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DAWAK
2003
Springer

Performance Tests in Data Warehousing ETLM Process for Detection of Changes in Data Origin

12 years 1 months ago
Performance Tests in Data Warehousing ETLM Process for Detection of Changes in Data Origin
In a data warehouse (DW) environment, when the operational environment does not posses or does not want to inform the data about the changes that occurred, controls have to be implemented to enable detection of these changes and to reflect them in the DW environment. The main scenarios are: i) the impossibility to instrument the DBMS (triggers, transaction log, stored procedures, replication, materialized views, old and new versions of data, etc) due to security policies, data property or performance issues; ii) the lack of instrumentation resources on the DBMS; iii) the use of legacy technologies such file systems or semi-structured data; iv) application proprietary databases and ERP systems. In another article [1], we presented the development and implementation of a technique that was derived for the comparison of database snapshots, where we use signatures to mark and detect changes. The technique is simple and can be applied to all four scenarios above. To prove the efficiency of ...
Rosana L. de B. A. Rocha, Leonardo Figueiredo Card
Added 06 Jul 2010
Updated 06 Jul 2010
Type Conference
Year 2003
Where DAWAK
Authors Rosana L. de B. A. Rocha, Leonardo Figueiredo Cardoso, Jano Moreira de Souza
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