Hobart_Project One

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Southern New Hampshire University *

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DAD-220-X3

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Mechanical Engineering

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Feb 20, 2024

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docx

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DAD 220 Database Documentation Template Complete these steps as you work through the directions for Project One. Replace the bracketed text with your screenshots and brief explanations of the work they capture. Each screenshot and its explanation should be sized to approximately one quarter of the page, with the description written below the screenshot. Follow these rules for each of the prompts and questions below. Review the example document located in the Project One Supporting Materials for assistance. Step One: Create a Database 1. Navigate to your online integrated development environment (IDE). List and record the SQL commands that you used to complete this step here: EXPLANATION: Before creating my database I used the following commands: chmod +x change_perm.sh ./change_perm.sh mysql;

2. Create a database schema called QuantigrationUpdates. List out the database name. Provide the SQL commands you ran against MySQL to successfully complete this in your answer: EXPLANATION: I used the CREATE DATABASE command to create the QuantigrationUpdates database then to make sure I was successful I listed out my databases and then selected the QuantigrationUpdates database by using the USE command. As you can see, when I typed the word “use” in all caps I received an error message stating that the database was unknown so I tried typing it in lowercase letters and it worked.

3. Using the entity relationship diagram (ERD) as a reference, create the following tables with the appropriate attributes and keys: a. A table named Customers in the QuantigrationUpdates database, as defined on the project ERD. Provide the SQL commands you ran against MySQL to complete this successfully in your answer: EXPLANATION: I used the following commands to create the Customers table: CREATE TABLE Customers ( CustomerID INT PRIMARY KEY, FirstName VARCHAR(25), LastName VARCHAR(25), Street VARCHAR(50), City VARCHAR(50), State VARCHAR(25), ZipCode VARCHAR(10), Telephone VARCHAR(15));

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I was able to make the CustomerID column a Primary Key then I confirmed everything was correct by using the DESCRIBE command. I reviewed how to add a Primary Key and I was shown a different way while reviewing previous live chat videos, but when practicing the query on a different database, the way I was shown left me with some issues so I went back and looked at my previous screenshots to see how I added the Primary Key before on our previous activity. b. A table named Orders in the QuantigrationUpdates database, as defined on the project ERD. Provide the SQL commands you ran against MySQL to complete this successfully in your answer: EXPLANATION: I used the following commands to create the Orders table: CREATE TABLE Orders ( OrderID INT PRIMARY KEY, CustomerID INT, SKU VARCHAR(20), Description VARCHAR(50), FOREIGN KEY(CustomerID) REFERENCES Customers(CustomerID));

I was able to make the OrderID column a Primary Key and the CustomerID column a Foreign Key. I confirmed everything was correct by using the DESCRIBE command again. c. A table named RMA in the QuantigrationUpdates database, as defined on the project ERD. Provide the SQL commands you ran against MySQL to complete this successfully in your answer: EXPLANATION: I used the following commands to create the RMA table: CREATE TABLE RMA ( RMAID INT PRIMARY KEY, OrderID INT, Step VARCHAR(50), Status VARCHAR(15), Reason VARCHAR(15), FOREIGN KEY(OrderID) REFERENCES Orders(OrderID));

I was able to make the RMAID column a Primary Key and the OrderID column a Foreign Key. I confirmed everything was correct by using the DESCRIBE command again. Step Two: Load and Query the Data 1. Import the data from each file into tables.  Use the QuantigrationUpdates database, the three tables you created, and the three CSV files preloaded into Codio.  Use the import utility of your database program to load the data from each file into the table of the same name. You will perform this step three times, once for each table. EXPLANATION: I looked back at my previous screenshots to make sure I typed these queries correctly and I actually practiced these within my other database to make sure they worked.

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2. Write basic queries against imported tables to organize and analyze targeted data. For each query, replace the bracketed text with a screenshot of the query and its output. You should also include a 1- to 3-sentence description of the output.  Write an SQL query that returns the count of orders for customers located only in the city of Framingham, Massachusetts. i. How many records were returned? 505 records were returned. EXPLANATION: I used the following query to give me the count of orders for customers in Framingham, Massachusetts. SELECT COUNT(*) FROM Customers INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID WHERE UPPER(Customers.City) = ‘FRAMINGHAM’ AND UPPER(Customers.State) = ‘MASSACHUSETTS’;  Write an SQL query to select all of the Customers located in the state of Massachusetts.

