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SIGMOD
2006
ACM
15 years 10 months ago
2006
ACM
We study the problem of finding efficient equivalent viewbased rewritings of relational queries, focusing on query optimization using materialized views under the assumption that ...
DEBU
2007
14 years 10 months ago
2007
An indexing model is the heart of an Information Retrieval (IR) system. Data structures such as term based inverted indices have proved to be very effective for IR using vector sp...
DBKDA
2009
IEEE
15 years 1 months ago
2009
IEEE
Software systems in health care, such as disease and medical-record management, or financial applications, such as customer relationship and portfolio management, have very often...
GVD
2001
14 years 11 months ago
2001
A flexible method to store XML documents in relational or object-relational databases is presented that is based on an adaptable fragmentation. Whereas most known approaches decom...
LATA
2009
Springer
15 years 4 months ago
2009
Springer
Introducing priorities on rules in rewriting increases their expressive power and helps to limit computations. Priority rewriting is used in rule-based programming as well as in f...