Many works have focused, for over twenty five years, on the integration of the time dimension in databases (DB). However, the standard SQL3 does not yet allow easy definition, manipulation and querying of temporal DBs. In this paper, we study how we can simplify querying and manipulating temporal facts in SQL3, using a model that integrates time in a native manner. To do this, we propose new ke...

A network of peer database management systems differs from conventional multidatabase systems by assuming absence of any central control, no global schema, transient connection of participating peer DBMSs, and evolving coordination among databases. We describe distributed triggers to support data coordination in this setting. The execution of our triggers requires coordination among the involve...

This paper gives a new flavor of what Peter Jagers and his co-authors call ‘the path to extinction’. In a neutral population with constant size N , we assume that each individual at time 0 carries a distinct type, or allele. We consider the joint dynamics of these N alleles, for example the dynamics of their respective frequencies and more plainly the nonincreasing process counting the number o...

Bei der Anwendungsentwicklung werden komponentenbasierte Methoden bereits erfolgreich eingesetzt. Beim objekt-relationalen Schemaentwurf ist dies allerdings noch nicht der Fall. Dies liegt u.a. daran, dass Konzepte, die einen solchen Entwurf unterstützen, noch nicht im Standard SQL:1999 enthalten sind. In diesem Aufsatz stellen wir Ansätze zur Klassifikation verschiedener Module in objekt-relat...

This paper concerns the forecasting of seasonal intraday time series. An extension of Holt-Winters exponential smoothing has been proposed that smoothes an intraday cycle and an intraweek cycle. A recently proposed exponential smoothing method involves smoothing a different intraday cycle for each distinct type of day of the week. Similar days are allocated identical intraday cycles. A limitati...

Entrepreneurial ventures rely not only on founders, but also on “joiners” – startup employees who are attracted to entrepreneurship but do not want to be founders themselves. Drawing upon both individual and contextual-level perspectives of entrepreneurship, we examine how interests in being a founder or a joiner form prior to the first career transition. We find that individuals with founder a...

Sadrzadeh et al (2013) present a compositional distributional analysis of relative clauses in English in terms of the Frobenius algebraic structure of finite dimensional vector spaces. The analysis relies on distinct type assignments and lexical recipes for subject vs object relativisation. The situation for Dutch is different: because of the verb final nature of Dutch, relative clauses are amb...