Question: A primary key used in a database is a Group of tables or files formed to identify a unique field or row Group of rows

A primary key used in a database is a
Group of tables or files formed to identify a unique field or row
Group of rows that are formed to identify a unique table or file
Column or group of columns that identifies a unique row in a table
Character or byte that represents fields or columns
 A primary key used in a database is a Group of

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