... 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
... 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
... 10 - 49 Changes in the real world may require both the database population and the database schema to evolve. Particularly, this is the case in CAD/CAM and CASE database systems, in which the design objects constantly ...
Publication - erhard - 04/17/2013 - 10:05 - 0 comments - 0 attachments
... XML documents that satisfy a given schema, e.g., a DTD. In this context, when a given update violates the schema, it might be the ... to be used by a data administrator who is an expert in the domain of application of the database, but who is not required to be a ...
Publication - cat - 04/17/2013 - 07:27 - 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
... differences between (two) versions of the same ontology in order to store or visualize their deltas is a challenging task for e-science. In this paper, we focus on languages allowing the formulation of concise and ...
Publication - cat - 04/17/2013 - 05:49 - 0 comments - 1 attachment
... Recently there has been increasing interest in both the problems and the potential of accommodating evolving schema in databases, especially in systems which necessitate a high volume of ...
Publication - cat - 04/17/2013 - 05:05 - 0 comments - 0 attachments
... 10 - 49 In this paper, we deal with the problem of performing what-if analysis for changes that occur in the schema/structure of the data warehouse sources. We abstract software ...
Publication - pvassil - 04/17/2013 - 04:49 - 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
... using conventions on version numbers and namespaces. In all cases, the compatibility among services description must be evaluated, ... performed manually, particularly for complex descriptions. In this paper, we describe a method to automatically determine when two service ...
Publication - KarinBecker - 04/16/2013 - 08:27 - 0 comments - 0 attachments
... Systems face the problem of maintaining their systems in the presence of frequently occurring changes in any counterpart of it. In other words, when a change occurs in any point of ...
Publication - gpapas - 04/16/2013 - 08:27 - 0 comments - 1 attachment
... same design construct. The behavior of the chosen design in the presence of evolution events is an important parameter for this choice. ...
Publication - gpapas - 04/16/2013 - 08:16 - 0 comments - 0 attachments
... WCRE'04 / ATEM'04, Electronic Notes in Theoretical Computer Science, Vol. 137, Is. 3: 5-15 ...
Publication - huliganka - 04/16/2013 - 07:49 - 0 comments - 0 attachments
... 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
... the entire history of source databases is not stored in the warehouse; the warehouse keeps enough information for its ... (i.e. non-temporal operators). Although temporal views in V are specified in a temporal algebraic query language we translate them into relational ...
Publication - huliganka - 04/16/2013 - 06:27 - 0 comments - 1 attachment
... schema modifications without database reorganisation in Object Oriented Database Systems. Our approach allows each user to specify ... we argue that view mechanism capabilities must be enhanced in order to be used as a uniform framework to manipulate both the schema and ...
Publication - cat - 04/16/2013 - 06:27 - 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
... 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
... 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
... There is much current interest in publishing and viewing databases as XML documents. The general benefits of ... for visualizing and processing information encoded in this universal standard. In this paper, we explore the additional and unique ...
Publication - cat - 04/16/2013 - 02:16 - 0 comments - 0 attachments
... that alternative schema perspectives seems to be needed, in addition to revision-like changes. The primary goal is to support change ...
Publication - cat - 04/16/2013 - 01:16 - 0 comments - 0 attachments
... 785.12 KB In heterogeneous data warehousing environments, autonomous data sources are ... data sources and the integrated database may be expressed in different modelling languages. It is possible for either the data source ... of the schema, or evolution of the modelling language in which the schema is expressed, or both. In such scenarios, it is important ...
Publication - cat - 04/15/2013 - 22:49 - 0 comments - 1 attachment
... 252.55 KB An important issue in data integration is the integration of semantically equivalent but ... source restructuring for such databases have been proposed in the literature, such as the SQL extension SchemaSQL. However, the issue of incremental maintenance of views defined in such languages remains an open problem. We present an incremental view ...
Publication - cat - 04/15/2013 - 22:27 - 0 comments - 1 attachment
