Question: Using Relational Algebra Suppose you have five tables: I student ( sID , sname, age, major, aID) --- aID is advisor ID, same for faculty

Using Relational Algebra

Suppose you have five tables:

I student (sID, sname, age, major, aID) --- aID is advisor ID, same for faculty ID. course(cno, cname, credits, dept) faculty (fID, name, dept) take(sID, cno, year, semester, grade) (here, grade: 0-100) teach(fID, cno, year, semester)

Please answer the following queries using relational algebra.

1) Who got lower than average grade in CS100? Show sID.

2) Who is the oldest student? Show sname.

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