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Solve the next tasks in RELATIONAL ALGEBRA! Use the ScottDB schema to the solution. 1 8 . Display the employees ( empno , ename, dname

Solve the next tasks in RELATIONAL ALGEBRA! Use the ScottDB schema to the solution.

18 .

Display the employees

(

empno

,

ename, dname

)

whose salary more than

2300

!

4

points

19 .

Display the average salary of each department!

4

points

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