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ICDE
2006
IEEE
213views Database» more  ICDE 2006»
10 years 5 months ago
Optimization of Complex Nested Queries in Relational Databases
Due to the flexible structures of SQL, no general approach works efficiently for all kinds of queries. Some special kinds of queries can be further optimized for better performa...
Bin Cao
VLDB
1991
ACM
141views Database» more  VLDB 1991»
10 years 3 months ago
Efficiency of Nested Relational Document Database Systems
Systems designed for efficient retrieval of conventional data can be very inefficient at retrieving documents. Documents have more complex structure than conventional data, and th...
Justin Zobel, James A. Thom, Ron Sacks-Davis
SIGMOD
2005
ACM
133views Database» more  SIGMOD 2005»
10 years 5 months ago
A Nested Relational Approach to Processing SQL Subqueries
One of the most powerful features of SQL is the use of nested queries. Most research work on the optimization of nested queries focuses on aggregate subqueries. However, the solut...
Bin Cao, Antonio Badia
ICDE
2003
IEEE
148views Database» more  ICDE 2003»
11 years 1 months ago
Efficient Computation of Subqueries in Complex OLAP
Expressing complex OLAP queries using group-by, aggregation, and joins can be extremely difficult. As a result of this, many alternate ways of expressing such queries have been de...
Michael H. Böhlen, Michael O. Akinde
VLDB
1994
ACM
128views Database» more  VLDB 1994»
10 years 3 months ago
From Nested-Loop to Join Queries in OODB
Most declarative SQL-like query languagesfor object-oriented database systems (OOSQL) are orthogonal languages allowing for arbitrary nesting of expressions in the select-, from-,...
Hennie J. Steenhagen, Peter M. G. Apers, Henk M. B...
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