Course Solutions Uncategorized (Solved) : Consider Following Relational Schema Employee Personname Street City Works Personname Comp Q33026676 . . . .

(Solved) : Consider Following Relational Schema Employee Personname Street City Works Personname Comp Q33026676 . . . .

 

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

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