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[answered] Assignment Eleven Value: 15 Points Thursday, November 17th,


This is an oracle sql/pl assignment. it is a homework assignment look at file


Assignment Eleven

 

Value:

 

Due: 15 Points

 

Thursday, November 17th, 11:00 PM Getting Started

 

This assignment will use three tables of people's first and last names. The first and

 

last names have different field names in each table. They are called FName and

 

LName in the A11X table, FN and LN in the A11Y table and Name1 and Name2 in

 

the A11Z table. Each table has a simple primary key (named X, Y and Z). The A11X

 

table also has field named XBoss that serves as a pointer to each person's

 

immediate supervisor or boss. There are no explicit binary relationships between the three tables. The primary key

 

of one table has nothing to do with the primary keys of the other two tables. John

 

Jones might be in all three tables, but his X, Y and Z primary keys will be completely

 

different.

 

Execute the following three commands to create the tables. Click for an easier version of the commands to copy/paste into Oracle

 

Next, download/extract the Excel spreadsheet named Assignment11.xlsx that

 

contains data for three tables. The spreadsheet is available in compressed (zip)

 

format:

 

Download Zip File

 

The spreadsheet has three sheets. The first sheet will be used to import 500 records

 

into A11X, the second sheet will be used to import 500 records into A11Y and the

 

third sheet will be used to import 500 records into A11Z. Be careful. You must

 

import the correct sheet for each table. (If you don't know how to import data from

 

different sheets, then read the instructions for the Office/Employee/Dependent

 

tables from the lectures.)

 

You should verify that you correctly imported 500 records into each table.

 

SELECT 'A11X' As "TABLE", Count(X) As RECORDS

 

FROM A11X

 

UNION

 

SELECT 'A11Y', Count(Y)

 

FROM A11Y UNION

 

SELECT 'A11Z', Count(Z)

 

FROM A11Z

 

Each table contains the names of 500 people. But, as the following diagram shows,

 

there is some overlap. For instance, the names of 27 people appear in all three

 

tables. And, the names of 67 people appear in A11X and A11Y, but not in A11Z. 392

 

names appear in A11X, but not in either of the other tables. Of the combined 1500

 

records in the three tables, there are only 1181 different names. Note About Case Sensitivity

 

All of the data in the three tables is properly capitalized (e.g., John Jones). The views

 

you write for this assignment will not need to deal with the case sensitivity issues of

 

Oracle. Note About Tables

 

Be sure to use the correct tables for each task. The first three tasks will use the

 

A11X table. Task 4 will use the A11Y and A11Z tables. Task 5 will use all three

 

tables. Task 1 (3 points)

 

Create a view named A11T1 that will display the concatenated first and last names

 

(e.g., Mary Smith) of the people in A11X who have at least 3 direct subordinates.

 

The column heading should be BossName and the rows should be sorted by last

 

name, then first name. Note: A direct subordinate of a boss is someone who directly reports to the boss

 

(i.e., someone whose XBoss foreign key equals the boss' primary key.) Task 2 (3 points)

 

Create a view named A11T2 that will display the number of people in A11X who

 

have at least one subordinate. The column heading should be Bosses. Only one row

 

will be displayed, so the ORDER BY clause is unnecessary. Task 3 (3 points)

 

Create a view named A11T3 that will display the number of people in A11X who

 

have no subordinates. The column heading should be Not_Bosses. Again, only one

 

row will be displayed, so the ORDER BY clause is unnecessary. Task 4 (3 points)

 

Tables A11Y and A11Z each have 500 records. 211 of the people's names appear in

 

both tables (i.e., 27+184 in the Venn diagram).

 

Create a view named A11T4 that will display the concatenated first and last names

 

of the 789 people who appear in one or both of the tables. The column heading

 

should be Person and the rows should be sorted by last name, then first name.

 

Note: Timothy Austin, Michelle Blanco and 209 other people are in both tables. They

 

should be displayed one time, not two times, in the A11T4 view. Task 5 (3 points)

 

Tables A11X, A11Y and A11Z each have 500 records. The names of 27 people

 

appear in all three tables.

 

Create a view named A11T5 that will display the concatenated first and last names

 

of the 27 people who appear in all three tables. The column heading should be

 

Person and the rows should be sorted by last name, then first name. Task 6 Bonus (2 extra points)

 

Tables A11X, A11Y and A11Z each have 500 records. The names of 265 people

 

appear in two of the tables, but not in all three (i.e., 67+14+184 in the Venn

 

diagram).

 

Create a view named A11T6 that will display the concatenated first and last names

 

of the 265 people who appear in exactly two of the three tables. The column

 

heading should be Person and the rows should be sorted by last name, then first

 

name. Note About Multi-Step Solutions You may decide to break complex tasks into multiple steps. If you do, then you are

 

free to use either the multi-view approach or the subquery approach to implement

 

your multi-step solutions. If you use the multi-view approach, then be sure to use

 

unique view names for each of the steps. The final step must use the name

 

specified in the task. (For example, if you break Task 1 into 5 steps, then you might

 

name the first four views A11T1A, A11T1B, A11T1C and A11T1D. Your last view

 

must be named A11T1. If you name it A11T1E, then it will not be graded.) Note About Grading

 

If a task says to create a view named XYZ, then don't name it ABC. Views with the

 

wrong name will not be graded.

 

If a task says to use a column heading of XYZ, then don't use ABC.

 

If a task says to display columns A, B and C, then display them in that left to right AB-C order. B-C-A is incorrect.

 

If a task says to display columns A, B and C, then don't display any additional

 

columns. A-B-C-D is incorrect.

 

If a task says to display concatenated names, then include exactly one space

 

between the first and last names (i.e., John Doe, not JohnDoe or Doe John). Deliverable

 

Nothing will be physically turned in for this assignment. Your work will be graded

 

directly from your McCombs Oracle database.

 

Grading will begin at 11:00 PM on Thursday. If any changes are made after that

 

point, then the entire assignment will be counted as late.

 

Do not modify or drop the A11X, A11Y and A11Z tables or the A11T# views until you

 

have received your grade for the assignment.

 


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