Results 291 to 300 of about 39,182,227 (344)

A universal relation model for nested relations

1988
The Universal Relation (UR) model has been researched with the ultimate objective to free the user from logical navigation in a relational database. There have been many different suggestions as to how to implement a UR interface. Nested relations have been recently suggested as a way of extending the applicability of the classical relational model. In
Mark Levene, George Loizou
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The Relational Model Is Injective for Multiplicative Exponential Linear Logic

Annual Conference for Computer Science Logic, 2015
We prove a completeness result for Multiplicative Exponential Linear Logic (MELL): we show that the relational model is injective for MELL proof-nets, i.e.
Daniel de Carvalho
semanticscholar   +1 more source

Sort sets in the relational model

Proceedings of the 2nd ACM SIGACT-SIGMOD symposium on Principles of database systems - PODS '83, 1983
The notion ofsort setis introduced here to formalize the fact that certain database relations can be sorted so that two or more columns are simultaneously listed in order. This notion is shown to be applicable in several ways to enhance the efficiency of an implemented database.
Seymour Ginsburg, Richard Hull 0001
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SYNTHESIS OF MODELS RELATED TO TASPINE

Organic Preparations and Procedures International, 1991
Abstract The synthesis of diphenylic compounds related to the alkaloid taspine 1 is reported.
SCARPATI, Maria Luisa, BIANCO, Armandodoriano, R. LO SCALZO   +2 more
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Probabilistic Relational Models

1999
Probabilistic models provide a sound and coherent foundation for dealing with the noise and uncertainty encountered in most real-world domains. Bayesian networks are a language for representing complex probabilistic models in a compact and natural way.
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Statistical relational model

2005
We will outline some of the important problems of extending the relational model for processing statistical data bases. We achieve this by augmenting to relational algebra few more numerical operations without altering the relational algebra. This algebra is referred to as statistical relational algebra.
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Injective Models and Disjunctive Relations

Journal of Logic and Computation, 1993
The main purpose of this paper is to characterize the nonmonotonic inference relations that can be represented by preferential models in which distinct states never satisfy exactly the same formulae (``injective models''). The key tool is the author's concept of ``preferential orderings''.
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The Relational Model

2014
This chapter introduces you to the fundamental principles and concepts upon which subsequent chapters will be built. Discussion advances under the following captions:
Elvis C. Foster, Shripad Godbole
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Relational Models for the Modal Syllogistic*

Journal of Philosophical Logic, 1997
Suppose that for every term \(x\) in Aristotle's syllogistic there are some things that are actually-\(x\), some that are necessarily-\(x\), and some that are possibly-\(x\). Label these extensions \(|x|\), \(|x^\square |\), and \(|x^\lozenge |\). And suppose further that \(|x^\square |\subseteq|x|\subseteq |x^\lozenge |\).
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GRAPHICAL MODELS FOR RELATIONS - Modeling Relational Context

Proceedings of the International Conference on Knowledge Discovery and Information Retrieval, 2011
Tresp, V., Huang, Y., Jiang, X., Rettinger, A.   +3 more
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