Matthias Brantner, Daniela Florescu, David Graf, Donald Kossmann, Tim Kraska
There has been a great deal of hype about Amazon’s simple storage service (S3). S3 provides infinite scalability and high availability at low cost. Currently, S3 is used mostly to store multi-media...
Skew handling in the DBS3 Parallel Database System * (2008)
Luc Bouganim, Daniela Florescu, Benoît Dageville
Abstract: The gains of parallel query execution can be limited because of high start-up time, interference between execution entities, and poor load balancing. In this paper, we present a solution...
Abstract Dynamic Load Balancing in Hierarchical Parallel Database Systems (2008)
Luc Bouganim, Daniela Florescu
We consider the execution of multi-join queries in a hierarchical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, the problem of load...
Abstract Dynamic Load Balancing in Hierarchical Parallel Database Systems* (2008)
Luc Bouganim, Daniela Florescu, Patrick Valduriez, Bull Inria Inria
We consider the execution of multi-join queries in a hierar-chical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, the problem of load...
Abstract An Adaptive Query Execution System for Data Integration* (2008)
Zachary G. Ives, Daniela Florescu, Alon Levy
Query processing in data integration occurs over network-bound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three reasons: there is an...
STRUDEL: A Web-site Management System (2008)
Mary Fern, Daniela Florescu, Jaewoo Kang, Alon Levy, Dan Suciu
ABSTRACT Extending XQuery with Window Functions (2008)
Irina Botan, Peter M. Fischer, Daniela Florescu, Donald Kossmann, Tim Kraska, Rokas Tamosevicius
This paper presents two extensions for XQuery. The first extension allows the definition and processing of different kinds of windows over an input sequence; i.e., tumbling, sliding, and landmark...
myjournal manuscript No. (will be inserted by the editor) The BEA Streaming XQuery Processor (2008)
Daniela Florescu, Chris Hillery, Donald Kossmann, Paul Lucas, Fabio Riccardi, Till Westmann, ...
Abstract This paper describes the design, implementation, and performance characteristics of a commercial XQuery processing engine, the BEA streaming XQuery processor. This XQuery engine was designed...
> 1991: CERN releases the World Wide Web (2008)
Daniela Florescu, Jérôme Siméon, Graphlog [univ Toronto, O Extensions [inria, D. Florescu, J. Siméon, ...
Need to handle irregular Web data.
Relational Database, Daniela Florescu, Donald Kossmann, Daniela Florescu, Donald Kossmann
images, donne'es, connaissances Projet Rodin Rapport de recherche n*????-- Mai 1999-- 31 pages
An Extensible Framework for Data Cleaning Abstract (2008)
Inria Rocquencourt, Daniela Florescu, Inria Rocquencourt, Dennis Shashaz, Eric Simon
We propose an extensible data cleaning tool, named AJAX, that supports the specification and efficient execution of complex data cleaning programs. Data quality concerns arise when one wants to...
Answering XML Queries over Heterogeneous Data Sources (2008)
Ioana Manolescu Inria, Daniela Florescu
Abstract This work describes an architecture for integrating heterogeneous data sources under an XML global schema, following the local-as-view approach (local sources ' schemas are described as...
The Claremont report on database research (2008)
Agrawal, Rakesh, Ailamaki, Anastasia, Bernstein, Philip A., Brewer, Eric A., Carey, Michael J., Chaudhuri, Surajit, ...
Daniela Florescu, Alon Levy, Dan Suciu
Abstract Strudel is a system for implementing data-intensive Web sites, which typically integrate information from multiple data sources and have complex structure. Strudel's key idea is...
Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu
The World-Wide Web (WWW) has become a prime vehicle for disseminating information. As a result, the number of large Web sites with complex structure and that serve information derived from multiple...
June Vol No, Adaptive Query, Processing Technology, Evolution Joseph, M. Hellerstein, Michael J. Franklin, ...
As query engines are scaled and federated, they must cope with highly unpredictable and changeable environments. In the Telegraph project, we are attempting to architect and implement a continuously...
Bulletin of the Technical Committee on (2007)
June Vol No, Sirish Ch, Amol Deshp, Kris Hildrum, Sam Madden, Vijayshankar Raman, ...
As query engines are scaled and federated, they must cope with highly unpredictable and changeable environments. In the Telegraph project, we are attempting to architect and implement a continuously...
Warehousing and Incremental Evaluation for Web Site Management (2007)
Mary Fern'andez, Daniela Florescu, Inria Roquencourt, Alon Levy, Dan Suciu
Recently, several systems have been proposed for building Web sites from declarative specifications. The salient feature of these systems is that they model both the structure and the content of a...
September Vol No, Manipulating Xml, Data Sudarshan, S. Chawathe, Querying Xml, Data Alin Deutsch, ...
This paper presents a brief overview of data management using the Extensible Markup Language (XML). It presents the basics of XML and the DTDs used to constrain XML data, and describes metadata...
Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu
The World-Wide Web (WWW) has become a prime vehicle for disseminating information. As a result, the number of large Web sites with complex structure and that serve information derived from multiple...
