Q1. Let consider the given schemas and answer the given problems:

Branch = (Branch_name, assets, Branch_city)
Customer = (Customer_name, street, customer_city)
Deposit = (Branch_name, account_number, customer_name,balance)
Borrow = (Branch_name, loan_number, customer_name, amount)
Client = (Customer_name, banker_name)

a) prepare down a relational algebra query which finds customers who have a balance over 1000.

b) prepare down a relational algebra query which finds out the clients of banker Agassi and the city they live in.

c) prepare down a query in tuple calculus to determine all customers who encompass a loan amount of more than 1200.

d) prepare down a query in domain calculus to determine all customers who encompass a loan amount of more than 1200.

Q2. Describe the given integrity constraints:

a) Domain

b) Entity

c) Referential integrity