Data Item is the smallest unit of named data.
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Reason — In the relational data model, a data item is the smallest unit of named data. It is an atomic value that is the basic building block of a relational database.
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In relational data model a table is called relation.
A row in a table will not represent a relationship among a set of values.
Data Item represents multi-type of information in a field.
Duplication of data is known as Data Redundancy.