An eBayer’s Desktop Management Solution (2008)
Omar Elangbawy, Advisor Prof, Susan Davidson
For the past two years, I have been independently developing and running an online retail venue using eBay and eBay Stores for a men’s clothing store which I work for outside of Penn. In this time,...
Paolo Atzeni, Val Tannen (eds, Peter Buneman, Susan Davidson, Dan Suciu, Peter Buneman, ...
Published in collaboration with the
Addressing the Provenance Challenge using ZOOM (2008)
Sarah Cohen-boulakia, Olivier Biton, Shirley Cohen, Susan Davidson
ZOOM*UserViews presents a model of provenance for scientific workflows that is simple, generic, and yet sufficiently expressive to answer questions of data and step provenance that have been...
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We discuss the definition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents and scientific...
Pergamon REASONING ABOUT KEYS FOR XML (2008)
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
Abstract — We study absolute and relative keys for XML, and investigate their associated decision problems. We argue that these keys are important to many forms of hierarchically structured data...
Luc Moreau, Bertram Ludäscher, Ilkay Altintas, Roger S. Barga, Shawn Bowers, George Chin, ...
The first Provenance Challenge was a community activity aiming at understanding the expressiveness of provenance representations and capabilities of provenance systems. To this end, a Functional...
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We discuss the definition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents. Keywords: Keys,...
Collection Programming Language, Susan Davidson, Kyle Hart, Limsoon Wong
l if you follow along by executing some of the examples. Further details about CPL and the underlying Kleisli system can be found in [BLS + 94, Won94], and through Mosaic at url...
Presented to the Faculties of the University of Pennsylvania (2007)
Lucian Popa, Val Tannen, Val Tannen, Jonathan Crabtree, Susan Davidson, Alin Deutsch, ...
I am indebted to Val Tannen, my advisor. This dissertation would not have been possible without his invaluable ideas, support, and advice. His deep insight into both fields of databases and...
BioGuideSRS: querying multiple sources with a user-centric perspective (2007)
Cohen-Boulakia, Sarah, Biton, Olivier, Davidson, Susan, Froidevaux, Christine
Summary: Biologists are frequently faced with the problem of integrating information from multiple heterogeneous sources with their own experimental data. Given the large number of public sources, it...
BioGuideSRS: querying multiple sources with a user-centric perspective (2007)
Sarah Cohen-boulakia, Olivier Biton, Susan Davidson, Christine Froidevaux
Biologists are frequently faced with the problem of integrating information from multiple heterogeneous sources with their own experimental data. Given the large number of public sources, it is...
Political News Indexer Senior Design Project by (2007)
Matthew Mizrahi, Faculty Advisor, Dr. Susan Davidson
In and around Washington D.C. today, one of the hottest buzzwords flying around is “digital government. ” Millions of people are logging on to the web every day to get informed about, and get...
BioGuideSRS: Querying Multiple Sources with a user-centric perspective (2007)
Cohen-Boulakia, Sarah, Biton, Olivier, Davidson, Susan, Froidevaux, Christine
Summary: Biologists are frequently faced with the problem of integrating information from multiple heterogeneous sources with their own experimental data. Given the large number of public sources, it...
Designing and Evaluating an XPath Dialect for Linguistic Queries (2006)
Bird, Steven, Chen, Yi, Davidson, Susan, Lee, Haejoong, Zheng, Yifeng
Linguistic research and natural language processingemploy large repositories of ordered trees. XML, a standardordered tree model, and XPath, its associated language, arenatural choices for linguistic...
Designing and Evaluating an XPath Dialect for Linguistic Queries (2006)
Bird, Steven, Chen, Yi, Davidson, Susan, Lee, Haejoong, Zheng, Yifeng
Linguistic research and natural language processing employ large repositories of ordered trees. XML, a standard ordered tree model, and XPath, its associated language, are natural choices for...
Towards a model of provenance and user views in scientific workflows (2006)
Shirley Cohen, Sarah Cohen-boulakia, Susan Davidson
Abstract. Scientific experiments are becoming increasingly large and complex, with a commensurate increase in the amount and complexity of data generated. Data, both intermediate and final results,...
