... 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
... 50 - 99 In this paper, we address the issues related to the evolution and maintenance ... sources. The data of the data warehouse is used primarily in organizational decision-making and may be strategic. Therefore, the schema ...
Publication - erhard - 04/17/2013 - 09:05 - 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
... We describe examples of problems of semantic heterogeneity in databases due to “domain evolution”, as it occurs in both single- and multidatabase systems. These problems occur when the ...
Publication - cat - 04/17/2013 - 06:27 - 0 comments - 1 attachment
... 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
... 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
... databases arises from a number of critical tasks in data management. These tasks are complicated by schema evolution in the underlying databases and by the presence of non-standard database ... specifying such transformations, and its implementation in a system called Morphase (an “enzyme” for morphing data). WOL is ...
Publication - erhard - 04/16/2013 - 12:16 - 0 comments - 1 attachment
... Bonifati and Rahm provides an overview of the ways in which the schema and ontology matching and mapping tools have addressed the ...
Publication - cat - 04/16/2013 - 11:49 - 0 comments - 0 attachments
... 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
... construction and maintenance of data warehouses (views) in large-scale environments composed of numerous distributed and evolving ... the problem of schema changes of ISs, while previous work in this area, such as incremental view maintenance, has mainly dealt with data ...
Publication - cat - 04/16/2013 - 02:27 - 0 comments - 0 attachments
