1,276 research outputs found

    Database independent Migration of Objects into an Object-Relational Database

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    This paper reports on the CERN-based WISDOM project which is studying the serialisation and deserialisation of data to/from an object database (objectivity) and ORACLE 9i.Comment: 26 pages, 18 figures; CMS CERN Conference Report cr02_01

    GraXML - Modular Geometric Modeler

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    Many entities managed by HEP Software Frameworks represent spatial (3-dimensional) real objects. Effective definition, manipulation and visualization of such objects is an indispensable functionality. GraXML is a modular Geometric Modeling toolkit capable of processing geometric data of various kinds (detector geometry, event geometry) from different sources and delivering them in ways suitable for further use. Geometric data are first modeled in one of the Generic Models. Those Models are then used to populate powerful Geometric Model based on the Java3D technology. While Java3D has been originally created just to provide visualization of 3D objects, its light weight and high functionality allow an effective reuse as a general geometric component. This is possible also thanks to a large overlap between graphical and general geometric functionality and modular design of Java3D itself. Its graphical functionalities also allow a natural visualization of all manipulated elements. All these techniques have been developed primarily (or only) for the Java environment. It is, however, possible to interface them transparently to Frameworks built in other languages, like for example C++. The GraXML toolkit has been tested with data from several sources, as for example ATLAS and ALICE detector description and ATLAS event data. Prototypes for other sources, like Geometry Description Markup Language (GDML) exist too and interface to any other source is easy to add.Comment: Talk from the 2003 Computing in High Energy and Nuclear Physics (CHEP03), La Jolla, Ca, USA, March 2003. PSN THJT00

    Research on Elaboration of an Integrated System Based on Xml Data Analysis

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    This paper approach the importance of XML for organizing and managing better the data based on texts. This document provides the specification for a data model for describing information organization structures (metadata) for collections of networked information. As an important result we propose a new model of an integrated system based on XML and using the data analysis It also provides some steps we must follow for this data model using XML, the Extensible Markup LanguageXML, Integrated System, Database

    A Scalable Approach to Processing Large XML Data Volumes

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    Language Integrated Query in Java for XML and Relational Database

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    XML and relational databases are the most commonly used data-sources for numerous Java-based enterprise applications. The ever-growing dependence of Java-based applications on these technologies calls for developing a uniform means of querying these data-sources in the Java layer such that queries written for any of these technologies look similar and are in fact governed by a single grammar. This thesis implements a new backend system encapsulating querying capabilities over XML and JDBC based relational databases which would complement the translation of queries written using QuEL [1], a language extension to the Java programming language. The QuEL language extension to Java is part of another thesis developed previously and acts as the query language for the back-end implemented in this thesis for XML and relational databases. The benefits of this approach include faster development time and a flat learning curve towards a single query language for various data sources

    BSML: A Binding Schema Markup Language for Data Interchange in Problem Solving Environments (PSEs)

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    We describe a binding schema markup language (BSML) for describing data interchange between scientific codes. Such a facility is an important constituent of scientific problem solving environments (PSEs). BSML is designed to integrate with a PSE or application composition system that views model specification and execution as a problem of managing semistructured data. The data interchange problem is addressed by three techniques for processing semistructured data: validation, binding, and conversion. We present BSML and describe its application to a PSE for wireless communications system design

    Storing XML Documents in Databases

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    The authors introduce concepts for loading large amounts of XML documents into databases where the documents are stored and maintained. The goal is to make XML databases as unobtrusive in multi-tier systems as possible and at the same time provide as many services defined by the XML standards as possible. The ubiquity of XML has sparked great interest in deploying concepts known from Relational Database Management Systems such as declarative query languages, transactions, indexes and integrity constraints. This chapter presents now bulkloading is done in Monet XML, a main memory XML database system, and evaluates the cost of bulkloading and bulk deletion with respect to strategies which base on insertion and deletion of individual nodes. Additionally, we survey the applicability of the techniques to a wider class of XML storage schemas
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