Schema Evolution publication categorizer

... 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

... 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

... of the most important functions which need to be supported in integrated computer-aided design (CAD) systems. In this paper we address a broad spectrum of semantic and operational issues in ...

Publication - cat - 07/28/2016 - 08:29 - 0 comments - 0 attachments

... support scheme is distinguished from previous mechanisms in that it is primarily concerned with preserving existing database objects and ...

Publication - cat - 04/17/2013 - 12:38 - 0 comments - 1 attachment

... out on a model for the versioning of class definitions in an object-oriented database. By defining update and backdate functions on ... an old version of the schema to still use data created in the format of the changed schema. (no paper type, object-oriented, ...

Publication - cat - 04/17/2013 - 12:38 - 0 comments - 1 attachment

... and then produces a transformer that can update data in a database to correspond to a newer version of the schema. (no paper ...

Publication - erhard - 04/17/2013 - 10:05 - 0 comments - 1 attachment

... database reorganizations due to schema modification in object-oriented systems, since these are expensive operations and they ... show that data independence, which is a neglected concept in object databases, helps to avoid reorganizations in case of capacity ...

Publication - cat - 04/17/2013 - 07:05 - 0 comments - 0 attachments

... view system to support capacity-augmenting views. In this paper, we present algorithms that implement the complete set of typical ...

Publication - cat - 04/17/2013 - 06:38 - 0 comments - 0 attachments

... and sharability to objects created and manipulated in applications implemented in an object-oriented programming environment. One of the important ... make a wide variety of changes to the database schema. In this paper, following a brief review of the object-oriented data model that ...

Publication - cat - 04/17/2013 - 06:05 - 0 comments - 0 attachments

... conversion functions: immediate or lazy database updates. In this paper, we concentrate our attention to the definition of implementation ...

Publication - cat - 04/16/2013 - 19:38 - 0 comments - 1 attachment

... which takes evolution into account. Its originality is in allowing the development of partial schema versions, or views of a schema. These versions are created in the same database from a common schema. We define the set of authorised ...

Publication - cat - 04/16/2013 - 11:38 - 0 comments - 1 attachment

... system is modified, the database needs to be changed in such a way that the schema and the database remain consistent with each other. This paper describes the algorithm implemented in the new forthcoming release of the O2 object database for automatically ...

Publication - cat - 04/16/2013 - 11:27 - 0 comments - 1 attachment

... schema is defined and the problems which need to be solved in order to obtain a usable schema update mechanism are shown. The distinction ... and behavioral consistency for the O2 system is described in some detail and it is demonstrated how updates could be performed by ...

Publication - cat - 04/16/2013 - 08:16 - 0 comments - 0 attachments

... systems, the generation of structured web pages from data in database systems, or the integration of systems with different native data ... at the deferred execution approach for schema evolution in an effort to improve availability of the system, to the best of our ...

Publication - cat - 04/16/2013 - 07:49 - 0 comments - 1 attachment

... 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

... 1 - 9 In this paper, we propose a schema versioning mechanism to manage the schema evolution in temporal object-oriented databases. The schema evolution management uses an ...

Publication - cat - 04/16/2013 - 04:38 - 0 comments - 0 attachments

... 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

... versioning, and emulation at the instance level). In addition, we introduce the concept of class/schema version pertinence ...

Publication - cat - 04/16/2013 - 01:38 - 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

... 10 - 49 In this paper we address the problem of schema evolution in object-oriented database systems. Most currently available database ...

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

... 100 - 499 In engineering applications, multiple copies of object descriptions have to coexist in a single database. A scheme is proposed that enables users to explicitly ...

Publication - cat - 04/15/2013 - 22:49 - 0 comments - 0 attachments

... have been proposed and implemented. However, research in versions has been focused exclusively on versioning single design objects. In a multi-user design environment where the schema (definition) of the ...

Publication - cat - 04/15/2013 - 21:05 - 0 comments - 1 attachment