861 search results - page 44 / 173 » Relational Completeness of Query Languages for Annotated Dat... |
PODS
2010
ACM
15 years 2 months ago
2010
ACM
We investigate a higher-order query language that embeds operators of the positive relational algebra within the simply-typed λ-calculus. Our language allows one to succinctly de...
144
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SIGMOD
2005
ACM
15 years 10 months ago
2005
ACM
This paper describes the overall architecture and design aspects of a hybrid relational and XML database system called System RX. We believe that such a system is fundamental in t...
WCE
2007
14 years 11 months ago
2007
—This paper is concerned with the application of a conversational agent and expert system to provide a natural language interface to a database. Typically, natural language datab...
167
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PODS
2009
ACM
15 years 10 months ago
2009
ACM
We consider the problem of deciding query equivalence for a conjunctive language in which queries output complex objects composed from a mixture of nested, unordered collection ty...
DEXA
1995
Springer
15 years 1 months ago
1995
Springer
- In order to accomplish independence on the logical data organization, a relational DBMS must be capable of interpreting query language sentences which reference attributes belong...