1A. Consider the bank database schema as below. loan (loan_number, branch_name, amount) account (account_number, branch_name, balance) depositor (customer_name, account_number). Give a relational algebra expression for following queries: a. Find all loan numbers with a loan value greater than $25,000. b. Find the names of all depositors who have an account with a value greater than $10,000 at the "Manipal" branch.

1A. Consider the bank database schema as below. loan (loan_number, branch_name, amount) account (account_number, branch_name, balance) depositor (customer_name, account_number). Give a relational algebra expression for following queries: a. Find all loan numbers with a loan value greater than $25,000. b. Find the names of all depositors who have an account with a value greater than $10,000 at the "Manipal" branch.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

1A. Consider the bank database schema as below.
loan (loan_number, branch_name, amount)
account (account_number, branch_name, balance)
depositor (customer_name, account_number).
Give a relational algebra expression for following queries:
a. Find all loan numbers with a loan value greater than $25,000.
b. Find the names of all depositors who have an account with a value greater than $10,000 at
the "Manipal" branch.
1B. Identify and list at least 3 Tables with 5 attributes (Including primary key), which might
be used to create Database for a Social-Networking system like Facebook.

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