... 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
... We introduce a protocol for schema evolution in a globally distributed database management system with shared data, ... Our protocol is asynchronous--it allows different servers in the database system to transition to a new schema at different times--and ...
Publication - cat - 10/24/2013 - 14:57 - 0 comments - 0 attachments
... mappings into SQL views to reassemble the objects stored in relational tables. Second, it offers interactive editing, i.e., incremental ...
Publication - cat - 04/17/2013 - 12:16 - 0 comments - 1 attachment
... over the target schema that satisfies the schema mapping. In general, a given source instance may have numerous different solutions. ...
Publication - hartung - 04/17/2013 - 12:16 - 0 comments - 1 attachment
... OWL. COMA++ includes new approaches for ontology matching, in particular the utilization of shared taxonomies. Furthermore, different ...
Publication - Anonymous - 04/17/2013 - 11:16 - 0 comments - 1 attachment
... between elements of two schemas. It is needed in many database applications, such as integration of web data sources, data ... matching system as a platform to combine multiple matchers in a flexible way. We provide a large spectrum of individual matchers, in ...
Publication - cat - 04/17/2013 - 10:49 - 0 comments - 1 attachment
... KB Schema matching is a critical step in many applications, such as XML message mapping, data warehouse loading, and schema integration. In this paper, we investigate algorithms for generic schema matching, ...
Publication - admin - 04/17/2013 - 10:49 - 0 comments - 1 attachment
... 213.88 KB A fundamental problem in information integration is to precisely specify the relationships, called ...
Publication - cat - 04/17/2013 - 10:27 - 0 comments - 1 attachment
... manipulating object-based views on relational databases. In this paper, we present a scheme for handling update operations on view ...
Publication - erhard - 04/17/2013 - 09:38 - 0 comments - 0 attachments
... Venue: In Proceedings of VLDB, pages 598--609, 2002 ... Mapping and translating data stored in dierent formats continues to be an important problem in modern information ...
Publication - massmann - 04/17/2013 - 09:27 - 0 comments - 0 attachments
... and XQuery using the XML data type introduced by SQL/XML. In this tutorial we focus on DB2s XML support for schema evolution, especially ...
Publication - cat - 04/17/2013 - 08:16 - 0 comments - 1 attachment
... 970.14 KB In relational databases a view definition is a query against the database, and ... materialization over a database may change as relations in the database undergo modificationsIn this paper a mechanism is proposed in which the view is materialized at all times The problem which this mechanism ...
Publication - cat - 04/17/2013 - 08:05 - 0 comments - 1 attachment
... Schema evolution poses serious challenges in historical data management. Traditionally the archival data has been (i) ... or (ii) maintained under the original schema version in which they firstly appeared, leading to a perfect archival quality, but to a ...
Publication - krlis1337 - 04/17/2013 - 07:27 - 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
... are yet no mapping systems that support core computations. In this paper we introduce several new algorithms that contribute to bridge the ...
Publication - salva - 04/17/2013 - 06:05 - 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
... 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
... version and configuration management. Most previous work in change management has dealt with flat-file and relational data; we focus on hierarchically structured data. Since in many cases changes must be computed from old and new versions of the data, ...
Publication - huliganka - 04/17/2013 - 00:49 - 0 comments - 1 attachment
... databases, and version and configuration management. In this paper we focus on detecting meaningful changes in hierarchically structured data, such as nested-object data. This problem is ...
Publication - huliganka - 04/17/2013 - 00:38 - 0 comments - 1 attachment
... to the original one. This question was addressed in the literature with respect to those relational schemes that satisfy the so ... \"tractable\" We are able to test losslessness defined in such a way for a wide class of relational expressions and dependencies. An ...
Publication - huliganka - 04/17/2013 - 00:27 - 0 comments - 1 attachment
... 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
... A broad spectrum of data is available on the Web in distinct heterogeneous sources, and stored under different formats. ... and conversion mechanisms increases greatly. In this paper we present a new translation system, based on ...
Publication - admin - 04/16/2013 - 17:16 - 0 comments - 1 attachment
... are ample sources that provide structured information in the same domains (e.g., books and automobiles). Second, while sources ... demonstrate our approach over hundreds of real Web sources in four domains and the results show good accuracy. (Sigmod / VLDB, Web ...
Publication - admin - 04/16/2013 - 17:05 - 0 comments - 1 attachment
... sources through a single mediated schema. A key bottleneck in building such systems has been the laborious manual construction of semantic ... learner exploits a different type of information either in the source schemas or in their data. Once the learners have been trained, ...
Publication - admin - 04/16/2013 - 16:38 - 0 comments - 1 attachment
