November 2, 2011 | By Rey Villar
My last couple blogs set the stage for building test data sets of the right size and content. It’s time to take a breather to understand why system testing is …
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October 19, 2011 | By Rey Villar
Many BI efforts focus on testing the initial data load. Only the initial data load. We know BI solutions can behave differently depending on the presence or absence of data …
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October 14, 2011 | By Rey Villar
Functional canary testing ensures that the solution exercises every business rule, but not that your ETL will work under the pressure of production loads. For the next set of tests, …
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October 7, 2011 | By Rey Villar
Hadoop is a powerful data delivery alternative to traditional relationship database management systems (RDBMS). Unlike the RDBMS, Hadoop does not store data in tables in columns and rows. Hadoop does …
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October 3, 2011 | By Rey Villar
System testing should prove out your earlier efforts, not invalidate the entire system. If the latter happens, you’ve failed on requirements, environment, design, or all of the above. Like the …
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