In this paper, we present BlinkDB, a massively parallel, approximate query engine for
running interactive SQL queries on large volumes of data. BlinkDB allows users to trade-off …

摘要作为一种全新的互联网应用模式, 云计算在工业界和学术界备受关注.
人们可以通过终端设备便捷地获取云端服务, 并以按需使用的方式获得存储资源 …

Modern database management systems (DBMS) have been designed to efficiently store,
manage and perform computations on massive amounts of data. In contrast, many existing …

Analytics over the increasing quantity of data stored in the Cloud has become very
expensive, particularly due to the pay-as-you-go Cloud computation model. Data scientists …

As of 2005, sampling has been incorporated in all major database systems. While efficient
sampling techniques are realizable, determining the accuracy of an estimate obtained from …

Online aggregation is an attractive sampling-based technology to response aggregation
queries by an estimate to the final result, with the confidence interval becoming tighter over …

Sensors, mobile devices and social platforms generate an immense amount of stream data
in various formats and schemata. For these areas, the idea of Linked Stream Data is to …

In online aggregation, a system constantly maintains an estimate of the final answer to an
aggregate query throughout execution, along with statistically meaningful bounds for the …

Searching keywords in databases is complex task than search in files. Information Retrieval
(IR) process search keywords from text files and it is very important that queering keyword to …

The traditional statistical assumption for interpreting histograms and justifying approximate
query processing methods based on them is that all elements in a bucket have the same …