Show SQL statements to count the number of rows and to list the top 15 rows of the RETAIL_ORDER…

Show SQL statements to count the number of rows and to list the top 15 rows of the RETAIL_ORDER table. Suppose you receive the following two tables: DEPARTMENT (DepartmentName, BudgetCode) EMPLOYEE (EmployeeNumber, EmployeeLastName, EmployeeFirstName, EmailAddress, DepartmentName) and you conclude that EMPLOYEE.DepartmentName is a foreign key to DEPARTMENT.DepartmentName. Show SQL for determining whether the following referential integrity constraint has been enforced: DepartmentName in EMPLOYEE must exist in DepartmentName in DEPARTMENT