Extending XPath to support linguistic queries (2005)
Bird, Steven, Chen, Yi, Davidson, Susan, Lee, Haejoong, Zheng, Yifeng
Linguistic research and language technology development employlarge data repositories of ordered trees, known as “treebanks.” Wedefine a path language for linguistic trees represented in...
Extending XPath to support linguistic queries (2005)
Bird, Steven, Chen, Yi, Davidson, Susan, Lee, Haejoong, Zheng, Yifeng
Linguistic research and language technology development employ large data repositories of ordered trees, known as “treebanks.” We define a path language for linguistic trees represented...
A User-centric Framework for Accessing Biological Sources and Tools (2005)
Susan B. Davidson, Sarah Cohen-boulakia, Sarah Cohen-boulakia, Susan Davidson, Christine Froidevaux, Christine Froidevaux
Abstract. Biologists face two problems in interpreting their experiments: the integration of their data with information from multiple heterogeneous sources and data analysis with bioinformatics...
Digital Library Information-Technology Infrastructures (2005)
Ioannidis, Yannis, Maier, David, Abiteboul, Serge, Buneman, Peter, Davidson, Susan, Fox, Edward, ...
This paper charts a research agenda on systems-oriented issues in digital libraries. It focuses on the most central and generic system issues, including system architecture, user-level functionality,...
Carmem Satie Hara, Susan Davidson, Wenfei Fan, Benjamin Pierce
To my parents. ii To Wagner and Pedro. iii
RRXS: Redundancy reducing XML storage in relations (2003)
Yi Chen, Susan Davidson, Carmem Hara, Yifeng Zheng
Current techniques for storing XML using relational technology consider the structure of an XML document but ignore its semantics as expressed by keys or functional dependencies. However, when the...
Propagating XML Constraints to Relations (2002)
Susan Davidson Of, Susan Davidson, U. Of Pennsylvania, Wenfei Fan, Carmem Hara, Jing Qin, ...
We present a technique for refining the design of relational storage for XML data based on XML key propagation. Three algorithms are presented: One checks whether a given functional dependency is...
Buneman, Peter, Davidson, Susan, Fan, Wenfei, Hara, Carmem, Tan, Wang-Chiew
We discuss the definition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents and scientific...
Reasoning about keys for XML (2001)
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We study absolute and relative keys for XML, and investigate their associated decision problems. We argue that these keys are important to many forms of hierarchically structured data including XML...
Reasoning about keys for XML (2001)
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We study absolute and relative keys for XML, and investigate their associated decision problems. We argue that these keys are important to many forms of hierarchically structured data including XML...
Reasoning about keys for XML (2001)
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We study absolute and relative keys for XML, and investigate their associated decision problems. We argue that these keys are important to many forms of hierarchically structured data including XML...
Reasoning about keys for XML (2001)
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We study two classes of XML keys introduced in [6], and investigate their associated (finite) implication problems. In contrast to other proposals of keys for XML, these two classes of keys can be...
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We discuss the de nition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents and scienti c...
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We discuss the de nition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents and scienti c...
Reasoning about keys for XML (2001)
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We study two classes of XML keys introduced in [6], and investigate their associated (finite) implication problems. In contrast to other proposals of keys for XML, these two classes of keys can be...
Reasoning about keys for XML (2001)
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We study two classes of XML keys introduced in [6], and investigate their associated (finite) implication problems. In contrast to other proposals of keys for XML, these two classes of keys can be...
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We discuss the definition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents. 1 Introduction Keys...
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We discuss the de nition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents and scienti c...
Peter Buneman, Susan Davidson, Wenfei Fan, Carmem Hara, Wang-chiew Tan
We discuss the de#nition of keys for XML documents, paying particular attention to the concept of a relative key, which is commonly used in hierarchically structured documents. 1 Introduction Keys...
Semantics of Database Transformations (1998)
Davidson, Susan, Buneman, Peter, Kosky, Anthony S
Database transformations arise in many different settings including database integration, evolution of database systems, and implementing user views and data entry tools. This paper surveys...
