Databases please

Q1. Write a query to display the number of employees who earn the same salary, for each salary between 7000 and 12000. (1 point) Q2. Write a query to display each department name with the sum of its employee's salaries, the minimum salary and maximum salary in each department for which the average salary is between 7000 and 15000.(Ipoint) Q3. Write a query to display street address, country name and region name for each location.(1 point) Q4. Write a query to display all countries' names and the number of locations in each one (including those with no locations). (2points) HR DEPARTMENTS department id department name manager i location LOCATIONS location id strog adress postal code city state province countryd JOB HISTORY employee id start date ond date obid department 1 COUNTRIES country id country regionid EMPLOYEES employee id frame name oma phone hire date job salary commission pci manager id department_id JOBS job id minary max salary REGIONS regionid region name