Titlebook: MFDBS 91; 3rd Symposium on Mat Bernhard Thalheim,János Demetrovics,H. -D. Gerhard Conference proceedings 1991 Springer-Verlag Berlin Heidel

calumniate

abracadabra

培养

花费

The Nested Interpolation Based Grid File,a new structure for physically organizing a set of multidimensional points. This structure called the Nested Interpolation-Based Grid File (NIBGF) represents a synthesis and an improvement of results obtained in Interpolation-Based Grid Files (IBGF), BANG files, and K-D-B-trees. The data search spac

FORGO

Complexity of recursive production rules execution,nt an approach based on graph modelling. We show on some elementary recursive rules the power of this method. We assume a realistic probabilistic model, i.e. the data distributions of the relations involved may be dependent and non-uniform. Under smooth hypotheses, we introduce a notion of “maximum

Pseudoephedrine

简略

Digest

范例

北极人

Monadic databases with equality,t domain elements are represented by unary predicate symbols and not as constant symbols. We provide a formal system for ME-databases and we prove its soundness and completeness. We give also polynomial algorithms for evaluating elementary queries corresponding to the implication problem on ME-databases.