1)Please write queries based on the following requirements using the tables and data in the class16setup.sql file.

a. List unique item classes stored in your database.

b. List the warehouse number and the number of different parts stored in each warehouse, only include those warehouses with more than 2 different parts.

c. List the warehouse number and the maximum number of units on hand for parts stored in each of the warehouses. Rename the new column Max_UOH.

d. List the part number, total dollar amount for each part stored, and the warehouse number for the part. Rename the calculated column TOTAL_AMOUNT. TOTAL_AMOUNT=Units_ON_HAND*UNIT_PRICE

e. List the item class and total number of units on hand for each item class. Rank your results in descending order on the total number of units on hand.

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SQL soucrce code (https://ufile.io/9ytkc):

create table sales_rep (

slsrep_number number(5) constraint pk_sales_rep primary key,

srlast varchar2(8),

srfirst varchar2(7),

street varchar2(13),

city varchar2(7),

state varchar2(2),

zip_code number(5),

total_commission number(7,2),

commission_rate number(3,2));

insert into sales_rep values(3, 'Jones', 'Mary', '123 Main', 'Grant',

'MI', 42919, 2150, .05);

insert into sales_rep values(4, 'Morton', 'Tom', '300 College', 'Flint',

'MI', 49227, 2075, .06);

insert into sales_rep values(6, 'Smith', 'William', '102 Raymond', 'Ada',

'MI', 49441, 4912.5, .07);

insert into sales_rep values(12, 'Diaz', 'Miguel', '419 Harper',

'Lansing', 'MI', 49224, 2150, .05);

create table customer

(c_number number(3) not null,

clast varchar2(8),

cfirst varchar2(7),

street varchar2(13),

city varchar2(7),

state varchar2(2),

zip_code number(5),

balance number(7,2),

credit_limit number(4),

slsrep_number number(3),

constraint customer_pk primary key (c_number),

constraint fk1_customer foreign key (slsrep_number) references

sales_rep(slsrep_number));

insert into customer values

(124, 'Adams', 'Sally', '418 Oak', 'Lansing', 'MI', 49224, 818.75, 1000,

3);

insert into customer values

(256, 'Samuels', 'Ann', '215 Pete', 'Grant', 'MI', 49219, 21.5, 1500, 6);

insert into customer values

(311, 'Charles', 'Don', '48 College', 'Ira', 'MI', 49034, 825.75, 1000,

12);

insert into customer values

(315, 'Daniels', 'Tom', '914 Cherry', 'Kent', 'MI', 48391, 770.75, 750,

6);

insert into customer values

(405, 'Williams', 'Al', '519 Watson', 'Grant', 'MI', 49219, 402.75, 1500,

12);

insert into customer values

(412, 'Adams', 'Sally', '16 Elm', 'Lansing', 'MI', 49224, 1817.75, 2000,

3);

insert into customer (c_number, clast, cfirst, street, city, state,

zip_code, balance, credit_limit) values

(522, 'Nelson', 'Mary', '108 Pine', 'Ada', 'MI', 49441, 98.75, 1500);

insert into customer values

(567, 'Dinh', 'Tran', '808 Ridge', 'Harper', 'MI', 48421, 402.40, 750, 6);

insert into customer values

(587, 'Galvez', 'Mara', '512 Pine', 'Ada', 'MI', 49441, 114.60, 1000, 6);

insert into customer values

(622, 'Martin', 'Dan', '419 Chip', 'Grant', 'MI', 49219, 1045.75, 1000,

3);

create table part (

part_number varchar2(5) constraint pk_part primary key,

part_description varchar2(12),

units_on_hand number,

item_class char(2),

warehouse_number number,

unit_price number(7,2));

insert into part

values ('AX12', 'Iron', 104, 'HW', 3, 24.95);

insert into part

values ('AZ52', 'Dartboard', 20, 'SG', 2, 12.95);

insert into part

values ('BA74', 'Basketball', 40, 'SG', 1, 29.95);

insert into part

values ('BH22', 'Cornpopper', 95, 'HW', 3, 24.95);

insert into part

values ('BT04', 'Gas Grill', 11, 'AP', 2, 149.99);

insert into part

values ('BZ66', 'Washer', 52, 'AP', 3, 399.99);

insert into part

values ('CA14', 'Griddle', 78, 'HW', 3, 39.99);

insert into part

values ('CB03', 'Bike', 44, 'SG', 1, 299.99);

insert into part

values ('CX11', 'Blender', 112, 'HW', 3, 22.95);

insert into part

values ('CZ81', 'Treadmill', 68, 'SG', 2, 349.95);

create table orders (

order_number number(5) constraint pk_orders primary key,

order_date date,

c_number number(3) constraint fk1_orders references customer(c_number));

insert into orders values (12489, '02-AUG-2013', 124);

insert into orders values (12491, '02-AUG-2013', 311);

insert into orders values (12494, '04-AUG-2013', 315);

insert into orders values (12495, '04-AUG-2013', 256);

insert into orders values (12498, '05-AUG-2013', 522);

insert into orders values (12500, '05-AUG-2013', 124);

insert into orders values (12504, '05-AUG-2013', 522);

create table order_line (

order_number number(5),

part_number varchar2(5),

number_ordered number,

quoted_price number(6,2),

constraint pk_order_line primary key (order_number, part_number),

constraint fk1_order_line foreign key (order_number) references

orders(order_number),

constraint fk2_order_line foreign key (part_number) references

part(part_number));

insert into order_line values (12489, 'AX12', 11, 21.95);

insert into order_line values (12491, 'BT04', 1, 149.99);

insert into order_line values (12491, 'BZ66', 1, 399.99);

insert into order_line values (12494, 'CB03', 4, 279.99);

insert into order_line values (12495, 'CX11', 2, 22.95);

insert into order_line values (12498, 'AZ52', 2, 12.95);

insert into order_line values (12498, 'BA74', 4, 24.95);

insert into order_line values (12500, 'BT04', 3, 149.99);

insert into order_line values (12504, 'CZ81', 2, 325.99);