Semantics of Database Transformations (1998)
Susan Davidson, Peter Buneman, Anthony Kosky
Abstract. Database transformations arise in many di erent settings including database integration, evolution of database systems, and implementing user views and data-entry tools. This paper surveys...
Adding Structure to Unstructured Data (1997)
Peter Buneman, Susan Davidson, Mary Fernandez, Dan Suciu
. We develop a new schema for unstructured data. Traditional schemas resemble the type systems of programming languages. For unstructured data, however, the underlying type may be much less...
Adding Structure to Unstructured Data (1997)
Peter Buneman, Susan Davidson, Mary Fernandez, Dan Suciu
We develop a new schema for unstructured data. Traditional schemas resemble the type systems of programming languages. For unstructured data, however, the underlying type may be much less constrained...
Querying an Object-Oriented Database Using CPL (1997)
Susan Davidson, Carmem Hara, Lucian Popa
The Collection Programming Language (CPL) is based on a complex value model of data, and has successfully been used for querying, transforming and integrating data from a wide variety of structured...
Management of the Patient With Disruptive Vocalization (1997)
Wilson, Nancy L., Sloane, Philip D., Davidson, Susan, Buckwalter, Kathleen, Lindsey, B. Anthony, Ayers, Susan, ...
Disruptive vocalization (DV) is a common problem in the management of cognitively and physically impaired older people. This article reports the results of a consensus meeting convened to provide...
A query language and optimization techniques for unstructured data (1996)
Peter Buneman, Susan Davidson, Gerd Hillebrand, Dan Suciu
A new kind of data model has recently emerged in which the database is not constrained by a conventional schema. Systems like ACeDB, which has become very popular with biologists, and the recent...
A Query Language and Optimization Techniques for Unstructured Data (1996)
Peter Buneman, Susan Davidson, Gerd Hillebrand, Dan Suciu
For certain database tasks that require great flexibility, some people are turning to a new kind of data representation in which the database is not constrained by a schema. Instead, each component...
A Query Language and Optimization Techniques for Unstructured Data (1996)
Peter Buneman, Susan Davidson, Gerd Hillebrand, Dan Suciu
A new kind of data model has recently emerged in which the database is not constrained by a conventional schema. Systems like ACeDB, which has become very popular with biologists, and the recent...
A Query Language and Optimization Techniques for Unstructured Data (1996)
Peter Buneman, Susan Davidson, Gerd Hillebrand, Dan Suciu
A new kind of data model has recently emerged in which the database is not constrained by a conventional schema. Systems like ACeDB, which has become very popular with biologists, and the recent...
A Query Language and Optimization Techniques for Unstructured Data (1996)
Peter Buneman, Susan Davidson, Gerd Hillebrand, Dan Suciu
A new kind of data model has recently emerged in which the database is not constrained by a conventional schema. Systems like ACeDB, which has become very popular with biologists, and the recent...
Programming Constructs for Unstructured Data (1995)
Peter Buneman, Susan Davidson, Dan Suciu
We investigate languages for querying and transforming unstructured data by which we mean languages than can be used without knowledge of the structure (schema) of the database. There are two reasons...
Semantics of Database Transformations (1995)
Susan Davidson, Peter Buneman, Anthony Kosky
. Database transformations arise in many different settings including database integration, evolution of database systems, and implementing user views and data-entry tools. This paper surveys...
Presented to the Faculties of the University ofPennsylvania in Partial Ful llment ofthe (1994)
Limsoon Wong, Mark Steedman, Limsoon Wong, Susan Davidson, Wenfei Fan, Anthony Kosky, ...
by
Language Constructs for Distributed Real-Time Consistency (1989)
Wolfe, Victor, Davidson, Susan, Lee, Insup
In this paper, we present a model and language constructs for a distributed real-time system with the goal of allowing the structured specification of functional and timing constraints, along with...
A Semantics for Complex Objects and Approximate Queries (1988)
Peter Buneman, Susan Davidson, Aaron Watters
A new definition of complex objects is introduced which provides a denotation for incomplete tuples as well as partially described sets. Set values are "sandwiched" between...