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This workaddresses the problem of continuous query processing over infinite data streams. The paper defines new semantics for continuous queries and describes a continuous query processing system based on the concepts of continuous computations and online algorithms. A new programming control structure called as Continuous Iterator is proposed for implementation of continuous computations. The paper...
This paper presents an enhanced extension of the Vague Query System (VQS) [14], [15] to solve complex vague queries more efficiently and generally. The VQS is an extension to conventional database systems and can work on top of them to return records semantically close to user’s query. It represents semantic information of arbitrary attributes by mapping them to the Euclidean space and this information...
Intra-query parallelism is a well-established mechanism for achieving high performance in (object-) relational database systems. However, the methods have yet not been applied to the upcoming field of multidimensional array databases. Specific properties of multidimensional array data require new parallel algorithms. This paper presents a number of new techniques for parallelizing queries in multidimensional...
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