Consider the following tables and their respective degrees and cardinalities…
2023
Consider the following tables and their respective degrees and cardinalities in a database called SCHOOL: (Table Data Provided) Select the degree and cardinality of the cartesian product of the tables STUDENT TEACHER from the following options:
- A.
30 7500 / 30 7500
- B.
200 325 / 200 325
- C.
30 325 / 30 325
- D.
200 7500 / 200 7500
Attempted by 315 students.
Show answer & explanation
Correct answer: A
For Cartesian product: Degree = sum of degrees = 20 (STUDENT) + 10 (TEACHER) = 30