Detailed explanation and options for the selected question.
What is the purpose of the DEFAULT constraint in a table?
A.
To set a default value for a column
B.
To prevent NULL values in a column
C.
To enforce uniqueness in a column
D.
To link tables through a relationship
Explanation:
The DEFAULT constraint sets a default value for a column if no value is provided. Preventing NULLs, enforcing uniqueness, and linking tables are unrelated to this constraint.