This article describes query processing in the DBO database system. Like other database
systems designed for ad hoc analytic processing, DBO is able to compute the exact answers …

Sketching techniques provide approximate answers to aggregate queries both for data-
streaming and distributed computation. Small space summaries that have linearity …

Peer Data Management Systems (Pdmss) are a novel, useful, but challenging paradigm for
distributed data management and query processing. Conventional integrated information …

We consider the problem of creating a sample view of a database table. A sample view is an
indexed materialized view that permits efficient sampling from an arbitrary range query over …

Perhaps the most flexible synopsis of a database is a uniform random sample of the data;
such samples are widely used to speed up the processing of analytic queries and data …

Sampling is now a very important data management tool, to such an extent that an interface
for database sampling is included in the latest SQL standard. In this article we reconsider in …

We demonstrate our prototype of the DBO database system. DBO is designed to facilitate
scalable analytic processing over large data archives. DBO's analytic processing …

Random sampling is one of the most fundamental data management tools available.
However, most current research involving sampling considers the problem of how to use a …

Aggregation queries are performed by first identifying outlier values, aggregating the outlier
values, and sampling the remaining data after pruning the outlier values. The sampled data …

Stream-based data management enables the efficient analysis and processing of large
volumes of data in distributed environments. This thesis presents network-aware …