Ioana Manolescu, Daniela Florescu, Donald Kossmann
This work describes an architecture for integrating heterogeneous data sources under an XML global schema, following the local-as-view approach (local sources ' schemas are described as views...
Thme 3 Interaction homme-machine, images, donnes, connaissances (2007)
Ioana Manolescu, Ioana Manolescu, Daniela Florescu, Daniela Florescu, Donald Kossmann, ...
apport de recherche
Manipulating Xml, Data Sudarshan, S. Chawathe, Querying Xml, Data Alin Deutsch, Mary Fern, ...
Letter from the Editor-in-Chief Repeat of Prior ICDE'2000 Announcement As many of you perhaps are aware, the deadline for the ICDE'2000 conference, which is the flagship conference of our...
Daniela Florescu, Andreas Grünhagen, Donald Kossmann
We present an XML programming language specially designed for the implementation of Web services. XL is portable and fully compliant with all W3C standards such as XQuery, XML Protocol, and XML...
XQueryP: Programming with XQuery (2006)
Don Chamberlin, Michael Carey, Daniela Florescu, Donald Kossmann, Jonathan Robie
XQuery is a declarative language for querying and updating XML data sources. Interfacing XQuery to a host programming language is difficult because of the type system mismatch, and global...
Implementing memoization in a streaming xquery processor (2004)
Yanlei Diao, Daniela Florescu, Donald Kossmann, Michael J. Carey, Michael J. Franklin
Abstract. In this paper, we describe an approach to boosting the performance of an XQuery engine by identifying and exploiting opportunities to share processing both within and across XML queries. We...
XL: A Platform for Web Services (2003)
Daniela Florescu, Andreas Grünhagen, Donald Kossmann
This papers presents XL, a new platform for Web services. We have designed XL with three main goals in mind: (a) increase application developers productivity via high-level programming constructs for...
The bea/xqrl streaming xquery processor (2003)
Daniela Florescu, Chris Hillery, Donald Kossmann, Paul Lucas, Fabio Riccardi, Till Westmann, ...
In this paper, we describe the design, implementation, and performance characteristics of a complete, industrial-strength XQuery engine, the BEA streaming XQuery processor. The engine was designed to...
XL: A Platform for Web Services (2003)
Daniela Florescu, Andreas Grünhagen, Donald Kossmann, Steffen Rost, Tu München, Tu München
We present a platform for Web services. Web services are implemented in a special XML programming language 1 called XL [1, 2]. A Web service receives an XML message as input and returns an XML...
The BEA/XQRL Streaming XQuery Processor (2003)
Daniela Florescu, Chris Hillery, Donald Kossmann, Paul Lucas, Fabio Riccardi, Till Westmann, ...
In this paper, we describe the design, implementation, and performance characteristics of a complete, industrial-strength XQuery engine, the BEA streaming XQuery processor. The engine was designed to...
XL: An XML Programming Language for Web Service Specification and Composition (2002)
Florescu, Daniela, Grnhagen, Andreas, Kossmann, Donald
We present an XML programming language specially designed for the implementation of Web services. XL is portable and fully compliant with W3C standards such as XQuery, XML Protocol, and XML Schema....
XL: An XML programming language for web service specification and composition (2002)
Daniela Florescu, Andreas Grünhagen, Donald Kossmann
We present an XML programming language designed for the implementation of Web services. XL is portable and fully compliant with W3C standards such as XQuery, XML Protocol, and XML Schema. One of the...
Declarative Data Cleaning : Language, Model, and Algorithms (2001)
Galhardas, Helena, Florescu, Daniela, Shasha, Dennis, Simon, Eric, Saita, Cristian
The problem of data cleaning, which consists of removing inconsistencies and errors from original data sets, is well known in the area of decision support systems and data warehouses. However, for...
Pushing XML Queries inside Relational Databases (2001)
Manolescu, Ioana, Florescu, Daniela, Kossmann, Donald
Due to the increasing usage of XML as an exchange format, querying XML documents is also gaining attention. While several languages exist, work is under way to define the W3C standard for an XML...
Declarative Data Cleaning : Language, Model, and Algorithms (2001)
Galhardas, Helena, Florescu, Daniela, Shasha, Dennis, Simon, Eric, Saita, Cristian
The problem of data cleaning, which consists of emoving inconsistencies and errors from original data sets, is well known in the area of decision support systems and data warehouses. However, for...
Pushing XML Queries inside Relational Databases (2001)
Manolescu, Ioana, Florescu, Daniela, Kossmann, Donald
Due to the increasing usage of XML as an exchange format, querying XML documents is also gaining attention. While several languages exist, work is under way to define the W3C standard for an XML...
Declarative Data Cleaning : Language, Model, and Algorithms (2001)
Galhardas, Helena, Florescu, Daniela, Shasha, Dennis, Simon, Eric, Saita, Cristian
The problem of data cleaning, which consists of emoving inconsistencies and errors from original data sets, is well known in the area of decision support systems and data warehouses. However, for...
