Question: What does a unique key do in a relational database? Uniquely identifies a row in the table Requires a field in a table to match

What does a unique key do in a relational database?
Uniquely identifies a row in the table
Requires a field in a table to match a primary key in a second
Uniquely identifies a column in the table
Indicates that an index cannot accept duplicate entries
What does a unique key do in a relational database? Uniquely

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