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Duplicate Data Data set may include data objects that are duplicates, or almost duplicates of one another Major issue when merging data from heterogeneous sources

Duplicate Data

Data set may include data objects that are duplicates, or almost duplicates of one another

Major issue when merging data from heterogeneous sources

Examples:

Same person with multiple email addresses

Data cleaning

Process of dealing with duplicate data issues

When should duplicate data not be removed?

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