Results 71 to 80 of about 36,093 (262)
Factorisation in relational databases
, 2014 We study representation systems for relational data based on relational algebra expressions with unions, products, and singleton relations. Algebraic factorisation using the distributivity of product over union allows succinct representation of many-to-many relationships; further succinctness is brought by sharing repeated subexpressions.
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Derivation of constraints and database relations
, 1996 In this paper we investigate which constraints may be derived from a given set of constraints. We show that, given a set of relations R, all of which are invariant under some set of permutations P, it is possible to derive any other relation which is invariant under P, using only the projection, Cartesian product, and selection operators, together with
David A. Cohen +2 more
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British Educational Research Journal, EarlyView.Abstract Bourdieu's sociological concept of social capital highlights its significance in enabling individuals to access other forms of capital for personal advantage. In the literature on university students' employability, particularly that concerning international and non‐local students, social capital is widely recognised as a key asset, alongside ...
Fang Gao, Thanh Pham
wiley +1 more source
Realization Of Methods Of Comparison Of Sets By Using Relational Dbms Methods.
Ìнформаційні технології в освіті, 2009 The article deals with questions concerning usage of modern DBMS, such as building queries with the "Great Divide" relational division. Various variants of relational division usage are described.
K. Fedorchenko
doaj
Applying self-powered sensor and support vector machine in load energy consumption modeling and prediction of relational database. [PDF]
Sci Rep, 2023 Yang D, Yu J, He Z, Li P, Du X.
europepmc +1 more source
What drives animal responses to high severity fire? The role of functional traits
Biological Reviews, EarlyView.ABSTRACT Fire regimes are changing worldwide, with increases in the frequency, extent, and severity of fires posing growing risks to biodiversity. Fire severity – the degree of habitat alteration following fire – strongly influences both immediate survival and long‐term recovery of fauna.
Grace A. Vielleux +3 more
wiley +1 more source
SpecDB: A relational database for archiving biomolecular NMR spectral data. [PDF]
J Magn Reson, 2022 Fraga KJ +7 more
europepmc +1 more source
Relational Databases and Bell’s Theorem [PDF]
, 2013 Our aim in this paper is to point out a surprising formal connection, between two topics which seem on face value to have nothing to do with each other: relational database theory, and the study of non-locality and contextuality in the foundations of quantum mechanics.
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Translating Circularity Into Strategy: A Governance Meta‐Capability Framework
Business Strategy and the Environment, EarlyView.ABSTRACT Firms struggle to transition to circular economy (CE) models, often citing external barriers. Yet some firms succeed, whereas others fail: Why? We argue that success depends on a specific governance capability—a meta‐capability that allows firms to (1) sense and strategically reframe CE imperatives, (2) seize opportunities by aligning diverse ...
Felix Carl Schultz +1 more
wiley +1 more source
Developing a Relational Database for Best Practice Data Management: The Turn Everyone and Move for Ulcer Prevention Database. [PDF]
Comput Inform Nurs, 2023 Alderden JG +7 more
europepmc +1 more source