Consider the following database schema:

Companies $($comp$\_$id$,$ Comp$\_$name, address, dep$\_$number$)$

Employees $($Number$,$ Name,Age, Salary$)$

Departments $($dep$\_$number, dep$\_$name$)$

Supervision $($Head$,$ Emp$)$

Query: Find the registration numbers of the supervisors of the employees earning more than $100$

Jordanian dinars. $($In Relational Algebra$).$

Query: Find the registration numbers of the supervisors of the employees earning more than $100$

Jordanian dinars. $($ In Domain Relational Calculus$).$