Consider the following relational schema
employee(person_name, street, city)
works(person_name, company_name, salary)
company (company_name, city)
manages (person_name, manager_name)
write relational – algebra queries to find the accounts help bymore than two customers in the following ways:
1. Using an aggregate function
2. Without using any aggregate function
Expert Answer
An answer will be send to you shortly. . . . .