Which key is used to uniquely identify each record in a table? a) Foreign Key
b) Alternate Key
c) Composite Key
d) Primary Key
Which key is used to uniquely identify each record in a table?
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Which key is used to uniquely identify each record in a table? a) Foreign Key
b) Alternate Key
c) Composite Key
d) Primary Key
The correct answer is d) Primary Key.
A primary key is a unique identifier for each record in a database table. It ensures that no two records can have the same value for that key, which helps maintain the integrity of the data. Other key types like foreign keys, alternate keys, and composite keys have different functions in the context of relational databases.