995 search results - page 1 / 199 » Optimization of Complex Nested Queries in Relational Databas... |
ICDE
2006
IEEE
13 years 10 months ago
2006
IEEE
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...
VLDB
1991
ACM
13 years 7 months ago
1991
ACM
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...
SIGMOD
2005
ACM
13 years 9 months ago
2005
ACM
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...
ICDE
2003
IEEE
14 years 5 months ago
2003
IEEE
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...
VLDB
1994
ACM
13 years 8 months ago
1994
ACM
Most declarative SQL-like query languagesfor object-oriented database systems (OOSQL) are orthogonal languages allowing for arbitrary nesting of expressions in the select-, from-,...