Page 185 - DCAP603_DATAWARE_HOUSING_AND_DATAMINING

Unit 9: Data Warehouse Refreshment – II

notes
figure 9.5: first example of refreshment scenario

We can define another refreshment scenario with the same sources and similar views. This
scenario mirrors the average duration and cost for each day instead of for the last six months.
This leads to change the frequency of extraction, cleaning, integration and propagation. Figure
9.6 gives such a possible scenario. Frequencies of source extractions are those which are allowed
by source administrators.

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