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How will you test data quality ?

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The entire data that has been collected could be important but all data is not equal so it is necessary to first define from where the data came , how the data would be used and consumed. Data that will be consumed by vendors or customers within the business ecosystem should be checked for quality and needs to cleaned. This can be done by applying stringent data quality rules and by inspecting different properties like conformity, perfection, repetition, reliability, validity, completeness of data, etc.

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