... are involved. Moreover, system modifications that result in changes to database structure are relatively frequent [Sjoberg, D. 1992, ... schema is a common, but often troublesome, occurrence in database administration. These are significant industrial concerns, both ...
Publication - cat - 01/20/2018 - 09:23 - 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
... and collaborative process, developers face challenges in managing multiple ontologies, including comparing, aligning, and merging ... different formalisms. The uniform framework presented in this article assists users with these tasks by leveraging data and algorithms developed for one tool in other tools. (Journal, no paper type, Ontology Alignment, Ontology ...
Publication - cat - 04/17/2013 - 13:05 - 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
... 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
... to a perpetual evolution, which is particularly pressing in Web Information Systems, due to their distributed and often collaborative ... logical independence, and auditability of the process. In fact, PRISM exploits recent theoretical results on mapping composition, ...
Publication - krlis1337 - 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
... 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
... 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
... more difficult and have thus far remained unsolved. In this paper, we address this issue by introducing a formal evolution model ... including the Genetic DB Ensembl (410+ schema versions in 9 years), and Wikipedia (240+ schema versions in 6 years). (Database ...
Publication - krlis1337 - 04/17/2013 - 06:49 - 0 comments - 0 attachments
... 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
... the challenge of managing the history of their databases in the face of intense database schema evolution . Our PRIMA system ... method for publishing the history of a relational database in XML, whereby the evolution of the schema and its underlying database are ...
Publication - krlis1337 - 04/17/2013 - 01:38 - 0 comments - 1 attachment
... mainly domain knowledge. As the use of ontologies in several kinds of ISs increased in the recent years significantly, the question of how to maintain these ...
Publication - hartung - 04/17/2013 - 01:27 - 0 comments - 1 attachment
... describe entities of domains, such as genes and proteins in life sciences. Their increasing size and the high frequency of updates resulting in a large set of ontology versions necessitates efficient management and ... (Compose, Diff, Journal, Mapping evolution, OA in the Life Sciences, Ontology evolution, Research paper, Versioning) ...
Publication - hartung - 04/16/2013 - 23:05 - 0 comments - 0 attachments
... 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
... Modern information systems, and web information systems in particular, are faced with frequent database schema changes, which generate ... to manage such evolution and preserve their history. In this paper, we describe the Pantha Rei Framework designed to provide ...
Publication - krlis1337 - 04/16/2013 - 10:05 - 0 comments - 0 attachments
... causes major usability and scalability problems in preservation,retrieval and querying of databases with intense evolution ... hundreds of schema versions.This scenarios are common in web information systems and scientific databases that frequently accumulate ...
Publication - krlis1337 - 04/16/2013 - 08:05 - 0 comments - 0 attachments
... After more than 20 years of research and practice in software configuration management (SCM), constructing consistent ... such as revisions, variants, configurations, and changes. In particular, we focus on intensional versioning, that is, construction of ...
Publication - cat - 04/16/2013 - 07:38 - 0 comments - 0 attachments
... or changing parts of the language. Making versioning work in practice is one of the most difficult problems in computing, with a long history of failed attempts. Arguably one reason why ...
Publication - cat - 04/16/2013 - 05:05 - 0 comments - 0 attachments
... heterogeneous schemata for various database related tasks. In particular, schema versioning, and its weaker companion, schema evolution, ... to retain current data and software system functionality in the face of changing database structure. Schema versioning and schema ...
Publication - cat - 04/16/2013 - 04:49 - 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
... Proc. 3rd ER-Workshop Evolution and Change in Data Management (ECDM 2004), LNCS 3289 ... is the ability of the database to respond to changes in the real world by allowing the schema to evolve. The multidimensional ...
Publication - cat - 04/16/2013 - 04:16 - 0 comments - 1 attachment
Authors: Benatallah, B Author: Benatallah, B Year: ...
Publication - cat - 04/16/2013 - 02:27 - 0 comments - 1 attachment
... time-varying XML documents or for a time-varying schema. In previous work we introduced τXSchema, which is an infrastructure and suite ... documents, without requiring any changes to XML Schema. In this paper we extend τXSchema to support versioning of the schema itself. ...
Publication - cat - 04/16/2013 - 02:16 - 0 comments - 0 attachments
