Schema Evolution publication categorizer

... ontologies akin to maintaining versions of software code in large software projects. Versioning systems for software code provide ...

Publication - cat - 04/17/2013 - 07:38 - 0 comments - 0 attachments

... but there are still few and partial solu- tions. In general, given an information source, different translations can be defined for the same target model. In this work, we first identify gen- eral properties that “good” ... search. These techniques have been implemented in a tool for the man- agement of heterogeneous data models and some ...

Publication - paolop - 04/17/2013 - 04:38 - 0 comments - 1 attachment

... 210.74 KB Ontologies are being used nowadays in many areas, including bioinformatics. One of the issues in ontology research is the aligning and merging of ontologies. Tools have ...

Publication - cat - 04/16/2013 - 21:38 - 0 comments - 1 attachment

... the most important of which is that schemas are placed in a partial order that has bounded joins. This means that the merging ... that the merge of schemas is independent of the order in which they are considered --- a property not possessed by existing ...

Publication - huliganka - 04/16/2013 - 20:38 - 0 comments - 1 attachment

... A subtle problem of schema integration is considered in its general form, not bound to any particular category of schemas. The ... theory are established that apply to integrity problems in schema integration. The theory is illustrated by a particular category of ...

Publication - huliganka - 04/16/2013 - 19:27 - 0 comments - 1 attachment

... of interest arises when S is the class of all instances, in which case an S-inverse is a global inverse. We focus on the important ... we show how to construct an S-inverse when one exists. In particular, we show how to construct a global inverse when one exists. ...

Publication - cat - 04/16/2013 - 18:27 - 0 comments - 1 attachment

... is based on a classification of the constructs used in the known data model into a limited set of types Then on the basis of ... deriving \"good\" translations between schemes and more in general between models Finally we define the architecture and the ...

Publication - huliganka - 04/16/2013 - 15:49 - 0 comments - 1 attachment

... 100 - 499 The basic assumption in model engineering (MDE) is to consider models as first class entities. One of the most important kinds of models in MDE approaches are transformation models. Transformation models define ...

Publication - huliganka - 04/16/2013 - 07:38 - 0 comments - 0 attachments

... merging, also called view integration, is a key problem in conceptual modeling. Large models are often constructed and accessed by ... sources and to the merge assumptions related to them. In this paper, we present a framework for merging incomplete and inconsistent ...

Publication - cat - 04/16/2013 - 07:05 - 0 comments - 0 attachments

... form of the constrained distance previously reported in [27]. When applied to ordered trees, the degree-2 distance is a ... and insertions occur at leaves i.e., with degree 1.) In this extended abstract, we present algorithms for computing the degree-2 ...

Publication - huliganka - 04/16/2013 - 06:16 - 0 comments - 0 attachments

... need to interrelate different life science ontologies in order to facilitate data integration or semantic data analysis. Ontology ... linguistic and structural similarity of their concepts. In this paper we investigate an indirect computation of ontology mappings that ...

Publication - hartung - 04/16/2013 - 02:05 - 0 comments - 0 attachments

... 10 - 49 In this chapter, three semantics-based schema conversion methods are presented: ...

Publication - cat - 04/16/2013 - 01:05 - 0 comments - 0 attachments

... by a set of intermediate model meta-classes (organized in the form of a directed acyclic graph (DAG) to achieve extensibility y), ... of these meta-classes are used to describe a schema in a given data model. The proposed approach supports dynamic meta-schema ...

Publication - huliganka - 04/16/2013 - 00:49 - 0 comments - 0 attachments

... Venue:  In Sixth IFIP TC-2 Working Conf. on Data Semantics (DS-6), Atlanta, Georgia, ... 10 - 49 In this paper we study the problem of translating schemes between different ...

Publication - huliganka - 04/15/2013 - 23:16 - 0 comments - 0 attachments

... little attention so far. A key problem is that there is in general no single best solution for a merge task and that merging may either ...

Publication - cat - 04/15/2013 - 21:27 - 0 comments - 1 attachment

... how to generate them, and prove that schemas and views in this normal form satisfy our requirements. The view definitions in our normal form use stylized GLAV mappings, for which query rewriting is ...

Publication - erhard - 04/15/2013 - 20:16 - 0 comments - 1 attachment