861 search results - page 4 / 173 » Relational Completeness of Query Languages for Annotated Dat... |
DBPL
1999
Springer
13 years 11 months ago
1999
Springer
We consider IES(SQL), the incremental evaluation system over an SQL-like language with grouping, arithmetics, and aggregation. We show that every second order query is in IES(SQL) ...
ICDT
2007
ACM
14 years 1 months ago
2007
ACM
Moving objects produce trajectories. We describe a data model for trajectories and trajectory samples and an efficient way of modeling uncertainty via beads for trajectory samples....
CL
2000
Springer
13 years 11 months ago
2000
Springer
In this paper, an algorithm for obtaining consistent answers to queries posed to inconsistent relational databases is presented. The algorith is proven to be sound, terminating and...
SOFSEM
2004
Springer
14 years 21 days ago
2004
Springer
Abstract. Research on processing XML documents gained much activity in recent times. XML query languages are mostly based on XPath expressions, which are used to select parts of XM...
VLDB
1987
ACM
13 years 10 months ago
1987
ACM
