XML Technologies: Third International XML Database Symposium, XSym 2005, Trondheim, Norway, August 28-29, 2005, Proceedings

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This book constitutes the refereed proceedings of the Third International XML Database Symposium, XSym 2005, held in Trondheim, Norway in August 2005 in conjunction with VLDB 2005 and in coordination with the Database and Programming Languages Symposium, DBPL 2005.

The 15 revised full papers were carefully reviewed and are preluded by a joint XSym-DBPL keynote talk. The papers are organized in topical sections on indexing support for the evaluation of XPath and XQuery; benchmarks and algorithms for XQuery and XPath evaluation; algorithms for constraint satisfaction checking, information extraction, and subtree matching; and applications of XML in information systems.

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Database and XML Technologies: First International XML Database Symposium, XSYM 2003, Berlin, Germany, September 8, 2003, Proceedings

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This book constitutes the refereed proceedings of the First International XML Database Symposium, XSym 2003, held in Berlin, Germany in September 2003. The 18 revised full papers presented were carefully reviewed and selected from 65 submissions. The papers are organized in topical sections on XML-relational database management systems, XML query processing, systems and tools for XML data processing, XML access structures, stream processing and updates, and design issues.

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