861 search results - page 9 / 173 » Relational Completeness of Query Languages for Annotated Dat... |
DBPL
2001
Springer
13 years 12 months ago
2001
Springer
Abstract. We address a fundamental question concerning spatio-temporal database systems: “What are exactly spatio-temporal queries?” We define spatio-temporal queries to be co...
VLDB
2003
ACM
14 years 7 months ago
2003
ACM
In data applications such as information integration, there can be limited access patterns to relations, i.e., binding patterns require values to be specified for certain attribut...
ER
2007
Springer
13 years 11 months ago
2007
Springer
The paper presents an unified Description Logic (DL) model for databases. Describing database models using DLs is a fundamental problem in many areas because it turns databases to...
SIGMOD
1999
ACM
13 years 11 months ago
1999
ACM
We address the problem of query rewriting for TSL, a language for querying semistructured data. We develop and present an algorithm that, given a semistructured query q and a set ...
SDMW
2009
Springer
14 years 1 months ago
2009
Springer
In this paper we investigate the feasibility and efficiency of mapping XML data and access control policies onto relational and native XML databases for storage and querying. We de...