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Consider the following two tables where Grades.ID is a foreign key to Students.ID. Students (ID, Name) Grades(ID, Course_No, Grade) Consider the following relational algebra expressions: Expl := TID, Name (Students A Grades) Exp2 := TSnudents.ID, Name (Students x Grades) In the following questions, select whether each query is equivalent to Exp1, Exp2, or Neither.

Consider the following two tables where Grades.ID is a foreign key to Students.ID. Students (ID, Name) Grades(ID, Course_No, Grade) Consider the following relational algebra expressions: Expl := TID, Name (Students A Grades) Exp2 := TSnudents.ID, Name (Students x Grades) In the following questions, select whether each query is equivalent to Exp1, Exp2, or Neither.

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider the following two tables where Grades.ID is a foreign key to Students.ID. Students (ID, Name) Grades(ID, Course_No, Grade) Consider the following relational algebra expressions: Exp1 := TtID, Name (Students ¤ Grades) Exp2 := TStudents.ID, Name (Students x Grades) In the following questions, select whether each query is equivalent to Exp1, Exp2, or Neither.
Transcribed Image Text:Consider the following two tables where Grades.ID is a foreign key to Students.ID. Students (ID, Name) Grades(ID, Course_No, Grade) Consider the following relational algebra expressions: Exp1 := TtID, Name (Students ¤ Grades) Exp2 := TStudents.ID, Name (Students x Grades) In the following questions, select whether each query is equivalent to Exp1, Exp2, or Neither.
The following RA: R1:= (Students DA Students.ID = Grades.ID Grades) R2:= (Students M Students.ID = Grades.ID Grades) R3:= T Students.ID, Name (R1 N R2) O Exp1 O Exp2 O Neither
Transcribed Image Text:The following RA: R1:= (Students DA Students.ID = Grades.ID Grades) R2:= (Students M Students.ID = Grades.ID Grades) R3:= T Students.ID, Name (R1 N R2) O Exp1 O Exp2 O Neither
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