2987 search results - page 122 / 598 » Multiobjective Query Optimization |
111
click to vote
VLDB
2004
ACM
15 years 7 months ago
2004
ACM
PIVOT and UNPIVOT, two operators on tabular data that exchange rows and columns, enable data transformations useful in data modeling, data analysis, and data presentation. They ca...
109
click to vote
PVLDB
2008
15 years 1 months ago
2008
Unlike traditional database queries, keyword queries do not adhere to predefined syntax and are often dirty with irrelevant words from natural languages. This makes accurate and e...
156
click to vote
SIGMOD
2009
ACM
16 years 1 months ago
2009
ACM
Commercial database systems expose query hints to fix poor plans produced by the query optimizer. However, current query hints are not flexible enough to deal with a variety of no...
88
Voted
VLDB
1999
ACM
15 years 5 months ago
1999
ACM
The problem of nding the best answers to a query quickly, rather than nding all answers, is of increasing importance as relational databases are applied in multimedia and decision...
111
click to vote
PODS
2001
ACM
16 years 1 months ago
2001
ACM
The need to search for complex and recurring patterns in database sequences is shared by many applications. In this paper, we discuss how to express and support efficiently sophis...