Recursive queries are required in many object-oriented database applications. Among them we can mention Bill-Of-Material (BOM), various kinds of networks (transportation, telecommunication, etc.), processing semistructured data (XML, RDF), and so on. The support for recursive queries in current query languages is limited and lacks theoretical foundations. In this paper we present recursive quer...

Characteristics of the signal processing tasks associated with an advanced wireless receiver are well matched to the capabilities offered by CCM technology. Collectively, digital receiver algorithms seem to share the following properties: (a) repetitive operations are performed on huge data sets, (b) the dominant computations are conducive to very deep computational pipelines, (c) a moderate am...

At present, enterprises have urgent needs to conduct an effective and stable statistical analysis on big data. With a view to solving the issue of analysis and processing of big data in respect of enterprise business, this essay proposes a hybrid structure mode based on the MapReduce technology and the parallel database technology, discusses the principle on which the mode is used to realize th...

In this paper, we introduce the concept “team” and incorporate the team query into data language SQL. Existing relational query languages use tuple variables of tables to specify required data. Queries that are expressed by these languages are used to get all the data which satisfy the specified conditions. While a team variable represents a subset of a table, a team query is to retrieve all th...

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