... ETL architect needs to design and improve an ETL design in a way that satisfies both performance and correctness guarantees and often, she has to choose among various alternative designs. In this paper, we focus on ways to predict the maintenance effort of ETL ...
Publication - pvassil - 04/25/2013 - 08:40 - 0 comments - 0 attachments
... provide high level quality of data and quality of service. In the DWQ project we have proposed an architectural framework and a repository ... metadata which describes all the data warehouse components in a set of metamodels to which is added a quality metamodel, defining for each ...
Publication - cat - 04/17/2013 - 05:27 - 0 comments - 1 attachment
... 10 - 49 In this paper, we deal with the problem of performing what-if analysis for changes that occur in the schema/structure of the data warehouse sources. We abstract software ...
Publication - pvassil - 04/17/2013 - 04:49 - 0 comments - 0 attachments
... Systems face the problem of maintaining their systems in the presence of frequently occurring changes in any counterpart of it. In other words, when a change occurs in any point of ...
Publication - gpapas - 04/16/2013 - 08:27 - 0 comments - 1 attachment
... same design construct. The behavior of the chosen design in the presence of evolution events is an important parameter for this choice. ...
Publication - gpapas - 04/16/2013 - 08:16 - 0 comments - 0 attachments
... queries and applications, mainly due to the fact that, in most cases, their role as integral parts of the environment is not given the ... the queries are not designed to handle database evolution. In this paper, we introduce a graph-based model that uniformly captures ...
Publication - gpapas - 04/16/2013 - 07:38 - 0 comments - 1 attachment
... are added, removed or updated rather often. Small changes in the database configurations might impact a large number of applications and ...
Publication - gpapas - 04/16/2013 - 07:27 - 0 comments - 0 attachments
... Venue: In International Workshop on Database Preservation (PresDB 07) ...
Publication - gpapas - 04/16/2013 - 07:05 - 0 comments - 1 attachment
... Venue: In 10th International Workshop on Exploring Modeling Methods for Systems Analysis and Design - EMMSAD '05 (in conjunction with CAISE'05) ...
Publication - gpapas - 04/16/2013 - 06:38 - 0 comments - 1 attachment
... 210.1 KB In this paper, we visit the problem of the management of inconsistencies ...
Publication - gpapas - 04/16/2013 - 04:27 - 0 comments - 1 attachment
... 10 - 49 In this paper, we discuss the problem of performing impact prediction for changes that occur in the schema/structure of the data warehouse sources. We abstract ... of our approach over real-world ETL workflows used in the Greek public sector. (Data Warehouses, ETL, Evolution, Impact of ...
Publication - gpapas - 04/16/2013 - 04:05 - 0 comments - 0 attachments
