Provide a Crows Foot ERD using a specialization hierarchy for the following scenario in a business environment. Much like other companies, the Walsh Logging Company maintains information about its customers. Each of the records for the Walsh Logging Company customer have the following information: unique customer number, name, account open date, customer type, and yearly order amount. The information that should be recorded / kept is the customers federal employment identification number (EIN). There should also be a sales transactions table which tracks sales transactions for the customers (think of the fields that should be collected). As far as data relationships, there can only be one customer but there may be zero, one or more transactions assigned to that customer.