Adata typedefines the kind of data a column can store in a database. It ensures data consistency and efficient storage.
Option A (Correct):A data type is anamed set of values, such asINTEGER, VARCHAR, DATE, etc.
Option B (Incorrect):A tuple refers to arowin a relational database, not a data type.
Option C (Incorrect):Data typesdefinecolumn values, but they do not correspond directly to columns.
Option D (Incorrect):Data types do not have avaryingset of rows; they define attributes for columns.
[Reference:Data types in relational databases., ]
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