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

... management systems (OODBMS) have enormous advantages in comparison to relational systems in modeling highly complex and dynamic application scenarios. Still they lack ...

Publication - cat - 04/17/2013 - 13:16 - 0 comments - 0 attachments

... value and their structure. As the structure is described in the schema of the database, support for schema evolution is a highly ... which can be used to perform the required changes, even in the presence of populated databases and running applications. In this paper, ...

Publication - cat - 04/17/2013 - 13:05 - 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

... 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

... and then produces a transformer that can update data in a database to correspond to a newer version of the schema.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

... 10 - 49 In this paper we present a formal model for the support of temporal schema versions in object-oriented databases. Its definition is partially based on a generic ...

Publication - fgrandi - 04/17/2013 - 08:49 - 0 comments - 0 attachments

... model is proposed for dynamic schema evolution (DSE) in objectbase systems (OBSs) that supports the fundamental concepts of ...

Publication - erhard - 04/17/2013 - 08:49 - 0 comments - 0 attachments

... 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

... application development lifecycle. The two primary schemas in an application, the conceptual model and the persistent database model, must ... model changes and the database and mapping must evolve in kind. We present a technique that, in most cases, allows those evolutions to ...

Publication - cat - 04/16/2013 - 20:38 - 0 comments - 0 attachments

... application development lifecycle. The two primary schemas in an application, the client conceptual object model and the persistent ... automatic evolution of object-relational mapping artifacts in the Microsoft Entity Framework. When starting with a valid mapping between ...

Publication - cat - 04/16/2013 - 20:05 - 0 comments - 1 attachment

... 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

... efforts directed towards evolving data definitions in object-oriented database systems. The emphasis is on their ability to ... modified. This approach is an extension of techniques used in artificial intelligence for knowledge representation. It extends previous ...

Publication - cat - 04/16/2013 - 18:49 - 0 comments - 1 attachment

... simple changes to individual schemas. As described in this paper, OTGen supports not only more complex schema changes, but also ... to the new definitions, thus facilitating improvements in performance, functionality, and usability of the database. (Conference, ...

Publication - cat - 04/16/2013 - 17:38 - 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

... 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

... evolution is the process of applying changes to a schema in a consistent way and propagating these changes to the instances while the database is in operation. In this process there are two problems to consider: semantics of ...

Publication - cat - 04/16/2013 - 05:49 - 0 comments - 0 attachments