A database has three tables students, courses, and grades StudentID is the primary key in the students table SID is a field serving as a foreign key in the grades table that connects with the StudentID field in the students table If we have 5 students in the students table ( StudentID S 1 , S 2 , S 3 , S 4 , and S 5 ) , of whom S 2 , S 4 , and S 5 also appear in the grades table Which of the following does not violate referential integrity constraint Changing SID S 5 in the grades table to S 9 Changing StudentID S 2 in the students table to S 6 Changing FName Abby in the students table to Veronica Deleting student S 4 from the students table

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Question: A database has three tables: students, courses, and grades. StudentID is the primary key in the students table. SID is a field serving as a

A database has three tables: students, courses, and grades. StudentID is the primary key in the students table. SID is a field serving as a foreign key in the grades table that connects with the StudentID field in the students table. If we have

5

students in the students table

(

StudentID: S

1,

2,

3,

4,

and S

5),

of whom S

2,

4,

and S

5

also appear in the grades table. Which of the following does not violate referential integrity constraint?

Changing SID S

5

in the grades table to S

9

Changing StudentID S

2

in the students table to S

6

Changing FName Abby in the students table to Veronica

Deleting student S

4

from the students table

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