Question: 1. What is SQL view? 2. What is the purpose of SQL view? 3. Create a SQL view in the HR database to show Employee_id,

1. What is SQL view? 2. What is the purpose of SQL view? 3. Create a SQL view in the HR database to show Employee_id, Employee_full_name, Department_name, Street_address, City, State_province, Country_name. 4. Write SQL to calculate the standard deviation among the average salary for each job in the HR database

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