Titlebook: Datalog in Academia and Industry; Second International Pablo Barceló,Reinhard Pichler Conference proceedings 2012 Springer-Verlag Berlin He

孤獨(dú)無助

CEDE

法官

microscopic

Tackling the Corruption Epidemic in Nigeriarograms. We begin with a model-theoretic semantics for . and introduce the ., which captures non-deterministic eventual outcomes of distributed programs. After showing the question of confluence undecidable for ., we identify restricted sub-languages that guarantee confluence while providing adequat

恃強(qiáng)凌弱的人

徹底檢查

https://doi.org/10.1007/978-3-030-90606-1 satisfies the integrity constraints specified by: TGDs (Tuple Generating Dependencies), which are universal quantified formulas with additional existential quantifiers, and EGDs (Equality Generating Dependencies), which are universal quantified formulas enforcing the equality of two variables. This

Preamble

https://doi.org/10.1007/978-3-030-90606-1 projects provide a relational algebra-based programming interface to Hadoop, we argue that a natural extension is to add recursion to support scalable social network analysis, internet traffic analysis, and general graph query. We implement semi-naive evaluation in Hadoop, then apply a series of op

geometrician

Nobumichi Teramura,Luke Nottage,Bruno Jetinroposed for expressing continuous queries on data streams. However, while relational databases were built on the solid bedrock of logic, the same cannot be said for DSMS. Thus, a logic-based reconstruction of DSMS languages and their unique computational model is long overdue. Indeed, the banning of

musicologist

Mumble

Magic-Sets for , with Existential Quantifiersorate the Magic-Sets method in .., a system supporting .. Finally, we carry out an experiment assessing the positive impact of Magic-Sets on .., and the effectiveness of the enhanced .. system compared to a number of state-of-the-art systems for ontology-based query answering.