Given T1 reads Fa, T2 writes Ra2, T4 reads Fb and writesRb1,…
Given T1 reads Fa, T2 writes Ra2, T4 reads Fb and writesRb1, T3 reads Fa and writes Ra1. 0 _______ 1 _______ 2 _______ 3 _______ 4 _______ 5 _______ 6 _______ 7 _______ 8 _______ 9 _______ 10 _______ 11 _______ 12 _______ 13 _______ 14 _______ 15 _______ 16 _______ 17 _______ 18 _______ 19 _______ 20 _______ 21 _______ 22 _______ 23 _______
Read DetailsThere are four relations as follows: Student (id(PK), name,…
There are four relations as follows: Student (id(PK), name, dept_name(FK), gpa, major, phone, advisor_name) Department (dept_name(PK), building, budget) Takes (id(PK, FK), course_id(PK, FK), sec_id(PK, FK), semester(PK, FK), year(PK, FK) , grade) Course (course_id(PK), title, dept_name(FK), credit_hours) Note. PK = Primary key, and FK = Foreign key. Given: the number of records in table Student = 1,000. the number of records in table Course = 100. the number of records in table Takes = 5,000. the number of records in table Department = 10. Given the number records of Student.id Ո Takes.id = 5,000. What is the estimate of number records for Student Takes? _______
Read DetailsThere are four relations as follows: Student (id(PK), name,…
There are four relations as follows: Student (id(PK), name, dept_name(FK), gpa, major, phone, advisor_name) Department (dept_name(PK), building, budget) Takes (id(PK, FK), course_id(PK, FK), sec_id(PK, FK), semester(PK, FK), year(PK, FK) , grade) Course (course_id(PK), title, dept_name(FK), credit_hours) Note. PK = Primary key, and FK = Foreign key. Given: the number of records in table Student = 1,000. the number of records in table Course = 100. the number of records in table Takes = 5,000. the number of records in table Department = 10. Given Student.id Ո Takes.id = . What is the estimate of number records for Student Takes = _______
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