SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Dynamic plan migration is concerned with the on-the-fly transition from one continuous query plan to a semantically equivalent yet more efficient plan. Migration is important for ...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
As more and more query processing work can be done in main memory, memory access is becoming a significant cost component of database operations. Recent database research has show...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Recently, the Web has been rapidly "deepened" by many searchable databases online, where data are hidden behind query forms. For modelling and integrating Web databases,...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Increasing popularity of XML in recent years has generated much interest in query processing over graph-structured data. To support efficient evaluation of path expressions, many ...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Graph has become increasingly important in modelling complicated structures and schemaless data such as proteins, chemical compounds, and XML documents. Given a graph query, it is...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Subsequence similarity matching in time series databases is an important research area for many applications. This paper presents a new approximate approach for automatic online s...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
We present several methods for mining knowledge from the query logs of the MSN search engine. Using the query logs, we build a time series for each query word or phrase (e.g., `Th...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Peer data management systems (PDMS) offer a flexible architecture for decentralized data sharing. In a PDMS, every peer is associated with a schema that represents the peer's...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
Existing methods for prediction in spatio-temporal databases assume that objects move according to linear functions. This severely limits their applicability, since in practice mo...
SIGMOD
2004
ACM
14 years 4 months ago
2004
ACM
We present a technique that masks failures in a cluster to provide high availability and fault-tolerance for long-running, parallelized dataflows. We can use these dataflows to im...