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 Diagram
An 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.
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:
Before you begin, do the following: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.
Make sure to review the example RMA ERD that you should be using as a guide before you begin.
Review the module resources on how to capture screenshots, if necessary.
Please note before you begin that the three data files being used for this project are preloaded into Codio:
Import the data from each file into tables.
Use the QuantigrationRMA 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’ll perform this step three times, once for each table.
Write basic queries against imported tables to organize and analyze targeted data.
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.
Write an SQL query that returns the count of orders for customers located only in the city of Framingham, Massachusetts.
This query will use a table join between the Customers and Orders tables. The query will also use a WHERE clause.
How many records were returned?
Write an SQL query to select all of the customers located in the state of Massachusetts.
Use a WHERE clause to limit the number of records in the customers table to only those that are located in Massachusetts.
Record an answer to the following question: How many records were returned?
Write an SQL query to insert four new records into the Orders and Customers tables using the following data:Customers Table CustomerIDFirstNameLastNameStreetAddressCityStateZip CodeTelephone
100004 LukeSkywalker17 Maiden LaneNew YorkNY10222212-555-1234
100005WinstonSmith128 Sycamore Street GreensboroNC27401919-555-6623
100006MaryAnneJenkins2 Coconut WayJupiterFL33458321-555-8907
100007JanetWilliams58 Redondo Beach BlvdTorrenceCA90501310-555-5678
1204305 100004ADV-24-10C Advanced Switch 10GigE Copper 24 port
1204306100005ADV-48-10F Advanced Switch 10 GigE Copper/Fiber 44 port copper 4 port fiber
1204307100006ENT-24-10F Enterprise Switch 10GigE SFP+ 24 Port
1204308100007ENT-48-10F Enterprise Switch 10GigE SFP+ 48 port
In the Customers table, perform a query to count all records where the city is Woonsocket and the state is Rhode Island.
How many records are in the customers table where the field “city” equals “Woonsocket”?
In the RMA database, update a customer’s records.
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.”
What are the current status and step?
Write an SQL statement to update the status and step for the OrderID, 5175 to status = “Complete” and step = “Credit Customer Account.”
What are the updated status and step values for this record? Provide a screenshot of your work.
Delete RMA records.
Write an SQL statement to delete all records with a reason of “Rejected.”
How many records were deleted? Provide a screenshot of your work.
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.
What to Submit
Submit your responses in the Module Four Major Activity Database Documentation Template. All of your answers should go in the correct locations in that document and then be submitted for grading and feedback. Each screenshot and its explanation should be sized to approximately one quarter of the page, with a description written below the screenshot. This activity and the feedback from it will directly connect to the second step in Project One.
The following resources support your work on the project:
Document: Database Documentation Template Example
Use this document for expectations of what your assignment should look like.
Document: Quantigration RMA Diagram
Make sure to review the example RMA entity relationship diagram (ERD) that you should be using as a guide before you begin. A text version is also available: Quantigration RMA ERD Text Version.