448 search results - page 40 / 90 » Queries and Constraints on Semi-structured Data |
156
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PODS
2009
ACM
15 years 10 months ago
2009
ACM
The paper investigates the question of whether a partially closed database has complete information to answer a query. In practice an enterprise often maintains master data Dm, a ...
77
Voted
SAC
2004
ACM
15 years 3 months ago
2004
ACM
Integrity constraints are valuable tools for enforcing consistency of data in a database. Global integrity constraints ensure integrity and consistency of data spanning multiple d...
158
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VLDB
2002
ACM
15 years 10 months ago
2002
ACM
The view selection problem is to choose a set of views to materialize over a database schema, such that the cost of evaluating a set of workload queries is minimized and such that ...
ICDE
2007
IEEE
15 years 4 months ago
2007
IEEE
Retrieval queries that combine structural constraints with keyword search represent a significant challenge to XML data management systems. Queries are expected to be answered as...
189
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ICDE
2008
IEEE
15 years 11 months ago
2008
IEEE
Many new applications that involve decision making need online (i.e., OLAP-styled) preference analysis with multidimensional boolean selections. Typical preference queries includes...