VLDB
1994
ACM
14 years 3 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-,...
BTW
2003
Springer
14 years 4 months ago
2003
Springer
Abstract: Optimization of nested queries, in particular finding equivalent “flattened” queries for queries that employ the SQL sub-query construct, has been researched extensiv...
IDEAS
2003
IEEE
14 years 4 months ago
2003
IEEE
In the past few years, much attention has been paid to the study of semistructured data, i.e., data with irregular, possibly unstable, and rapidly changing structure, and, in part...
SIGMOD
2005
ACM
14 years 4 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
2007
IEEE
15 years 16 days ago
2007
IEEE
Optimizing nested queries is an intricate problem. It becomes even harder if in a nested query the linking predicate or the correlation predicate occurs disjunctively. We present ...