International Journal of Man-Machine Studies
A comparative analysis of methodologies for database schema integration
ACM Computing Surveys (CSUR)
O2, an object-oriented data model
SIGMOD '88 Proceedings of the 1988 ACM SIGMOD international conference on Management of data
A visual introduction to SQL
Pasta-3's graphical query language: direct manipulation cooperative queries, full expressive power
VLDB '89 Proceedings of the 15th international conference on Very large data bases
Language features for interoperability of databases with schematic discrepancies
SIGMOD '91 Proceedings of the 1991 ACM SIGMOD international conference on Management of data
A relational model of data for large shared data banks
Communications of the ACM
Design environments for high-functionality computer systems
Design environments for high-functionality computer systems
An Object Algebra Approach to Multidatabase Query Decomposition in Donají
Distributed and Parallel Databases
A semantically advanced querying methodology for medical knowledge and decision support
Knowledge media in healthcare
VDB-MR: MapReduce-based distributed data integration using virtual database
Future Generation Computer Systems
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The subject of this research project is the architecture and design of a multidatabase query facility. These databases contain structured data, typical for business applications. Problems addressed are: presenting a uniform interface for retrieving data from multiple databases, providing autonomy for the component databases, and defining an architecture for semantic services.DIRECT is a query facility for heterogeneous databases. The databases and their definitions can differ in their data models, names, types, and encoded values. Instead of creating a global schema, descriptions of different databases are allowed to coexist. A multidatabase query language provides a uniform interface for retrieving data from different databases. DIRECT has been exercised with operational databases that are part of an automated business system.