Pushing XML Queries inside Relational Databases (2001)
Manolescu, Ioana, Florescu, Daniela, Kossmann, Donald
Due to the increasing usage of XML as an exchange format, querying XML documents is also gaining attention. While several languages exist, work is under way to define the W3C standard for an XML...
The XML Benchmark Project (2001)
A. R. Schmidt, F. Waas, M. L. Kersten, D. Florescu, I. Manolescu, M. J. Carey, ...
and their applications. SMC is sponsored by the Netherlands Organization for Scientific Research (NWO). CWI is a member of
Improving data cleaning quality using a data lineage facility (2001)
Helena Galhardas, Inria Rocquencourt, Daniela Florescu, Dennis Shasha, Eric Simon, Cristian-augustin Saita
The problem of data cleaning, which consists of removing inconsistencies and errors from original data sets, is well known in the area of decision support systems and data warehouses. However, for...
Declarative Data Cleaning: Language, Model, and Algorithms (2001)
Helena Galhardas, Daniela Florescu, Dennis Shasha
The problem of data cleaning, which consists of removing inconsistencies and errors from original data sets, is well known in the area of decision support systems and data warehouses. This holds...
Pushing XML queries inside relational databases (2001)
Donald Kossmann, Ioana Manolescu, Ioana Manolescu, Daniela Florescu, Daniela Florescu
, Donald Kossmann z The`me 3-- Interaction homme-machine, images, donne'es, connaissances Projet Caravel Rapport de recherche nr ^ 4112-- January 2001-- 41 pages
Adaptive Query Processing for Internet Applications (2000)
Ives, Zachary G, Levy, Alon Y, Weld, Daniel S, Florescu, Daniela, Friedman, Marc
As the area of data management for the Internet has gained in popularity, recent work has focused on effectively dealing with unpredictable, dynamic data volumes and transfer rates using adaptive...
Caching Strategies for Data-Intensive Web Sites (2000)
Florescu, Daniela, Issarny, Valérie, Valduriez, Patrick, Yagoub, Khaled
A data-intensive Web site is a Web server that accesses large numbers of pages whose content is dynamically extracted from a database. In this context, returning a Web page may require costly...
Caching Strategies for Data-Intensive Web Sites (2000)
Florescu, Daniela, Issarny, Valérie, Valduriez, Patrick, Yagoub, Khaled
A data-intensive Web site is a Web server that accesses large numbers of pages whose content is dynamically extracted from a database. In this context, returning a Web page may require costly...
Caching Strategies for Data-Intensive Web Sites (2000)
Florescu, Daniela, Issarny, Valérie, Valduriez, Patrick, Yagoub, Khaled
A data-intensive Web site is a Web server that accesses large numbers of pages whose content is dynamically extracted from a database. In this context, returning a Web page may require costly...
XPERANTO: Publishing object-relational data as XML (2000)
Michael Carey, Daniela Florescu, Zachary Ives, Ying Lu, Jayavel Shanmugasundaram, Eugene Shekita, ...
Since its introduction, XML, the eXtended Markup Language, has quickly emerged as the universal format for publishing and exchanging data in the World Wide Web. As a result, data sources, including...
An extensible framework for data cleaning (2000)
Helena Galhardas, Daniela Florescu, Dennis Shasha, Eric Simon
Data integration solutions dealing with large amounts of data have been strongly required in the last few years. Besides the traditional data integration problems (e.g. schema integration, local to...
WEAVE: A Data-Intensive Web Site Management System (2000)
Daniela Florescu, Valerie Issarny, Patrick Valduriez, Khaled Yagoub
This paper describes the WEAVE data-intensive Web sites management system [4], a system developed at Inria to address the performance problem of accessing dynamic Web pages in the case of sites whose...
Integrating Keyword Search into XML Query Processing (2000)
Daniela Florescu, Inria Rocquencourt, Donald Kossmann, Ioana Manolescu
Due to the popularity of the XML data format, several query languagesfor XML have been proposed, specially devised to handle data whose structure is unknown, loose, or absent. While these languages...
Agora: Living with XML and Relational (2000)
Ioana Manolescu, Daniela Kossmann, Daniela Florescu, Donald Kossmann, Florian Xhumari, Dan Olteanu
Introduction There has been a significant body of research in the last fifteen years dedicated to integration of data from various repositories, exhibiting heterogeneous formats, and sometimes access...
Quilt: An XML Query Language for Heterogeneous Data Sources (2000)
Don Chamberlin Ibm, Don Chamberlin, Jonathan Robie, Daniela Florescu
The World Wide Web promises to transform human society by making virtually all types of information instantly available everywhere. Two prerequisites for this promise to be realized are a universal...
XPERANTO: Publishing Object-Relational Data as XML (2000)
Michael Carey, Daniela Florescu, Zachary Ives, Ying Lu, Jayavel Shanmugasundaram, Eugene Shekita, ...
Since its introduction, XML, the eXtended Markup Language, has quickly emerged as the universal format for publishing and exchanging data in the World Wide Web. As a result, data sources, including...
