very confused can you explain too?

your choice. 4.4 Consider the following database instance, which contains information about employees and the projects to which they are assigned: Emp empid E101 lastName Smith Jones Adams E105 E110 E115 Smith Assign empId projno hours E101 P10 200 E101 P15 300 E105 P10 400 E110 P15 700 E110 P20 350 E115 P10 300 E115 P20 400 projno Proj proj Name budget P10 Hudson 500000 P15 Columbia 350000 P20 Wabash 350000 P23 Arkansas 600000 Show ALL the tables (including the intermediate ones) that would be produced by each of the following relational algebra commands: a. SELECT Emp WHERE last Name Adams' GIVING TI TI JOIN Assign GIVING T2 Symbolically this is (0 astName="Adams (Emp)) ||| Assign b. SELECT Proj WHERE budget > 400000 GIVING T1 T1 JOIN Assign GIVING T2 PROJECT T2 OVER empId GIVING T3 Symbolically this is Temple (Cobudget>400000 II budget>200000 (Proj))x|Assign) C. PROJECT Assign OVER projNo GIVING T1 T1 JOIN Proj GIVING T2 PROJECT T2 OVER budget GIVING T3 Symbolically this is Moudget projno (Assign) |X| Proj)