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Function documentationComparison Scenarios

 

When you start a comparison run, you can choose a comparison scenario from the special options. The comparison scenarios influence the runtime behavior of the data extraction and comparison engine.

Caution Caution

Use these scenarios for special purposes only, such as troubleshooting, debugging, or exceptional comparisons. Familiarize yourself with them and how they affect system behavior. Some of the scenarios may have a performance impact, while others may even falsify the result or fail to show existing inconsistencies correctly.

End of the caution.

Features

You can choose from the following comparison scenarios:

  • Count Expected Records Only (No Comparison)

    This scenario counts the number of expected records in each source system. However, it does not check that the keys are identical. Therefore, an identical count does not necessarily mean that the source systems contain the same objects.

  • Detailed Comparison Only if Counts Are Not Identical

    This scenario first counts the number of expected records in each source system. If the number of expected records is identical, the system does not perform a comparison. However, if the counts are different, a detailed extraction and comparison is performed. This does not include a check for identical keys. Therefore, an identical count does not necessarily mean that the source systems contain the same objects.

  • Std Comparison with Details Results up to "Max Differences"

    This is the recommended, default option for a standard comparison. The system first counts the number of expected records in both source systems. It then performs a detailed extraction and comparison. If the number of inconsistencies identified exceeds the maximum number of differences (as defined in the comparison), the comparison run is stopped prematurely.

  • Continue Comparison After "Max Differences" but w/o Details

    This scenario is similar to the standard comparison but in this case, the comparison continues even if the maximum number of differences has been reached. The system does not record any further details; it simply increases the count of any inconsistent key figures.

    Caution Caution

    This option can dramatically increase the total runtime, especially if there is a systematic error such as an incorrectly defined comparison or if the source systems are entirely different.

    End of the caution.