me CHAR(20), meets atTIME, room CHAR(10), fid INTEGER, PRIMARY KEY (name), FOREIGN KEY (fid) REFERENCES Faculty) CREATE TABLE Enrolled ( snum INTEGER, cname CHAR(20), PRIMARY KEY (snum, cname), FOREIGN KEY (snum) REFERENCES Student), FOREIGN KEY (cname) REFERENCES Class) 1. Find the names of all juniors (Level = JR) who
Given the following
CREATE TABLE Student ( snum INTEGER, sname CHAR(20), major CHAR(20),
level CHAR(20), age INTEGER, PRIMARY KEY (snum))
CREATE TABLE Faculty ( fid INTEGER, fname CHAR(20), deptid INTEGER,
PRIMARY KEY (fnum))
CREATE TABLE Class ( name CHAR(20), meets atTIME, room CHAR(10), fid INTEGER, PRIMARY KEY (name), FOREIGN KEY (fid) REFERENCES Faculty)
CREATE TABLE Enrolled ( snum INTEGER, cname CHAR(20), PRIMARY KEY (snum, cname), FOREIGN KEY (snum) REFERENCES Student), FOREIGN KEY (cname) REFERENCES Class)
1. Find the names of all juniors (Level = JR) who are either enrolled or not in a class taught by ‘Ivana Teach’.
2. Find the names of faculty members that either teach to class ‘database systems’ or not.
Write these queries in SQL join Clauses
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