Duplicate Data
Learn about duplicate data, its origins, and the harm it can cause to organizations.
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Introduction
Duplicate data is data that exists as a copy of already existing data. In a dataset, duplicate data could mean two or more similar records exist. When analyzing data, we must work with data that doesn’t have duplicate records. This is because reports generated from such data will not be accurate and reliable because they would relay incorrect insights about the subject in question.
Origins of duplicate data
Duplicate data may occur when we merge data from different sources that collect similar information. For example, a table designed to collect unique ...