This SQL statement violates the Key constraint.

The Key constraint in a database ensures that a column or a set of columns are unique in each row. In this case, the statement is trying to set the EnrollmentID to 1, which could potentially violate the Key constraint if there is already an enrollment with the ID of 1.

The Referential integrity constraint ensures that a foreign key value always points to an existing row. Since the statement is not modifying any foreign keys, it does not violate this constraint.

The Entity integrity constraint ensures that the primary key of a table is unique and not null. Since the statement is not setting the primary key to null, it does not violate this constraint.

Therefore, the correct answer is Key constraint.

Question

This SQL statement violates the Key constraint.

The Key constraint in a database ensures that a column or a set of columns are unique in each row. In this case, the statement is trying to set the EnrollmentID to 1, which could potentially violate the Key constraint if there is already an enrollment with the ID of 1.

The Referential integrity constraint ensures that a foreign key value always points to an existing row. Since the statement is not modifying any foreign keys, it does not violate this constraint.

The Entity integrity constraint ensures that the primary key of a table is unique and not null. Since the statement is not setting the primary key to null, it does not violate this constraint.

Therefore, the correct answer is Key constraint.

Knowee AI · Accepted Answer

This SQL statement violates the Key constraint.

The Key constraint in a database ensures that a column or a set of columns are unique in each row. In this case, the statement is trying to set the EnrollmentID to 1, which could potentially violate the Key constraint if there is already an enrollment with the ID of 1.

The Referential integrity constraint ensures that a foreign key value always points to an existing row. Since the statement is not modifying any foreign keys, it does not violate this constraint.

The Entity integrity constraint ensures that the primary key of a table is unique and not null. Since the statement is not setting the primary key to null, it does not violate this constraint.

Therefore, the correct answer is Key constraint.

UPDATE Enrollments SET EnrollmentID = 1, CourseID = 999 WHERE EnrollmentID = 6;Group of answer choicesNo ViolationKey constraintReferential integrity constraintEntity integrity constraint

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