Overview
It’s now time to populate the QuantigrationRMA database from the Module Three major activity with records and run some basic queries against those tables. You’ll need to import data from the CSV data files into the tables, perform queries against those tables, and create an output listing to the screen of the query results.
Description of QuantigrationRMA Entity Relationship DiagramAn entity relationship diagram (ERD) is a visual representation of a database’s objects and relationships between those objects. It is a blueprint for creating a database, its tables (entities), and their attributes (fields). It also shows the data types and the relationships between entities (cardinality constraints) and keys in each table. In our example, we have three tables named customers, orders, and rma. These tables are the boxes that have several fields such as FirstName, LastName, OrderID, and so on. Each table also contains a primary key denoted by “PK” on the ERD. There is a standard notation called crow’s feet that shows the connection between tables. These lines represent different entity relation types such as one-to-one (1:1) or one-to-many (1:N), as visually depicted in the ERD.
Directions
In the Module Three Major Activity, you created a customer return merchandise authorization (RMA) database using SQL commands. To complete your objectives in this activity, follow these directions:
Make sure to download the Module Four Major Activity Database Documentation Template for this assignment. You’ll need to place your answers and screenshots in this document and then submit it for grading.
Check the Database Documentation Template Example for clarity on expectations of what yours should look like.
Review the module resources on how to capture screenshots, if necessary.
Use the QuantigrationRMA database, the three tables you created, and the three CSV files preloaded into Codio.
Write an SQL query that returns the count of orders for customers located only in the city of Framingham, Massachusetts.
How many records were returned?
Write an SQL query to insert four new records into the Orders and Customers tables using the following data:
In the Customers table, perform a query to count all records where the city is Woonsocket and the state is Rhode Island.
What are the current status and step?
Write an SQL statement to delete all records with a reason of “Rejected.”
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
DAD 220 Module Four Major Activity Database Documentation Template
Complete these steps as you work through the directions for this activity. 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 for assistance.
Follow Steps 1 through 4 from the Module Three Major Activity only to generate tables for this
assignment.
1. Import the data from each file into tables.
A. Use the import utility of your database program to load the data from each file into the
table of the same name. You’ll perform this step three times, once for each table.
B. Provide the SQL commands you ran against MySQL to complete this successfully in your
answer.
[Insert screenshot and brief explanation here.]
2. Write basic queries against imported tables to organize and analyze targeted data.
A. For each query, include a screenshot of the query and its output. You should also
include a 1- to 3-sentence description of the output.
B. 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?
[Insert screenshot and brief explanation here.]
C. 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 that are located in Massachusetts.
ii.
Record an answer to the following question: How many records were returned?
[Insert screenshot and brief explanation here.]
D. Write an SQL query to insert four new records into the Orders and Customers tables
using the following data:
i.
Customers Table
CustomerID
FirstName
Lastname
StreetAddress
City
State
ZipCode
Telephone
100004
Luke
Skywalker
17 Maiden Lane
New York
NY
10222
212-555-1234
100005
Winston
Smith
128 Sycamore Street
Greensboro
NC
27401
919-555-6623
100006
MaryAnne
Jenkins
2 Coconut Way
Jupiter
FL
33458
321-555-8907
100007
Janet
Williams
58 Redondo Beach
Blvd
Torrence
CA
90501
310-555-5678
[Insert screenshot and brief explanation here.]
ii.
Orders Table
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
[Insert screenshot and brief explanation here.]
E. 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”?
[Insert screenshot and brief explanation here.]
F. 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?
[Insert screenshot and brief explanation here.]
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? Provide a
screenshot of your work.
[Insert screenshot and brief explanation here.]
G. Delete RMA records.
i.
Write an SQL statement to delete all records with a reason of “Rejected.”
1. How many records were deleted? Provide a screenshot of your work.
[Insert screenshot and brief explanation here.]
3. Create an output file of the required query results.
A. Write an SQL statement to list the contents of the orders table and send the output to a
file with a .csv extension.
[Insert screenshot and brief explanation here.]