Declarative Specification of Web Sites with STRUDEL (2000)
Mary Fernández, Daniela Florescu, Alon Levy, Dan Suciu
Strudel is a system for implementing data-intensive Web sites, which typically integrate information from multiple data sources and have complex structure. Strudel's key idea is separating the...
Declaratively cleaning your data using AJAX (2000)
Helena Galhardas, Daniela Florescu, Dennis Shasha, Eric Simon
Data quality concerns arise when correcting anomalies in a single data source, or integrating data coming from multiple sources into a single data repository. The information handled may also need to...
XPERANTO: Publishing Object-Relational Data as XML (2000)
Michael Carey Daniela, Michael Carey, Daniela Florescu, Zachary Ives, Ying Lu, Jayavel Shanmugasundaram, ...
Since its introduction, XML, the eXtended Markup Language, has quickly emerged as the universal format for publishing and exchanging data in the World Wide Web. As a result, data sources, including...
Declaratively cleaning your data using AJAX (2000)
Helena Galhardas, Daniela Florescu, Dennis Shasha, Eric Simon
Data quality concerns arise when correcting anomalies in a single data source, or integrating data coming from multiple sources into a single data repository. The information handled may also need to...
Adaptive Query Processing for Internet Applications (2000)
Zachary G. Ives, Alon Y. Levy, Daniel S. Weld, Daniela Florescu, Marc Friedman
As the area of data management for the Internet has gained in popularity, recent work has focused on effectively dealing with unpredictable, dynamic data volumes and transfer rates using adaptive...
Adaptive Query Processing for Internet Applications (2000)
Zachary G. Ives, Alon Y. Levy, Daniel S. Weld, Daniela Florescu, Marc Friedman
As the area of data management for the Internet has gained in popularity, recent work has focused on effectively dealing with unpredictable, dynamic data volumes and transfer rates using adaptive...
Quilt: An XML Query Language for Heterogeneous Data Sources (2000)
Don Chamberlin, Jonathan Robie, Daniela Florescu
. The World Wide Web promises to transform human society by making virtually all types of information instantly available everywhere. Two prerequisites for this promise to be realized are a universal...
Caching Strategies for Data-Intensive Web Sites (2000)
Khaled Yagoub, Daniela Florescu, Valerie Issarny, Patrick Valduriez
Data-intensive Web sites serve large volumes of pages whose content is dynamically extracted from a database. Such Web sites have very high software development and maintenance costs and in general...
Data Engineering Special Issue on Adaptive Query Processing, June 2000 (2000)
Alon Levy (Ed.), Adaptive Query, Processing Technology, Evolution Joseph, M. Hellerstein, Sirish Ch, ...
As query engines are scaled and federated, they must cope with highly unpredictable and changeable environments. In the Telegraph project, we are attempting to architect and implement a continuously...
Adaptive Query Processing for Internet Applications (2000)
Zachary G. Ives, Daniela Florescu, Alon Y. Levy, Marc Friedman, Daniel S. Weld
As the area of data management for the Internet has gained in popularity, recent work has focused on effectively dealing with unpredictable, dynamic data volumes and transfer rates using adaptive...
Integrating Keyword Search into XML Query Processing (2000)
Daniela Florescu, Donald Kossmann, Ioana Manolescu, Inria Rocquencourt
Due to the popularity of the XML data format, several query languages for XML have been proposed, specially devised to handle data whose structure is unknown, loose, or absent. While these languages...
An Extensible Framework for Data Cleaning (1999)
Galhardas, Helena, Florescu, Daniela, Shasha, Dennis, Simon, Eric
Data integration solutions dealing with large amounts of data have been strongly required in the last few years. Besides the traditional data integration problems (e.g. schema integration, local to...
An Adaptive Query Execution System for Data Integration (1999)
Ives, Zachary G, Florescu, Daniela, Friedman, Marc, Levy, Alon, Weld, Daniel S
Query processing in data integration occurs over network bound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three reasons: there is an...
Florescu, Daniela, Kossmann, Donald
XML is emerging as one of the dominant data formats for data processing on the Internet. To query XML data, query languages like XQL, Lorel, XML-QL, or XML-GL have been proposed. In this paper, we...
Query Optimization in the Presence of Limited Access Patterns (1999)
Florescu, Daniela, Levy, Alon, Manolescu, Ioana, Suciu, Dan
We consider the problem of query optimization in the presence of limitations on access patterns to the data (i.e., when one must provide v alues for one of theattributes of a relation in order to...
Run-time Management of Data Intensive Web-sites (1999)
Florescu, Daniela, Levy, Alon, Suciu, Dan, Yagoub, Khaled
An increasing number of web sites have their data extracted from relational databases. Several commercial products and research prototypes have been moving in the direction of declarative...
An Extensible Framework for Data Cleaning (1999)
Galhardas, Helena, Florescu, Daniela, Shasha, Dennis, Simon, Eric
Data integration solutions dealing with large amounts of data have been strongly required in the last few years. Besides the traditional data integration problems (e.g. schema integration, local to...
