From SQL Commands to Relational Algebra Operations r SQL: I SELECT * I FROM Teaching Assistant; Result: teaching AssistantID SSN studentID salary 37 478902824 379 2500 92 352761903 574 5000 Relational Algebra:? From SQL Commands to Relational Algebra Operations SQL: I SELECT teaching AssistantID, salary, SSN I FROM TeachingAssistant; teaching AssistantID salary SSN Result: 37 2500 478902824 92 5000 352761903 Relational Algebra: ? From SQL Commands to Relational Algebra Operations SQL: SELECT * | I FROM Course WHERE instructorID IS NOT NULL AND teachingAssistantID IS NULL; Result: courseNo MATH105 title sectionNo units deptCode instructorID teaching AssistantID prerequisite Algebra 1 3 math 76 None Relational Algebra:? From SQL Commands to Relational Algebra Operations SELECT i.instructorID, fName, IName, courseNo, title, section No I FROM I WHERE Instructor i, Course c i.instructorID = c.instructorID SQL: | Result: instructorID fName IName courseNo title sectionNo 76 Andy Chou MATH105 Algebra 1 44 Jennifer Furman ACCT101 Accounting I 1 44 Jennifer Furman ACCT101 Accounting I 2 89 Daniel Pradmore ACCT102 Accounting II 1 Relational Algebra:?