Question 5Given the relation schema R(A, B, C) and S(C, D, E), please match each of the following relational algebra expressions to the corresponding SQL (Structured Query Language) statement.(Assume R and S are union compatible)1. RUSA. SELECT * FROM RMINUSSELECT * FROM S;B. SELECT FROM SMINUSSELECT FROM R;C. SELECT * FROM R CROSS JOIN S;D. SELECT * FROM R NATURAL JOIN S;E. SELECT FROM R JOIN S ON R.C = S.C;2. ROS3. R-S4. S R5. R* S6. RX S7.RAR.B S.BS G. SELECT FROM RUNIONSELECT8. RRC S.CS H. SELECTINTERSECTSELECT FROM S:1234567F. SELECT * FROM R JOIN S ON R.B = S.B;8FROM S:FROM RGHABDсFE

Given the relation schema R(A, B, C) and S(C, D, E), please match each of the following relational algebra expressions to the corresponding SQL (Structured Query Language) statement. (Assume R and S are union compatible) 1. RUS A. SELECT FROM R 2. RNS 3. R-S SELECT C. SELECT D. SELECT E. SELECT F. SELECT 7. RRB S.BS G. SELECT UNION SELECT 8. RRC S.CS H. SELECT INTERSECT 4. S R 5. R* S 6. RX S 1 2 3 4 5 6 7 MINUS SELECT FROM S: B. SELECT FROM S 8 MINUS FROM R: FROM R CROSS JOIN S; FROM R NATURAL JOIN S; FROM R JOIN S ON R.C=S.C; FROM R JOIN S ON R.B = S.B; FROM R FROM S: FROM R SELECT FROM S: G H A B D с F E

Given the relation schema R(A, B, C) and S(C, D, E), please match each of the following relational algebra expressions to the corresponding SQL (Structured Query Language) statement. (Assume R and S are union compatible) 1. RUS A. SELECT FROM R 2. RNS 3. R-S SELECT C. SELECT D. SELECT E. SELECT F. SELECT 7. RRB S.BS G. SELECT UNION SELECT 8. RRC S.CS H. SELECT INTERSECT 4. S R 5. R* S 6. RX S 1 2 3 4 5 6 7 MINUS SELECT FROM S: B. SELECT FROM S 8 MINUS FROM R: FROM R CROSS JOIN S; FROM R NATURAL JOIN S; FROM R JOIN S ON R.C=S.C; FROM R JOIN S ON R.B = S.B; FROM R FROM S: FROM R SELECT FROM S: G H A B D с F E

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Similar questions

Consider the relations R(A, B, C) and S(B, C, D) and the following SQL queries.1. Select distinct * from R, S;II. Select distinct * from R, S where R.C = S.C;IIl. Select distinct from R, S where R.C = S.C and R. B = S.B;IV. Select distinct * from R, S where R.C! = S.C;Match the following Table where the first column refers to the four given SQL queries
Question 5 Given the relation schema R(A, B, C) and S(C, D, E). please match each of the following relational algebra expressions to the corresponding SQL (Structured Query Language) statement. (Assume R and S are union compatible) 1. RUS A. SELECT FROM R MINUS SELECT * FROM S: B. SELECT FROM S 2. ROS SELECT FROM R: 3. R-S C. SELECT FROM R CROSS JOIN S; 4.S R D. SELECT * FROM R NATURAL JOIN S; 5. R S E. SELECT 6. RX S F. SELECT 7. RRB S.BS G. SELECT FROM R 1 SELECT 8. RRC S.CS H. SELECT 2 3 4 5 6 MINUS 7 8 UNION FROM R JOIN S ON R.C=S.C; FROM R JOIN S ON R.B = S.B; FROM S: FROM R INTERSECT SELECT FROM S; G H A B D с F E
Describe the basic operations of relational algebra in simple terms.
Consider the following schemas: Employee(staffId, name, salary, depNo) primary key staffId foreign key depNo references Department(depNo) Department(depNo,depname, totalSal) primary key depNo and the following procedural SQL statement: CREATE TRIGGER mystery AFTER INSERT ON Employee FOR EACH ROW IF NOT (NEW.depNo IS NULL) UPDATE Department SET totalSal = totalSal + NEW.salary NEW.depNo WHERE depNo ENDIF / = Explain what this trigger does without referring to its code. Describe the effect on the database that it has.
Question 35 If there are several operators with same priority in an arithmetic expression of an SQL statement then the priority will be For division for multiplication From left to right For addition
All of the following are true about relational table except Each column has a distinct name Each table must have an identifier All the values in a column can be with different data types Oc. Each row represents one instance