Florescu, Daniela, Kossmann, Donald
XML is emerging as one of the dominant data formats for data processing on the Internet. To query XML data, query languages like XQL, Lorel, XML-QL, or XML-GL have been proposed. In this paper, we...
Query Optimization in the Presence of Limited Access Patterns (1999)
Florescu, Daniela, Levy, Alon, Manolescu, Ioana, Suciu, Dan
We consider the problem of query optimization in the presence of limitations on access patterns to the data (i.e., when one must provide v alues for one of theattributes of a relation in order to...
Run-time Management of Data Intensive Web-sites (1999)
Florescu, Daniela, Levy, Alon, Suciu, Dan, Yagoub, Khaled
An increasing number of web sites have their data extracted from relational databases. Several commercial products and research prototypes have been moving in the direction of declarative...
An Extensible Framework for Data Cleaning (1999)
Galhardas, Helena, Florescu, Daniela, Shasha, Dennis, Simon, Eric
Data integration solutions dealing with large amounts of data have been strongly required in the last few years. Besides the traditional data integration problems (e.g. schema integration, local to...
Florescu, Daniela, Kossmann, Donald
XML is emerging as one of the dominant data formats for data processing on the Internet. To query XML data, query languages like XQL, Lorel, XML-QL, or XML-GL have been proposed. In this paper, we...
Query Optimization in the Presence of Limited Access Patterns (1999)
Florescu, Daniela, Levy, Alon, Manolescu, Ioana, Suciu, Dan
We consider the problem of query optimization in the presence of limitations on access patterns to the data (i.e., when one must provide v alues for one of theattributes of a relation in order to...
Run-time Management of Data Intensive Web-sites (1999)
Florescu, Daniela, Levy, Alon, Suciu, Dan, Yagoub, Khaled
An increasing number of web sites have their data extracted from relational databases. Several commercial products and research prototypes have been moving in the direction of declarative...
Query optimization in the presence of limited access patterns (1999)
We consider the problem of query optimization in the presence of limitations on access patterns to the data (i.e., when one must provide values for one of the attributes of a relation in order to...
Storing and querying XML data using an RDMBS (1999)
Daniela Florescu, Donald Kossmann
XML is rapidly becoming a popular data format. It can be expected that soon large volumes of XML data will exist. XML data is either produced manually (like html documents today), or it is generated...
Verifying Integrity Constraints on Web Sites (1999)
Daniela Florescu, Alon Levy, Dan Suciu
Data-intensive Web sites have created a new form of knowledge base, as richly structured bodies of data. Several novel systems for creating dataintensive Web sites support declarative specification...
Daniela Florescu, Daniela Florescu, Donald Kossmann, Donald Kossmann, Projet Rodin
apport de recherche
An Adaptive Query Execution System for Data Integration (1999)
Zachary Ives, Daniela Florescu, Inria Roquencourt, Marc Friedman, Alon Levy, Daniel Weld
Query processing in data integration occurs over networkbound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three reasons: there is an...
Alin Deutsch, Mary Fernandez, Daniela Florescu, Alon Levy, David Maier, Dan Suciu
XML threatens to expand beyond its document markup origins to become the basis for data interchange on the Internet. One highly anticipated application of XML is the interchange of electronic data...
Query optimization in the presence of limited access patterns (1999)
Daniela Florescu, Alon Levy, Ioana Manolescu, Dan Suciu
We consider the problem of query optimization in the presence of limitations on access patterns to the data (i.e., when one must provide values for one of the attributes of a relation in order to...
Optimization of run-time management of data intensive Web sites (1999)
Daniela Florescu, Alon Levy, Dan Suciu, Khaled Yagoub
The World Wide Web (WWW) has been proven to be an excellent medium for businesses to disseminate information. As a result, the ability to populate web sites
Verifying Integrity Constraints on Web Sites (1999)
Mary Fern'andez Att, Daniela Florescu, Alon Levy, Dan Suciu
Data-intensive Web sites have created a new form of knowledge base, as richly structured bodies of data. Several novel systems for creating dataintensive Web sites support declarative specification...
Optimization of Run-time Management of Data Intensive Web Sites (1999)
Daniela Florescu, Alon Levy, Dan Suciu, Khaled Yagoub
An increasing number of web sites have their data extracted from relational databases. Several commercial products and research prototypes have been moving in the direction of declarative...
Daniela Florescu, Daniela Florescu, Donald Kossmann, Donald Kossmann, Projet Rodin
: XML is emerging as one of the dominant data formats for data processing on the Internet. To query XML data, query languages like XQL, Lorel, XML-QL, or XML-GL have been proposed. In this paper, we...
Daniela Florescu, Donald Kossmann
XML is emerging as one of the dominant data formats for data processing on the Internet. To query XML data, query languages likeXQL, Lorel, XML-QL, or XML-GL have been proposed. In this paper, we...
Alin Deutsch, Mary Fernandez, Daniela Florescu, Alon Levy, David Maier, Dan Suciu
this paper we address the problem of querying XML databases. We start spelling out some requirements for an XML query language in Section 2. Next we describe in some detail XML-QL in Section 3, a...
