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Searching for authors named "Stelios Paparizos" – sorted by Relevance.

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  • Pattern Tree Algebras: Sets Or Sequences?  
  • by Stelios Paparizos Jagadish — 2005
  • …XML and XQuery semantics are very sensitive to the order of the produced output. Although pattern-tree based algebraic approaches are becoming more and more popular for evaluating XML, there is no universally accepted technique which can guarantee both a correct output order and a choice of ef…
  • Cited by 12 (1 self) – Add To MetaCart
  • Tree Logical Classes for Efficient Evaluation of XQuery  
  • by Stelios Paparizos, Laks V. S. Lakshmanan — 2004 — In SIGMOD
  • …XML is widely praised for its flexibility in allowing repeated and missing sub-elements. However, this flexibility makes it challenging to develop a bulk algebra, which typically manipulates sets of objects with identical structure. A set of XML elements, say of type book, may have members that vary…
  • Cited by 25 (2 self) – Add To MetaCart
  • A Physical Algebra for XML  
  • by Stelios Paparizos, Shurug Al-Khalifa, H. V. Jagadish, Andrew Nierman, Yuqing Wu — 2002
  • …We present a physical algebra for the manipulation of XML in a database. We show how to map logical algebra operators to this physical algebra. We also present several physical algebra identities that are useful for query optimization.…
  • Cited by 1 (0 self) – Add To MetaCart
  • Grouping in XML  
  • by Stelios Paparizos Shurug, Stelios Paparizos, Shurug Al-khalifa, H. V. Jagadish, Laks Lakshmanan, Andrew Nierman, Divesh Srivastava, Yuqing Wu — 2002
  • …XML permits repeated and missing sub-elements, and missing attributes. We discuss the consequent implications on grouping, both with respect to specification and with respect to implementation. The techniques described here have been implemented in the TIMBER native XML database system being dev…
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  • TIMBER: A native system for querying XML  
  • by Stelios Paparizos Shurug, Stelios Paparizos, Shurug Al-khalifa, Adriane Chapman, Jignesh M. Patel, Divesh Srivastava, Nuwee Wiwatwattana, Yuqing Wu, Cong Yu — 2003 — In SIGMOD
  • …XML has become ubiquitous, and XML data has to be managed in databases. The current industry standard is to map XML data into relational tables and store this information in a relational database. Such mappings create both expressive power problems and performance problems.…
  • Cited by 1 (0 self) – Add To MetaCart
  • unknown title  
  • by Grouping Xml, Stelios Paparizos, Shurug Al-khalifa, H. V. Jagadish, Laks Lakshmanan, Andrew Nierman, Divesh Srivastava, Yuqing Wu
  • …Abstract. XML permits repeated and missing sub-elements, and missing attributes. We discuss the consequent implications on grouping, both with respect to specification and with respect to implementation. The techniques described here have been implemented in the TIMBER native XML database system bei…
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  • Persistent Applications via Automatic Recovery  
  • by Roger Barga David, David Lomet, Stelios Paparizos, Haifeng Yu, Sirish Ch — 2002 — In IDEAS
  • …Building highly available enterprise applications using web-oriented middleware is hard. Runtime implementations frequently do not address the problems of application state persistence and fault-tolerance, placing the burden of managing session state and, in particular, handling system failures…
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  • Grouping in XML  
  • by Stelios Paparizos, Shurug Al-Khalifa, H. V. Jagadish, Laks Lakshmanan, Andrew Nierman, Divesh Srivastava, Yuqing Wu — 2002 — In EDBT ’02: Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
  • …XML permits repeated and missing sub-elements, and missing attributes. We discuss the consequent implications on grouping, both with respect to specification and with respect to implementation. The techniques described here have been implemented in the TIMBER native XML database system being develop…
  • Cited by 2 (0 self) – Add To MetaCart
  • TIMBER: A native system for querying XML  
  • by Stelios Paparizos, Shurug Al-Khalifa, Adriane Chapman, H. V. Jagadish, Laks V. S. Lakshmanan, Adrew Nierman, Jignesh M. Patel, Divesh Srivastava, Nuwee Wiwatwattana, Yuqing Wu, Cong Yu — 2003 — In SIGMOD
  • …XML has become ubiquitous, and XML data has to be managed in databases. The current industry standard is to map XML data into relational tables and store this information in a relational database. Such mappings create both expressive power problems and performance problems.…
  • Cited by 8 (0 self) – Add To MetaCart
  • TIMBER: A Native XML Database  
  • by H. V. Jagadish, Shurug Al-Khalifa, Adriane Chapman, Laks V. S. Lakshmanan, Andrew Nierman, Stelios Paparizos, Jignesh M. Patel, Divesh Srivastava, Nuwee, Nuwee Wiwatwattana, Yuqing Wu, Cong Yu — 2002 — The VLDB Journal
  • …This paper describes the overall design and architecture of the Timber XML database system currently being implemented at the University of Michigan. The system is based upon a bulk algebra for manipulating trees, and natively stores XML. New access methods have been developed to evaluate queries in…
  • Cited by 98 (9 self) – Add To MetaCart
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