Schema Evolution publication categorizer

... errors and thus data structures must change accordingly in order to address the new requirements. A consequence of schema evolution is ...

Publication - cat - 04/17/2013 - 12:27 - 0 comments - 0 attachments

... problems. For instance, incorporating a new program in a legacy database application can create an integrity mismatch, since the ... different (e.g. standard file model versus OO model). In addition, neither the legacy DBMS (too weak to address integrity issues ...

Publication - huliganka - 04/17/2013 - 12:05 - 0 comments - 1 attachment

... with the use of program understanding methods and tools. In this paper, we focus on the program slicing technique and we show how it can ...

Publication - acleve - 04/17/2013 - 12:05 - 0 comments - 0 attachments

... Workshop on Knowledge Discovery in Life Science Literature URL:  ... 483.55 KB In recent years many biomedical ontologies have been developed and many of ... able to use multiple ontologies they have to be aligned. In this paper we propose strategies for aligning ontologies based on life ...

Publication - cat - 04/17/2013 - 11:49 - 0 comments - 1 attachment

... schema evolution, standard information systems currently in use raise challenging evolution problems. This paper examines database ... and describe a CASE tool that can assist developers in their task of system evolution. We illustrate our approach with Biomaze, a ...

Publication - huliganka - 04/17/2013 - 11:38 - 0 comments - 1 attachment

... and schema evolution. The novelty of this paper consists in a method for automatic generation of automappings (automorphisms) from key ... mappings is discussed on a scenario of data exchange in a P2P setting. (no paper type, Workshop, Sch. Matching/Mapping) ...

Publication - huliganka - 04/17/2013 - 11:27 - 0 comments - 0 attachments

... of semantical concepts, but only technical schema changes. In this paper we present our mapping of database schemas to ontologies, ...

Publication - cat - 04/17/2013 - 11:05 - 0 comments - 0 attachments

... a priori referenced by the local ontologies embedded in the various sources. When the shared ontology evolves over the time, the ... system turns to an asynchronous versioning problem. In this paper, we propose an approach and a model to deal with this problem in ...

Publication - cat - 04/17/2013 - 09:49 - 0 comments - 0 attachments

... groups of experts, actual ontology users are not involved in the development process. Such an individual approach in creating ontologies, lead to a weak community grounding. On the other hand, ...

Publication - cat - 04/17/2013 - 03:27 - 0 comments - 1 attachment

... of the integration architecture or mapping formalism. In this paper we provide a task model for schema integration. We use this breakdown to motivate a workbench for schema integration in which multiple tools share a common knowledge repository. In particular, the ...

Publication - cat - 04/17/2013 - 03:16 - 0 comments - 1 attachment

... formal representation of a domain modeling the entities in the domain and their relations. When a domain is represented by multiple ... there is need for creating mappings among these ontologies in order to facilitate the integration of data annotated with and reasoning ...

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 ... patterns. The introduced ontology evolution patterns in conjunction with appropriate data migration algorithms enable the ...

Publication - hartung - 04/17/2013 - 02:27 - 0 comments - 1 attachment

... 272.74 KB In a semantic environment data is described by ontologies and heterogeneity ... to be created, most probably during design-time, and used in various run-time processes. Such alignments describe a set of mappings ... show how instance data from one ontology can be expressed in terms of another ontology. We propose a formal model for mapping creation. ...

Publication - huliganka - 04/16/2013 - 23:49 - 0 comments - 1 attachment

... heterogeneous data sources has been extensively studied in data integration applications. However, the increasing number of tools ... to support. These mappings are usually directly coded in executable transformations using arithmetic expressions. And there is no ...

Publication - huliganka - 04/16/2013 - 23:27 - 0 comments - 1 attachment

... evolution, an area which has recently gained much interest in both research and practice. (Schema Evolution, Sigmod Record, Survey / ...

Publication - admin - 04/16/2013 - 22:49 - 0 comments - 1 attachment

... warehousing systems are fully operational, a crucial role in preserving their up-to-dateness is played by the ability to manage the ... that the data warehouse (DW) schema undergoes over time in response to evolving business requirements. In this paper we propose an ...

Publication - cat - 04/16/2013 - 22:05 - 0 comments - 1 attachment

... These MDE approaches have some concepts and techniques in common such as modeling, metamodels and model transformation. However, ... should be envisaged such as metamodel matching. In this paper, we discuss some issues and provide some insights into ...

Publication - huliganka - 04/16/2013 - 21:06 - 0 comments - 1 attachment

... algorithms for large schemas prohibitively inefficient. In this paper we propose a clustering based technique for improving the ... efficiency and effectiveness. The technique can be used in addition to other optimization techniques. In the paper we describe the ...

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

... evolve to reflect changes to the universe it represents. In existing systems, user transactions get blocked during complex schema ... Blocking user transactions is not an option in systems with very high availability requirements, like operational telecom ...

Publication - cat - 04/16/2013 - 19:05 - 0 comments - 1 attachment

... events, changes to the user's requirements, and mistakes in the initial design. In this paper, we present a novel algorithm called DTD-Diff to detect the ...

Publication - cat - 04/16/2013 - 14:16 - 0 comments - 1 attachment

... queries and applications, mainly due to the fact that, in most cases, their role as integral parts of the environment is not given the ... the queries are not designed to handle database evolution. In this paper, we introduce a graph-based model that uniformly captures ...

Publication - gpapas - 04/16/2013 - 07:38 - 0 comments - 1 attachment

... Web databases, which can dynamically provide information in response to user queries. To help users submit queries to different Web ... with Last Name while it is rarely co-present with Author in the Books domain. Thus, we design a count-based greedy algorithm to identify ...

Publication - cat - 04/16/2013 - 06:49 - 0 comments - 0 attachments

... targeted to find 1:1 mappings. However, block mappings are in fact more pervasive. In this paper, we discuss the block matching problem and suggest that both the ...

Publication - cat - 04/16/2013 - 06:05 - 0 comments - 0 attachments

... choreographies. If respective modifications are applied in an uncontrolled manner, inconsistencies or errors might occur in the sequel. In particular, modifications of private processes performed by a ...

Publication - cat - 04/15/2013 - 20:27 - 0 comments - 0 attachments