$5.$ Based on the ERD above, create the following query:

a$.$ Display customer data who have purchased products with the name

product must have at least $2$ words and start with the letter A

b$.$ Display customer data along with the total number of x transactions they have made

do it sorted by the most transactions

c$.$ Create a trigger to add new customer data every time there is one

sales transactions from new customers that are not yet in the customer table

d$.$ Show data on the $2$ most expensive products ever purchased by customers

Odd customer IDs using NESTED QuerySALES ORDER