The Format of Nothing

Blog Administrator | Analyzing Data, Analyzing Data Quality, Data Governance, Data Management, Data Profiling, Data Quality | , , , , ,

By David Loshin

The first question I always wonder about missing data is about the format of the missing data, especially in systems that predate the concept of the “system null” value. For example, early systems maintained files storing tables with fixed-width columns. When one of a record’s field was missing a value, something had to be fitted into that field to ensure that the rest of the columns lined up correctly.
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