IDEAS
2007
IEEE
13 years 11 months ago
2007
IEEE
A foreign superkey in relational database theory is a set of attributes referring to a superkey of some relation variable. In this paper, the notion of constant references is intr...
IDEAS
2007
IEEE
13 years 11 months ago
2007
IEEE
In this paper we study the problem of deciding whether a regular path query over views in data-integration systems can be re-expressed without recursion. The problem becomes chall...
IDEAS
2007
IEEE
13 years 11 months ago
2007
IEEE
There is an increasing need for an XML query engine that not only searches for exact matches to a query but also returns “query-like” structures. We have designed and develope...
IDEAS
2007
IEEE
13 years 11 months ago
2007
IEEE
Many recent applications deal with data streams, conceptually endless sequences of data records, often arriving at high flow rates. Standard data-mining techniques typically assu...
IDEAS
2007
IEEE
13 years 11 months ago
2007
IEEE
A sliding window join (SWJoin) is becoming an integral operation in every stream data management system. In some streaming applications the increasing volume of streamed data as w...