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Schema Evolution
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... Mesiti, Marco; Celle, Roberto; Sorrenti, Matteo A.; Guerrini, Giovanna Author: ... accordingly in order to address the new requirements. A consequence of schema evolution is that documents instance of the original ...
Publication - cat - 04/17/2013 - 12:27 - 0 comments - 0 attachments
... severe heterogeneity problems. For instance, incorporating a new program in a legacy database application can create an integrity mismatch, since the ...
Publication - huliganka - 04/17/2013 - 12:05 - 0 comments - 1 attachment
... Cleve, A; Henrard, J.; Hainaut, JL; Author: Cleve, A Henrard, J ...
Publication - acleve - 04/17/2013 - 12:05 - 0 comments - 0 attachments
... ontologies based on life science literature. We propose a basic algorithm as well as extensions that take the structure of the ...
Publication - cat - 04/17/2013 - 11:49 - 0 comments - 1 attachment
... to database schemas, to data and to programs through a general strategy. This strategy requires the documentation of database ... techniques. Our approach, called DB-MAIN, relies on a generic database model and on transformational paradigm that states that ... can be modeled by schema transformations. Indeed, a transformation provides both structural and instance mappings that formally ...
Publication - huliganka - 04/17/2013 - 11:38 - 0 comments - 1 attachment
... schema evolution. The novelty of this paper consists in a method for automatic generation of automappings (automorphisms) from key ... some missing or incomplete data may be inferred. A well-defined executable semantics for mappings and operations on mappings ...
Publication - huliganka - 04/17/2013 - 11:27 - 0 comments - 0 attachments
... Kupfer, A Eckstein, S ... integration and meta-databases, by connecting databases on a semantical level. Still, everything fails when one of the database schemas ...
Publication - cat - 04/17/2013 - 11:05 - 0 comments - 0 attachments
... autonomous databases. To automate the integration process, a number of these systems suppose the existence of a shared domain ontology a priori referenced by the local ontologies embedded ...
Publication - cat - 04/17/2013 - 09:49 - 0 comments - 0 attachments
... KB The Semantic Web mission is to enable a better organization of the Web content to improve the searching, navigation ... machines, the process of creating and maintaining it is a social one: only people, for example, have necessary skills to create and ...
Publication - cat - 04/17/2013 - 03:27 - 0 comments - 1 attachment
... Mork, P; Rosenthal, A; Seligman, L; Korb, J; Samuel, K ... Rosenthal, A Seligman, L ...
Publication - cat - 04/17/2013 - 03:16 - 0 comments - 1 attachment
... 116.03 KB An ontology is a formal representation of a domain modeling the entities in the domain and their relations. When a domain is represented by multiple ontologies, there is need for creating ...
Publication - hartung - 04/17/2013 - 02:49 - 0 comments - 1 attachment
... changes are aggregated to compound changes, resulting in a hierarchy of changes, thus facilitating the human reviewing process on ...
Publication - hartung - 04/17/2013 - 02:27 - 0 comments - 1 attachment
... Mocan, A Cimpian, E ... 272.74 KB In a semantic environment data is described by ontologies and heterogeneity ... in various run-time processes. Such alignments describe a set of mappings between the source and target ontologies, where the mappings ...
Publication - huliganka - 04/16/2013 - 23:49 - 0 comments - 1 attachment
... and reuse complex mappings. In this paper we propose a novel approach to capture different kinds of complex mappings using ... our approach, we provide an experimentation with a real world scenario using bug tracking tools. (inria.fr, univ-nantes.fr) ...
Publication - huliganka - 04/16/2013 - 23:27 - 0 comments - 1 attachment
... Rahm, Erhard; Bernstein, Philip A. Author: ... 75.57 KB We briefly motivate and present a new online bibliography on schema evolution, an area which has recently ...
Publication - admin - 04/16/2013 - 22:49 - 0 comments - 1 attachment
... of data warehousing systems are fully operational, a crucial role in preserving their up-to-dateness is played by the ability to ... spanning multiple schema versions. First, we introduce a representation of DW schemata as graphs of simple functional dependencies, ...
Publication - cat - 04/16/2013 - 22:05 - 0 comments - 1 attachment
... Lopes, D.; Hammoudi, S.; de Souza, J.; Bontempo, A. Author: ... J Bontempo, A Year: ...
Publication - huliganka - 04/16/2013 - 21:06 - 0 comments - 1 attachment
... name, data-type, and structure similarity). Seen from a broader perspective, the schema matching problem is a combinatorial problem with an exponential complexity. This makes the naive ...
Publication - huliganka - 04/16/2013 - 20:16 - 0 comments - 1 attachment
... 457.75 KB A database schema should be able to evolve to reflect changes to the universe ... requirements, like operational telecom databases. A non-blocking transformation framework is therefore needed. A method for performing non-blocking full outer join and split transformations, ...
Publication - cat - 04/16/2013 - 19:05 - 0 comments - 1 attachment
... 512.25 KB The DTD of a set of XML documents may change due to many reasons such as changes to the ... in the initial design. In this paper, we present a novel algorithm called DTD-Diff to detect the changes to DTDs that defines the structure of a set of XML documents. Such change detection tool can be useful in several ...
Publication - cat - 04/16/2013 - 14:16 - 0 comments - 1 attachment
... to handle database evolution. In this paper, we introduce a graph-based model that uniformly captures relations, views, constraints and ...
Publication - gpapas - 04/16/2013 - 07:38 - 0 comments - 1 attachment
... needs to be addressed. To solve this problem, we propose a new complex schema matching approach, Holistic Schema Matching (HSM). By ... with Author in the Books domain. Thus, we design a count-based greedy algorithm to identify which attributes are more likely to ...
Publication - cat - 04/16/2013 - 06:49 - 0 comments - 0 attachments
... 10 - 49 Ontology matching is a crucial task to enable interoperation between Web applications using ... quality should be considered in block matching. We propose a novel partitioning-based approach to address the block matching issue. It ...
Publication - cat - 04/16/2013 - 06:05 - 0 comments - 0 attachments
... Rinderle, S.; Wombacher, A.; Reichert, M. Author: ... Wombacher, A Reichert, M ...
Publication - cat - 04/15/2013 - 20:27 - 0 comments - 0 attachments