In Oracle PL/SQL, a column is a set of data values, all of a single type, in a table. Columns define the data in a table, while rows populate data into the table.
The columns provide the structure according to which the rows are composed.
The term "field" is often used interchangeably with "column", but database professionals prefer to use the word "field" to denote a particular value or single item of a column.
In other words, a field is the intersection of a row and a column.
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