These questions use the insurance database. Please remember that this is employer provided insurance covering workers and possibly their family...

These questions use the insurance database. Please remember that this is employer provided insurance covering workers and possibly their family members.1. List by company name, payer ID, company name, contact name and phone for every payer with a mailing address.2. What is the average length of the policy numbers? (Hint: NULL = 0)3. How many payers and how many insureds have an address in 44444 zip code? (Hint: This is not exactly a single SELECT.)4. How many insureds live in the USA?5. Display, by company, the company name, contact name and phone number for any payer who has no insureds.