83 search results - page 3 / 17 » Factorizing Complex Predicates in Queries to Exploit Indexes |
XSYM
2004
Springer
13 years 11 months ago
2004
Springer
XML indices are essential for efficiently processing XML queries which typically have predicates on both structures and values. Since the number of all possible structural and val...
SIGMOD
2007
ACM
14 years 6 months ago
2007
ACM
Good cardinality estimates are critical for generating good execution plans during query optimization. Complex predicates, correlations between columns, and user-defined functions...
WEBDB
2001
Springer
13 years 10 months ago
2001
Springer
Indexing schemes for semistructured data have been developed in recent years to optimize path query processing by summarizing path information. However, most of these schemes can ...
SIGMOD
2003
ACM
14 years 6 months ago
2003
ACM
Object-oriented and object-relational DBMS support setvalued attributes, which are a natural and concise way to model complex information. However, there has been limited research...
ICDE
2010
IEEE
13 years 11 months ago
2010
IEEE
— Research on query optimization has traditionally focused on exhaustive enumeration of an exponential number of candidate plans. Alternatively, heuristics for query optimization...