Scalable join processing in a parallel shared-nothing environment requires a partitioning
policy that evenly distributes the processing load while minimizing the size of state …

We present a new interactive data exploration approach, called Semantic Windows (SW), in
which users query for multidimensional" windows" of interest via standard DBMS-style …

Online aggregation provides estimates to the final result of a computation during the actual
processing. The user can stop the computation as soon as the estimate is accurate enough …

Range-aggregate queries are to apply a certain aggregate function on all tuples within given
query ranges. Existing approaches to range-aggregate queries are insufficient to quickly …

Online aggregation (OLA) is an attractive sampling-based technology to response
aggregation queries by an approximate estimate to the final result, with the confidence …

Sampling-based approximate query processing method provides the way, in which the
users can save their time and resources for'Big Data'analytical applications, if the estimated …

Join aggregation is an important operation in database systems to return aggregate
information on the join of two or several tables. Compared with exact query, it is a better …

Data leakage is a leakage which the information's were leaked out unknowingly. Especially
company has partnership with other companies that need to share the information's …

Efficient Processing of Skyline Queries on Static Data Sources, Data Streams and Incomplete
Datasets by Mithila Nagendra A Disse Page 1 Efficient Processing of Skyline Queries on Static …

Distributed data systems are becoming increasingly complex. They interconnect devices (eg
smartphones, tablets, etc.) that are heterogeneous, autonomous, either static or mobile, and …