Data Quality Assessment: Sparsity and Nullness

Blog Administrator | Analyzing Data, Analyzing Data Quality, Data Quality, Data Quality Assessment | , , , , , ,

By David Loshin

The first set of data quality assessment techniques that use column value frequency analysis focuses on the relationship of the population of values to the business processes that consume the data. The intent is to understand how the relative population of the column is associated with defined (or implicit) business rules, and then isolate and validate those rules.
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Garbage In …

Melissa Team | Data Cleansing, Data Quality | , ,

By Elliot King

We all know that dirty data is not really dirty; it is just incorrect. Data
cleansing consists of correcting mistakes in the data.

Mistakes make their way into contact data in several different ways. It may just
be wrong or incomplete; it may not be updated; and it may be duplicated if small
variations are entered into the contact information each time a customer gets in
touch your organization.… Read More