4) Insert a new invoice record into the invoices table. Choose relevant values for the fields. 5) Delete the invoice inserted in Problem 4. You can use the values you have chosen in Problem 4 to locate the record. 6) List the vendors who have a zip code that is common with at least another vendor. Create proper aliases for column headings to return the vendor's name and zip code. Sort the result table in ascending order of vendor zip code and make sure there are no duplicate rows. 7) Find the top 5 line items with the largest line_item_amount that belongs to vendor "Federal Express Corporation". Return the vendor name, invoice number and line_item_amount of these 5 items. 8) Select all vendors who have not submitted an invoice. Return a result table that contains the vendor's name and city. Sort by vendor name in descending order. 4) Insert a new invoice record into the invoices table. Choose relevant values for the fields. 5) Delete the invoice inserted in Problem 4. You can use the values you have chosen in Problem 4 to locate the record. 6) List the vendors who have a zip code that is common with at least another vendor. Create proper aliases for column headings to return the vendor's name and zip code. Sort the result table in ascending order of vendor zip code and make sure there are no duplicate rows. 7) Find the top 5 line items with the largest line_item_amount that belongs to vendor "Federal Express Corporation". Return the vendor name, invoice number and line_item_amount of these 5 items. 8) Select all vendors who have not submitted an invoice. Return a result table that contains the vendor's name and city. Sort by vendor name in descending order