Can someone help please

3. (20) Consider the relation schemas: faculty - (SSN, last-name, first-name, street, city, state) student (SSN, last-name, first-name, street, city, state) and the following instance: last-name rst name street city state SSN 388-67-9009 Bai 980-67-8765 Jackson 980-67-8765 Robert 435-67-2342 Charles Shuju | Perkins | Baton Rouge TA Tina CourtneyWashington Baton Rouge LA Iowa State Baton Rouge LA (10) Is this instance a legal instance of relation faculty? Why? a. b. (10) Is this instance a legal instance of relation student? Why? 4. (15) I have a relational database schema: Professor (Professorld, name, Deptld, password, address) Transcript (Studentld. CrsCode, Semester, Grade) Student (Studentld, name, Deptid, year, address) CourseOfferings CrsCode Semester Course CrsCode, CrsTitle, CrsDescription) Teaches (Professorld. CrsCode.Semester Write out the relational algebra for the following queries. 1) Find the semesters when course 'operating systems' was offered. 2) Find the names and Deptld of all professors who taught in spring 2010