I need the answer for  Q4 in the attachment ,it already answered before but I can't upload it

branch(branch name, branch city, assets)

customer (customer name, customer street, customer city)

loan (loan number, branch name, amount)

borrower (customer name, loan number)

account (account number, branch name, balance)

depositor (customer name, account number)

Give an expression in the relational algebra for each of the following

queries:

a. Find all loan numbers with a loan value greater than $50,000.

b. Find the names of all depositors who have an account with a value greater

than $9,000.

c. Find the names of all depositors who have an account with a value greater

than $8,000

at the ?Uptown? branch.

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Answered

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Sep 13, 2020

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