Check all the constraints that the operations below violate. Flag question: Question 6Question 6Tips2 ptsUPDATE Enrollments SET StudentID = 10, CourseID = 999 WHERE EnrollmentID = 1;Group of answer choicesNo ViolationReferential integrity constraintKey constraintEntity integrity constraint
Question
Check all the constraints that the operations below violate. Flag question: Question 6Question 6Tips2 ptsUPDATE Enrollments SET StudentID = 10, CourseID = 999 WHERE EnrollmentID = 1;Group of answer choicesNo ViolationReferential integrity constraintKey constraintEntity integrity constraint
Solution
This operation could potentially violate the following constraints:
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Referential Integrity Constraint: If there is no Student with ID 10 or no Course with ID 999 in their respective tables, this operation would violate the referential integrity constraint. This constraint ensures that relationships between tables remain consistent. In other words, if a record in Table A references a record in Table B, that record must actually exist in Table B.
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Key Constraint: If there is already a record in the Enrollments table with StudentID = 10 and CourseID = 999, this operation would violate the key constraint. This constraint ensures that a table cannot have duplicate records (based on the key).
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Entity Integrity Constraint: This operation does not violate the entity integrity constraint, which ensures that the key in any row of a table is never NULL. The operation is not attempting to set EnrollmentID, StudentID, or CourseID to NULL.
So, the answer is: Referential integrity constraint and Key constraint.
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