Optimization of Run-time Management of Data Intensive Web-sites (1999)
Daniela Florescu, Alon Levy, Dan Suciu, Khaled Yagoub
An increasing number of web sites have their data extracted from relational databases. Several commercial products and research prototypes have been moving in the direction of declarative...
Query Optimization in the Presence of Limited Access Patterns (1999)
Daniela Florescu, Daniela Florescu, Alon Levy, Alon Levy, Ioana Manolescu, Ioana Manolescu, ...
We consider the problem of query optimization in the presence of limitations on access patterns to the data (i.e., when one must provide values for one of the attributes of a relation in order to...
Optimization of Run-time Management of Data Intensive Web Sites (1999)
Daniela Florescu Inria, Daniela Florescu, Alon Levy, Dan Suciu, Khaled Yagoub
An increasing number of web sites have their data extracted from relational databases. Several commercial products and research prototypes have been moving in the direction of declarative speci...
Query Optimization in the Presence of Limited Access Patterns (1999)
Daniela Florescu, Alon Levy, Ioana Manolescu, Dan Suciu
We consider the problem of query optimization in the presence of limitations on access patterns to the data (i.e., when one must provide values for one of the attributes of a relation in order to...
Query Optimization in the Presence of Limited Access Patterns (1999)
Daniela Florescu, Alon Levy, Ioana Manolescu, Dan Suciu
We consider the problem of query optimization in the presence of limitations on access patterns to the data (e.g., in order to obtain tuples of a relation, one must provide values for one of the...
An Adaptive Query Execution System for Data Integration (1999)
Zachary G. Ives, Daniela Florescu, Inria Roquencourt
Query processing in data integration occurs over network-bound, autonomous data sources. This requires extensions to traditional optimization and execution techniques for three reasons: there is an...
Optimization of run-time management of data intensive Web sites (1999)
Daniela Florescu, Alon Levy, Dan Suciu, Khaled Yagoub
The`me 3-- Interaction homme-machine, images, donne'es, connaissances Projet Rodin Rapport de recherche n*????-- March 1999-- 41 pages
Query optimization in the presence of limited access patterns (1999)
Daniela Florescu, Inria Rocquencourt, Suciu At
1 Introduction The goal of a query optimizer of a database system is to translate a declarative query expressed on a logical schema into an imperative query execution plan that accesses the physical...
Reasoning About Web-Site Structure (1998)
Mary Fernandez, Daniela Florescu, Inria Roquencourt, Alon Levy, Dan Suciu
Building large Web sites is similar in many ways to building knowledge and database systems. In particular, by providing a declarative, logical view of a Web site's data and structure, many of a...
A Query Language for XML (1998)
Alin Deutsch, Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu
An important application of XML is the interchange of electronic data (EDI) between multiple data sources on the Web. As XML data proliferates on the Web, applications will need to integrate and...
Warehousing and Incremental Evaluation for Web Site Management (1998)
Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu
Recently, several systems have been proposed for building Web sites from declarative specifications. The salient feature of these systems is that they model both the structure and the content of a...
Reasoning About Web-Site Structure (1998)
Mary Fernandez, Daniela Florescu, Inria Roquencourt, Alon Levy, Dan Suciu
Building large Web sites is similar in many ways to building knowledge and database systems. In particular, by providing a declarative, logical view of a Web site's data and structure, many of a...
Database Techniques for the World-Wide Web: A Survey (1998)
Daniela Florescu, Alon Levy, Alberto Mendelzon, Inria Roquencourt
, url: www.../abstr1.html] [label: Abstract, url: www.../abstr2.html] [label: Full version, url: www.../paper2.ps.Z] [label: Full version, url: www.../paper13.ps.Z] [label: Full version, url:...
Overview of Strudel - A Web-Site Management System (1998)
Mary Fernandez, Daniela Florescu, Jaewoo Kang, Alon Levy, Dan Suciu
The Strudel system applies concepts from database management systems to the process of building Web sites. Strudel's key idea is separating the management of the site's data, the creation...
Database Techniques for the World-Wide Web: A Survey (1998)
Daniela Florescu, Inria Roquencourt, Alon Levy, Alberto Mendelzon
, url: www.../abstr1.html] [label: Abstract, url: www.../abstr2.html] [label: Full version, url: www.../paper2.ps.Z] [label: Full version, url: www.../paper13.ps.Z] [label: Full version, url:...
Catching the Boat with Strudel: Experiences with a Web-Site Management System (1998)
Mary Fernandez, Daniela Florescu, Jaewoo Kang, Alon Levy, Dan Suciu
Managing Web sites is a tedious data-management task, because today's Web sites often are derived from multiple data sources and have complex structures. To simplify these tasks, Web-site...
Database Techniques for the World-Wide Web: A Survey (1998)
Daniela Florescu, Inria Roquencourt, Alon Levy, Alberto Mendelzon
The primary goal of this survey is to classify the different tasks to which database concepts have been applied, and to emphasize the technical innovations that are required to do so. We focus on...
