Incomplete Information in Relational Databases
Journal of the ACM (JACM)
A relational algebra for complex objects based on partial information
MFDBS 91 Proceedings of the 3rd symposium on Mathematical fundamentals of database and knowledge base systems
A semantics for complex objects and approximate answers
Journal of Computer and System Sciences
Answering heterogeneous database queries with degrees of uncertainty
Distributed and Parallel Databases
LATEX (2nd ed.): a document preparation system: user's guide and reference manual
LATEX (2nd ed.): a document preparation system: user's guide and reference manual
Normalizing incomplete databases
PODS '95 Proceedings of the fourteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
A framework for supporting data integration using the materialized and virtual approaches
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
A query language and optimization techniques for unstructured data
SIGMOD '96 Proceedings of the 1996 ACM SIGMOD international conference on Management of data
ROL: a deductive object base language
Information Systems
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Ariadne: a system for constructing mediators for Internet sources
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Database techniques for the World-Wide Web: a survey
ACM SIGMOD Record
On Databases with Incomplete Information
Journal of the ACM (JACM)
DIS '96 Proceedings of the fourth international conference on on Parallel and distributed information systems
IEEE Transactions on Knowledge and Data Engineering
On a Declarative Semantics for Web Queries
DOOD '97 Proceedings of the 5th International Conference on Deductive and Object-Oriented Databases
Object Exchange Across Heterogeneous Information Sources
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
ICDT '97 Proceedings of the 6th International Conference on Database Theory
Adding Structure to Unstructured Data
ICDT '97 Proceedings of the 6th International Conference on Database Theory
WebOQL: Restructuring Documents, Databases, and Webs
ICDE '98 Proceedings of the Fourteenth International Conference on Data Engineering
W3QS: A Query System for the World-Wide Web
VLDB '95 Proceedings of the 21th International Conference on Very Large Data Bases
Querying Heterogeneous Information Sources Using Source Descriptions
VLDB '96 Proceedings of the 22th International Conference on Very Large Data Bases
WebSuite: A Tool Suite for Harnessing Web Data
WebDB '98 Selected papers from the International Workshop on The World Wide Web and Databases
Estimating the Quality of Databases
FQAS '98 Proceedings of the Third International Conference on Flexible Query Answering Systems
A Declarative Language for Querying and Restructuring the Web
RIDE '96 Proceedings of the 6th International Workshop on Research Issues in Data Engineering (RIDE '96) Interoperability of Nontraditional Database Systems
EDBT '02 Proceedings of the Worshops XMLDM, MDDE, and YRWS on XML-Based Data Management and Multimedia Engineering-Revised Papers
Capturing Semantics in HTML Documents
DEXA '02 Proceedings of the 13th International Conference on Database and Expert Systems Applications
FICSR: feedback-based inconsistency resolution and query processing on misaligned data sources
Proceedings of the 2007 ACM SIGMOD international conference on Management of data
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With the recent popularity of the World Wide Web, an enormous amount of heterogeneous information is now available online. As a result, information about real world objects may spread over different data sources and may be partial and inconsistent. How to manipulate such semistructured data is thus a challenge. Previous work on semistructured data mainly focuses on developing query languages and systems to retrieve semistructured data. Relatively less attention has been paid to the manipulation of such data. In order to manipulate such semistructured data, we need a data model that is more expressive than the existing graph-based and tree-based ones to account for the existence of partial and inconsistent information from different data sources. In this paper, we propose such a data model for semistructured data that allows partial and inconsistent information and discuss how to manipulate such semistructured data.