Suppose you work at a bank as a data analyst. Your main job is to analyze the data stored in their database. The database has five tables, whose schema is shown as below. Primary keys attributes are underlined and foreign keys are noted in the superscript. Customer = {customerID, firstName, lastName, income, birthDate} Account = {accNumber, type, balance, branchNumber FK-Branch} Owns = {customer DFK-Customer, accNumberFK-Account} Transaction = {transNumber, accNumber"K-Account, amount} Employee = {ssn, firstName, lastName, salary, branchNumber FK-Branch Branch = {branch Number, branchName, managerSSNFK-Employce, budget} The answer to each question should be a single SQL query. You must order each query as described in the question, order is always ascending unless specified otherwise Every column in the result should be named. So if the query ask you to return something like income times 10, make sure you include an AS statement to name the column. While your question will not be assessed on their efficiency, marks may be deducted if unnecessary tables are included in the query (e.g., including both Owns and Customer when you only require the customerID of customers who own accounts). You may use some date functions in the following questions. In this homework, you should refer to the date and time functions of MySQL (which is also compatible with MariaDB). For more details, please refer to this page. In this homework, you are NOT allow to use JOIN keyword or subqueries. 5. Count the number of joint accounts (i.e., accounts owned by at least two different customers) in New York branch. 6. Return customerID, first name, last name, and income of customers who owns an account with balance greater than $5,000 in either Philadelphia branch or New York branch (not in both branches). 7. Return the customer IDs of customers whose accounts have no transactions with amounts of which the absolute value is less than $3,000 (i.e. all their transactions are either greater than or equal to $3,000 or less than or equal to -$3,000). 8. Return branch name of branches whose budget is less than the sum of salaries for all its employees