gs gs114 Intermediate and Advanced SQL - The Relational Algebra - Quiz No.1

gs gs114 Relational Database Management System Quiz

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Question 4: What does the following relational operation perform?
ρx(A1,A2,A3…) (E)
Question 5: What does the following relational algebra expression do?
σamount > 1200 (loan)
Question 8: Πcustomer_name, loan_number, amount (borrower ⋈loan)
What does the above expression perform?


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