Reasoning About Web-Site Structure (1998)
Mary Fernandez, Daniela Florescu, Inria Roquencourt, Alon Levy, Dan Suciu
Building large Web sites is similar in many ways to building knowledge and database systems. In particular, by providing a declarative, logical view of a Web site's data and structure, many of a...
Overview of Strudel - A Web-Site Management System”. Networking and Information Systems 1(1 (1998)
Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu, Jaewoo Kang
ABSTRACT. The Strudel system applies concepts from database management systems to the process of building Web sites. Strudel’s key idea is separating the management of the site’s data, the...
A Query Language for XML (1998)
Alin Deutsch Mary, Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu
An important application of XML is the interchange of electronic data (EDI) between multiple data sources on the Web. As XML data proliferates on the Web, applications will need to integrate and...
Query containment for conjunctive queries with regular expressions (1998)
Daniela Florescu, Alon Levy, Dan Suciu
All query languages proposed for semistructured data share as common characteristic the ability to traverse arbitrary long path in the data in the form of regular path expressions. The expressive...
Using probabilistic information in data integration (1997)
Daniela Florescu, Daphne Koller
The goal of a mediator system is to provide users a uniform interface to the multitude of informa-tion sources. To translate user queries, given in a mediated schema, to queries on the data sources,...
A Query Language for a Web-Site Management System (1997)
Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu
", "Author". In addition it constructs a special node Authors() and connects it to all pages corresponding to "Author"s. The output graph is called SiteGraph. One way to...
A Query Language and Processor for a Web-Site Management System (1997)
Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu
syntax level. At this level, we apply source-to-source transformations to reduce the number of edges that must be traversed in the input graph. We do this by finding common prefixes in multiple...
STRUDEL: A Web-site Management System (1997)
Mary Fernandez, Daniela Florescu, Jaewoo Kang, Alon Levy, Dan Suciu
Introduction The growth of the World-Wide Web has created a new kind of data management problem: building and maintaining Web sites. Building a Web site involves several tasks, such as choosing what...
A Query Language and Processor for a Web-Site Management System (1997)
Mary Fernandez Daniela, Daniela Florescu, Alon Levy, Dan Suciu
syntax level. At this level, we apply source-to-source transformations to reduce the number of edges that must be traversed in the input graph. We do this by finding common prefixes in multiple...
A Query Language for a Web-Site Management System (1997)
Mary Fernandez, Daniela Florescu, Alon Levy, Dan Suciu
", "Author". In addition it constructs a special node Authors() and connects it to all pages corresponding to "Author"s. The output graph is called SiteGraph. One way to...
Using Probabilistic Information in Data Integration (1997)
Daniela Florescu, Daphne Koller, Alon Levy
The goal of a mediator system is to provide users a uniform interface to the multitude of information sources. To translate user queries, given in a mediated schema, to queries on the data sources,...
Using Probabilistic Information in Data Integration (1997)
Daniela Florescu, Daphne Koller, Alon Levy
The goal of a mediator system is to provide users a uniform interface to the multitude of information sources. To translate user queries, given in a mediated schema, to queries on the data sources,...
STRUDEL: A Web-site Management System (1997)
Mary Fernandez, Daniela Florescu, Jaewoo Kang, Alon Levy, Dan Suciu
Introduction The growth of the World-Wide Web has created a new kind of data management problem: building and maintaining Web sites. Building a Web site involves several tasks, such as choosing what...
Dynamic Load Balancing in Hierarchical Parallel Database Systems (1996)
Bouganim, Luc, Florescu, Daniela, Valduriez, Patrick
We consider the execution of multi-join queries in a hierarchical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, load balancing must be...
Dynamic Load Balancing in Hierarchical Parallel Database Systems (1996)
Bouganim, Luc, Florescu, Daniela, Valduriez, Patrick
We consider the execution of multi-join queries in a hierarchical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, load balancing must be...
Dynamic Load Balancing in Hierarchical Parallel Database Systems (1996)
Bouganim, Luc, Florescu, Daniela, Valduriez, Patrick
We consider the execution of multi-join queries in a hierarchical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, load balancing must be...
Dynamic Load Balancing in Hierarchical Parallel Database Systems (1996)
Luc Bouganim, Luc Bouganim, Daniela Florescu, Daniela Florescu, Patrick Valduriez, Patrick Valduriez, ...
: We consider the execution of multi-join queries in a hierarchical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, load balancing must...
Flora - Un Optimiseur pour Bases de Données à Objets (1996)
Daniela Florescu, Jean-robert Gruser, Hubert Naacke, Zhao-Hui Tang, Mikal Ziane
this article, we present the Flora system, a plateform for the optimization of object-oriented database queries. Based on a very general algebra which supports the ODMG model, Flora can take...
A Methodology For Query Reformulation In Cis Using Semantic Knowledge (1996)
Daniela Florescu, Louiqa Raschid
We consider Cooperative Information Systems (CIS) that are multidatabase systems (MDBMS), with a common object-oriented model, based on the ODMG standard, together with local databases that may be...
