Model Driven Development (MDD) approach is often used to model application data and behavior by a Platform Independent Model (PIM) and to generate Platform Specific Models (PSMs) and even the source code by model transformations. However, these transformations usually omit constraints of the binary association multiplicities, especially the source class optionality constraint. This paper is an ...

This paper deals with the transformation of binary relationships from Platform Independent Model (PIM) in UML to Platform Specific Model (PSM) for relational databases from the point of view of Model Driven Development (MDD). The paper summarizes the transformation of a binary relationship with multiplicity constraints and focuses on problems of the current approach for such transformations. In...

Grefen, P.W.P.J. and P.M.G. Apers, Integrity control in relational database systems An overview, Data & Knowledge Engineering 10 (1993) 187-223. This paper gives an overview of research regarding integrity control or integrity constraint handling in relational database management systems. The topic of constraint handling is discussed from two points of view. First, constraint handling is discus...

The solutions of the partial realization problem have to satisfy a finite number of interpolation conditions at 1. The minimal degree of an interpolating deterministic system is called the algebraic degree or McMillan degree of the partial covariance sequence and is easy to compute. The solutions of the partial stochastic realization problem have to satisfy the same interpolation conditions and...

Variation across talkers in the acoustic-phonetic realization of speech sounds is a pervasive property of spoken language. The present study provides evidence that variation across talkers in the realization of American English stop consonants is highly structured. Positive voice onset time (VOT) was examined for all six word-initial stop categories in isolated productions of CVC syllables and ...

Abstract This study considers structural optimization under a reliability constraint, in which the input distribution is only partially known. Specifically, when it known that expected value vector and variance-covariance matrix of belong to given convex set, required failure probability structure should be no greater than specified target for any realization distribution. We demonstrate this d...

Topological Dependency Grammar (TDG) is a lexicalized dependency grammar formalism, able to model languages with a relatively free word order. In such languages, word order variation often has an important function: the realization of information structure. The paper discusses how to integrate information structure into TDG, and presents a constraint-based approach to modelling information stru...

The procedure of reducing of canonical field degrees of freedom for a system of charged particles plus electromagnetic field in the constraint Hamiltonian formalism is developed up to the first order in the coupling constant expansion. The canonical realization of the Poincaré algebra in the terms of physical variables is found. The relation between covariant and physical particle variables in ...

Database caching supports declarative query processing close to the application. Using a full-fledged DBMS as cache manager, it enables the evaluation of specific project-select-join queries in the cache. In this paper, we propose significant improvements and optimizations – as compared to the well-known DBCache approach – that make our caching concept truly adaptive. Furthermore, we describe a...

We explore how machine learning can be employed to learn rulesets for the traditional modules of content planning and surface realization. Our approach takes advantage of semantically annotated corpora to induce preferences for content planning and constraints on realizations of these plans. We applied this methodology to an annotated corpus of indicative summaries to derive constraint rules th...