1. Consider the following tables in a relational database. Provide the appropriate SQL statements necessary to answer the queries that follow. Primary keys are underlined. Foreign key fields have an asterisk at the end of the field. CUSTOMERS CUSTOMER-NO, NAME, ADDRESS, REGION, BALANCE SALESPERSONS (EID NAME, OFFICE, PHONE#, DATE-HIRED, SALARY) INVOICES (INVOICE-NO, DATE, CUSTOMER-NO* EDD* AMOUNT) ITEMS-SOLD (INVOICE-NO, ITEM-NO* QUANTITY-SOLD, SELLING-PRICE) INVENTORY (ITEM-NO, DESCRIPTION, WEIGHT, QUANTITY-ON-HAND) a) What are the names and phone numbers of salespersons who were involved in sales of items weighing more than 20 lbs? b) List the description and quantity on hand of all items sold to customers with balances greater than $10,000 1. Consider the following tables in a relational database. Provide the appropriate SQL statements necessary to answer the queries that follow. Primary keys are underlined. Foreign key fields have an asterisk at the end of the field. CUSTOMERS CUSTOMER-NO, NAME, ADDRESS, REGION, BALANCE SALESPERSONS (EID NAME, OFFICE, PHONE#, DATE-HIRED, SALARY) INVOICES (INVOICE-NO, DATE, CUSTOMER-NO* EDD* AMOUNT) ITEMS-SOLD (INVOICE-NO, ITEM-NO* QUANTITY-SOLD, SELLING-PRICE) INVENTORY (ITEM-NO, DESCRIPTION, WEIGHT, QUANTITY-ON-HAND) a) What are the names and phone numbers of salespersons who were involved in sales of items weighing more than 20 lbs? b) List the description and quantity on hand of all items sold to customers with balances greater than $10,000