i. Use a WHERE clause to limit the number of records in the Customers table to only those who are located in Massachusetts. ii. Record an answer to the following question: How many records were returned? 982 records were returned. EXPLANATION: I used both of the following queries to select all customers in Massachusetts. After I realized what my first query resulted in, I made changes and used the second query to give me a count instead of listing all records out. I was unable to screenshot the first query due to having so many records listed on my workspace - I was not able to scroll up to where my query was. SELECT * FROM Customers INNER JOIN Orders ON Customers.CustomerID = Orders.CustomerID WHERE UPPER(Customers.State) = 'MASSACHUSETTS'; SELECT COUNT(*) FROM Customers WHERE UPPER(Customers.State) = 'MASSACHUSETTS';  Write a SQL query to insert four new records into the Orders and Customers tables using the following data: Customers Table CustomerID FirstName LastName StreetAddress City State ZipCode Telephone 100004 Luke Skywalker 15 Maiden Lane New York NY 10222 212-555-1234 100005 Winston Smith 123 Sycamore Street Greensbor o NC 27401 919-555-6623 100006 MaryAnne Jenkins 1 Coconut Way Jupiter FL 33458 321-555-8907 100007 Janet Williams 55 Redondo Beach Blvd Torrence CA 90501 310-555-5678

EXPLANATION: I used the INSERT INTO command to insert the values from the table given into the Customers table within the QuantigrationUpdates database. Then to confirm everything was correct I used the following query: SELECT * FROM Customers WHERE CustomerID IN (100004, 100005, 100006, 100007); Orders Table

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OrderID CustomerID SKU Description 1204305 100004 ADV-24-10C Advanced Switch 10GigE Copper 24 port 1204306 100005 ADV-48-10F Advanced Switch 10 GigE Copper/Fiber 44 port copper 4 port fiber 1204307 100006 ENT-24-10F Enterprise Switch 10GigE SFP+ 24 Port 1204308 100007 ENT-48-10F Enterprise Switch 10GigE SFP+ 48 port EXPLANATION: I used the INSERT INTO command to insert the values from the table given into the Orders table within the QuantigrationUpdates database. Then to confirm everything was correct I used the following query: SELECT * FROM Orders WHERE CustomerID IN (100004, 100005, 100006, 100007);  In the Customers table, perform a query to count all records where the city is Woonsocket, Rhode Island.

i. How many records are in the Customers table where the field “city” equals “Woonsocket”? There are 7 records where the city is Woonsocket. EXPLANATION: I used the SELECT COUNT(*) command to get the number of records from the city of Woonsocket.  In the RMA database, update a customer’s records. i. Write an SQL statement to select the current fields of status and step for the record in the RMA table with an orderid value of “5175.” 1. What are the current status and step? The current Status is Pending, and the current Step is Awaiting customer documentation. EXPLANATION: I used the following query to get the current Status and Step information: SELECT Status, Step FROM RMA WHERE OrderID = 5175; ii. Write an SQL statement to update the status and step for the OrderID , 5175 to status = “Complete” and step = “Credit Customer Account.” 1. What are the updated status and step values for this record?

The updated Status is Complete and the updated Step value is Credit Customer Account. EXPLANATION: I wasn’t thinking and screenshotted these queries separately rather than capturing them in one, but I used the UPDATE command to change the Status and Step values then to confirm my success I used the SELECT * command.  Delete RMA records. i. Write an SQL statement to delete all records with a reason of “Rejected.” 1. How many records were deleted?

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596 records were deleted. EXPLANATION: This step is where I had trouble on the activity, so I made sure to practice this query before attempting to complete this project. I figured out where I went wrong, and I am very thrilled to know that I finally got a number other than 0 as my results this time around. DELETE FROM RMA WHERE Reason = 'Rejected'; 3. Update your existing tables from “Customer” to “Collaborator” using SQL based on this change in requirements. Provide the SQL commands you ran against MySQL to complete this successfully in your answer:

a. Rename all instances of “Customer” to “Collaborator.” EXPLANATION: I used the following queries to rename the table from Customers to Collaborators and CustomerID to CollaboratorID. ALTER TABLE Customers RENAME TO Collaborators; ALTER TABLE Orders DROP FOREIGN KEY Orders_ibfk_1; ALTER TABLE Collaborators CHANGE CustomerID CollaboratorID INT; ALTER TABLE Orders CHANGE CustomerID CollaboratorID INT; I had some trouble creating these queries during my practice session, but I was able to work through my mistakes by reviewing some resources and I was able to figure out how to be successful in making the changes. To make sure I was successful I used the DESCRIBE command to confirm the changes were made to both the Collaborators table and the Orders table.

4. Create an output file of the required query results. Write an SQL statement to list the contents of the Orders table and send the output to a file that has a .csv extension. EXPLANATION: I reviewed my previous screenshot to create the query to create the file QRMAOrdersData.csv. I did not practice this query since I was not sure how it would affect my work for the project, so I was happy to see that my query was successful. SELECT * FROM Orders INTO OUTFILE '/home/codio/workspace/QRMAOrdersData.csv' FIELDS TERMINATED BY ',' LINES TERMINATED BY '\r\n';

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