Dynamic Load Balancing in Hierarchical Parallel Database Systems (1996)
Luc Bouganim, Daniela Florescu, Patrick Valduriez
We consider the execution of multi-join queries in a hierarchical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, the problem of load...
Dynamic Load Balancing in Hierarchical Parallel Database Systems (1996)
Luc Bouganim, Daniela Florescu, Patrick Valduriez
We consider the execution of multi-join queries in a hierarchical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, the problem of load...
Dynamic Load Balancing in Hierarchical Parallel Database Systems (1996)
Luc Bouganim Bull, Daniela Florescu, Patrick Valduriez
We consider the execution of multi-join queries in a hierarchical parallel system, i.e., a shared-nothing system whose nodes are shared-memory multiprocessors. In this context, the problem of load...
Answering Queries Using OQL View Expressions (1996)
Daniela Florescu, Louiqa Raschid, Patrick Valduriez
We propose a technique to answer OQL query expressions using OQL view expressions. The technique for reformulation is based on the extended pattern-matching of well typed expressions. It uses an...
Query Reformulation in Multidatabase Systems using Semantic Knowledge (1995)
Florescu, Daniela, Raschid, Louiqa, Valduriez, Patrick
We consider a multidatabase system (MDBMS) with a common object-oriented model, based on the ODMG standard, and local databases that may be relational, object-oriented, or file systems. The MDBMS...
Query Reformulation in Multidatabase Systems using Semantic Knowledge (1995)
Florescu, Daniela, Raschid, Louiqa, Valduriez, Patrick
We consider a multidatabase system (MDBMS) with a common object-oriented model, based on the ODMG standard, and local databases that may be relational, object-oriented, or file systems. The MDBMS...
Query Reformulation in Multidatabase Systems using Semantic Knowledge (1995)
Florescu, Daniela, Raschid, Louiqa, Valduriez, Patrick
We consider a multidatabase system (MDBMS) with a common object-oriented model, based on the ODMG standard, and local databases that may be relational, object-oriented, or file systems. The MDBMS...
Thesis (while visiting INRIA): Answering Queries using Views in Agora (1995)
Supervisors Inria, Ioana Manolescu, Dr. Daniela Florescu
Research Interests My research interests are in database and information systems with a current focus on incomplete information, data integration, and query processing on XML data streams.
Query Reformulation in Multidatabase Systems using Semantic Knowledge (1995)
Daniela Florescu, Daniela Florescu, Louiqa Raschid, Louiqa Raschid, Patrick Valduriez, Patrick Valduriez, ...
: We consider a multidatabase system (MDBMS) with a common object-oriented model, based on the ODMG standard, and local databases that may be relational, object-oriented, or file systems. The MDBMS...
Query Reformulation in Multidatabase Systems using Semantic Knowledge (1995)
Daniela Florescu Louiqa, Daniela Florescu, Louiqa Raschid, Patrick Valduriez
We consider a multidatabase system (MDBMS) with a common object-oriented model, based on the ODMG standard, and local databases that may be relational, object-oriented, or file systems. The MDBMS...
Using Heterogeneous Equivalences for Query Rewriting in Multidatabase Systems (1995)
Daniela Florescu, Louiqa Raschid, Patrick Valduriez
In order to have significant practical impact on future information systems, multidatabase management systems (MDBMS) must be both flexible and efficient. We consider a MDBMS with a common...
Query Reformulation in Multidatabase Systems using Semantic Knowledge (1995)
Daniela Florescu, Louiqa Raschid, Patrick Valduriez
We consider a multidatabase system (MDBMS) with a common object-oriented model, based on the ODMG standard, and local databases that may be relational, object-oriented, or file systems. The MDBMS...
Querying Xml, Data Alin Deutsch, Mary Fern, Daniela Florescu, Alon Levy, David Maier, ...
is published quarterly and is distributed to all TC members. Its scope includes the design, implementation, modelling, theory and application of database systems and their technology. Letters,...
Query Containment for Conjunctive Queries With Regular Expressions
Daniela Florescu, Alon Levy, Dan Suciu
The management of semistructured data has recently received significant attention because of the need of several applications to model and query large volumes of irregular data. This paper considers...
Catching the Boat with Strudel: Experiences with a Web-Site Management System
Mary Fernández, Daniela Florescu, Inria Roquencourt, Jaewoo Kang, Alon Levy, Dan Suciu
The Strudel system applies concepts from database management systems to the process of building Web sites. Strudel's key idea is separating the management of the site's data, the creation...
Query Containment for Conjunctive Queries With Regular Expressions
Daniela Florescu, Alon Levy, Dan Suciu
The management of semistructured data has recently received significant attention because of the need of several applications to model and query large volumes of irregular data. This paper considers...
Defining the Search Space for Query Optimization in a Heterogeneous Database Management System
Daniela Florescu, Louiqa Raschid, Patrick Valduriez
: We consider a heterogeneous database system (HDBMS) with a global object schema, and remote target databases that may be relational or object-oriented. The problem is to transform an initial query,...