A graph-oriented object model for database end-user interfaces
SIGMOD '90 Proceedings of the 1990 ACM SIGMOD international conference on Management of data
Federated database systems for managing distributed, heterogeneous, and autonomous databases
ACM Computing Surveys (CSUR) - Special issue on heterogeneous databases
Query evaluation techniques for large databases
ACM Computing Surveys (CSUR)
Hy+: a Hygraph-based query and visualization system
SIGMOD '93 Proceedings of the 1993 ACM SIGMOD international conference on Management of data
Architecture and applications of the Hy+ visualization system
IBM Systems Journal
Answering queries using views (extended abstract)
PODS '95 Proceedings of the fourteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Research problems in data warehousing
CIKM '95 Proceedings of the fourth international conference on Information and knowledge management
View maintenance in a warehousing environment
SIGMOD '95 Proceedings of the 1995 ACM SIGMOD international conference on Management of data
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
Template-based wrappers in the TSIMMIS system
SIGMOD '97 Proceedings of the 1997 ACM SIGMOD international conference on Management of data
Managing semantic heterogeneity in databases: a theoretical prospective
PODS '97 Proceedings of the sixteenth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Principles of distributed database systems (2nd ed.)
Principles of distributed database systems (2nd ed.)
GraphLog: a visual formalism for real life recursion
PODS '90 Proceedings of the ninth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
A general formal framework for schema transformation
Data & Knowledge Engineering - Special issue on ER '97
An overview and classification of mediated query systems
ACM SIGMOD Record
Fundamentals of Database Systems
Fundamentals of Database Systems
Scaling Access to Heterogeneous Data Sources with DISCO
IEEE Transactions on Knowledge and Data Engineering
Object Exchange Across Heterogeneous Information Sources
ICDE '95 Proceedings of the Eleventh International Conference on Data Engineering
Information Integration Using Logical Views
ICDT '97 Proceedings of the 6th International Conference on Database Theory
Don't Scrap It, Wrap It! A Wrapper Architecture for Legacy Data Sources
VLDB '97 Proceedings of the 23rd 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
VLDB '97 Proceedings of the 23rd International Conference on Very Large Data Bases
A Uniform Approach to Inter-model Transformations
CAiSE '99 Proceedings of the 11th International Conference on Advanced Information Systems Engineering
A Semantic Approach to Integrating XML and Structured Data Sources
CAiSE '01 Proceedings of the 13th International Conference on Advanced Information Systems Engineering
Graphical interaction with heterogeneous databases
The VLDB Journal — The International Journal on Very Large Data Bases
Using AutoMed metadata in data warehousing environments
DOLAP '03 Proceedings of the 6th ACM international workshop on Data warehousing and OLAP
Visual programming environment based on hypergraph representations
ICCVG'10 Proceedings of the 2010 international conference on Computer vision and graphics: Part II
Visualizing software artifacts using hypergraphs
Proceedings of the 26th Spring Conference on Computer Graphics
Hypergraph-based multidimensional data modeling towards on-demand business analysis
Proceedings of the 13th International Conference on Information Integration and Web-based Applications and Services
Query-by-example approach towards on-demand multidimensional analysis
International Journal of Business Intelligence and Data Mining
Visual access to graph content using magic lenses and filtering
Proceedings of the 28th Spring Conference on Computer Graphics
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Information integration in the World Wide Web has evolved to a new framework where the information is represented and manipulated using a wide range of modeling languages. Current approaches to data integration use wrappers to convert the different modeling languages into a common data model. In this work we use a nested hypergraph based data model (called HDM) as a common data model for integrating different structured or semi-structured data. We present a hypergraph query language (HQL) that allows the integration of the wrapped data sources through the creation of views for mediators, and the querying of the wrapped data sources and the mediator views by the end users. We also show that HQL queries (views) can be constructed from other views and/or source schemas using a set of primitive transformations. Our integration architecture is flexible and allows some (or all) of the views in a mediator to be materialized.