... KB We examine the problem of type evolution in an object-oriented database environment. Type definitions are persistent objects in the database and as such may be modified and shared. The effects of changing ...
Publication - cat - 06/15/2023 - 14:51 - 0 comments - 1 attachment
... integration and schema evolution into one framework. In previous work we have developed a general framework to support schema transformation and integration in heterogeneous database architectures. Here we show how this framework also ...
Publication - cat - 09/13/2022 - 17:45 - 0 comments - 0 attachments
... We are concerned by schema evolution in Object Oriented Databases (OODB) that is processed by a modification on the ... a new categorization of the different modifications in three categories : primitive, composite and complexe modifications. On ...
Publication - cat - 07/03/2022 - 23:42 - 0 comments - 0 attachments
... and extension) are available. The strategy of evolution in which our architecture is based is that of lsquoforward database ... down to the logical schema and to the extension. In order to put into practice this strategy, each component of a database is ... a translation information system is considered in order to manage the translation of conceptual elements into logical schema ...
Publication - cat - 04/17/2013 - 13:27 - 0 comments - 1 attachment
... on a logical level (e.g. OLAP systems) are often used in data warehouse environments. The user requirements in these dynamic application areas are subject to frequent changes. This ...
Publication - cat - 04/17/2013 - 12:49 - 0 comments - 1 attachment
... Current view technology supports only static views in the sense that views become undefined and hence obsolete as soon as the ... view definitions to be dynamically evolved to keep them in synch with evolving ISs. We present in this paper a general strategy for the ...
Publication - cat - 04/17/2013 - 12:27 - 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
... Generative and Transformational Techniques in Software Engineering, Lecture Notes in Computer Science 4143, 2006 URL: ...
Publication - acleve - 04/17/2013 - 11:38 - 0 comments - 1 attachment
... cost and effort required for maintaining the federation in a consistent state after its launch. If only human intervention is to be ... of change at both local and federal conceptual levels in interoperating database systems. The basis for the model is the exploitation ...
Publication - cat - 04/17/2013 - 10:05 - 0 comments - 0 attachments
... DBRE is proposed as a two-phase process consisting in recovering the DBMSdependent data structures (data structure extraction) then in recovering their semantics (data structure conceptualization). The second ...
Publication - cat - 04/17/2013 - 09:38 - 0 comments - 1 attachment
... science literature, Amazon product taxonomy, etc.). As in heterogenous communities users typically will use different parts of such ... between own preferences and the one of other people. In this paper we adapt a collaborative filtering recommender system to assist ...
Publication - erhard - 04/17/2013 - 09:27 - 0 comments - 0 attachments
... and schema objects is badly needed by us all, especially in complex, multi-enterprise development situations. This paper describes how ... and schema development are essentially synonymous, in that the applicable techniques and requisite technology are the same for ...
Publication - cat - 04/17/2013 - 08:16 - 0 comments - 0 attachments
... CompEuro93; Computers in Design URL: ... transaction time and valid time are added to the data. In this context, the modification of the schema which a database management ...
Publication - cat - 04/17/2013 - 06:49 - 0 comments - 0 attachments
... database system needs to support changes to its schema in order to facilitate the requirements of new applications and to support interoperability within a multidatabase system. In this paper, we present an approach to schema evolution through changes to ...
Publication - erhard - 04/17/2013 - 05:16 - 0 comments - 0 attachments
... 10 - 49 In the context of object-oriented design, software systems model real-world entities abstractly represented in the system classes. As the system evolves through its lifecycle, its class ...
Publication - cat - 04/16/2013 - 09:27 - 0 comments - 0 attachments
... Proc. 3rd ER-Workshop Evolution and Change in Data Management (ECDM 2004), LNCS 3289 ... 1 - 9 One of the main challenges in data integration systems is the maintenance of the mappings between the ...
Publication - cat - 04/16/2013 - 08:49 - 0 comments - 0 attachments
... development. On the schema level, a firm restriction in this evolution is that it can only be done by evolving class hierarchies ... subclassing. We show a unified approach to class evolution in object-oriented databases, where class hierarchies are allowed to grow in ...
Publication - cat - 04/16/2013 - 05:27 - 0 comments - 0 attachments
... 50 - 99 In this paper we present an approach to model ontology evolution as ... by a set of rules defining ontology consistency. In this way we allow a user to specify an arbitrary request declaratively and ...
Publication - cat - 04/16/2013 - 05:05 - 0 comments - 0 attachments
... views that determine its schema and its content in terms of the schema and the content of the data sources. DW applications ... against the cost of maintaining the materialized views. In an evolving DW application, new queries need to be answered by the DW. An ...
Publication - cat - 04/16/2013 - 04:49 - 0 comments - 1 attachment
... and numerous other domains. Procedural changes, performed in an ad hoc manner, can cause inefficiencies, inconsistencies, and ... This paper is concerned with dynamic change to procedures in the context of workflow systems. How can we make workflow systems more ...
Publication - cat - 04/16/2013 - 04:38 - 0 comments - 1 attachment
... histories of the schema objects should be traceable. In this paper we propose a method for managing schema changes by exploiting ...
Publication - cat - 04/16/2013 - 03:38 - 0 comments - 0 attachments
... the myriad of possible change semantics a user may desire in the future, any pre-defined set is not sufficient. Rather we present a ... invariants, can be a very expensive re-engineering effort. In this paper we present an approach that de-couples the constraints from the ...
Publication - cat - 04/16/2013 - 02:49 - 0 comments - 1 attachment
... mechanism is a pertinent way to implement specialization in an object database and differs from the classical mechanism used in most object-oriented database systems. It supports multiple instantiation, ...
Publication - cat - 04/16/2013 - 02:38 - 0 comments - 1 attachment
Authors: Benatallah, B Author: Benatallah, B Year: ...
Publication - cat - 04/16/2013 - 02:27 - 0 comments - 1 attachment
... An important yet open problem in workflow management is the evolution of workflow schemas, i.e., the creation, deletion and modification of workflow types in such a way that the schema remains correct. This problem is aggravated when ...
Publication - cat - 04/16/2013 - 02:16 - 0 comments - 0 attachments
