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9 changes: 9 additions & 0 deletions 02_activities/assignments/DC_Cohort/Assignment1.md
Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,8 @@ Please do not pick the exact same tables that I have already diagrammed. For exa
- <img src="./images/01_farmers_market_conceptual_model.png" width="600">
- The column names can be found in a few spots (DB Schema window in the bottom right, the Database Structure tab in the main window by expanding each table entry, at the top of the Browse Data tab in the main window)

## embedding my diagram here
![conceptual model between customer purchases and customer](farmersmarket.drawio.png)
***

## Section 2:
Expand Down Expand Up @@ -204,6 +206,13 @@ Link if you encounter a paywall: https://archive.is/srKHV or https://web.archive
Consider, for example, concepts of fariness, inequality, social structures, marginalization, intersection of technology and society, etc.



```
Your thoughts...
one value system I can think of is the social structure of race. This can be found often when filling out legal, government, or medical forms.
Like gender mentioned in the article, often race categories that we have to select from are too 'binary'. Many people are mixed race but are
forced to choose one option to identify as in these documents which can be confusing and creating unnecessary biases when interacting with the
people/administrators that have access to these forms. For example, someones appearance may not match another peoples preconceived idea
of what they should look like. As well, I feel that it may force people to unconsciously to identify with a single category rather than embracing
who they are and their diverse background.
```
12 changes: 11 additions & 1 deletion 02_activities/assignments/DC_Cohort/Assignment2.md
Original file line number Diff line number Diff line change
Expand Up @@ -54,7 +54,10 @@ The store wants to keep customer addresses. Propose two architectures for the CU
**HINT:** search type 1 vs type 2 slowly changing dimensions.

```
Your answer...
Your answer...

Type 1: this architecture will overwrite data with new values. This table will store 1 row per customer with their street address, city, province, country, postal code, customerID, dateofupdate to track when it was last changed.
Type 2: this architecture will store historical data and not overwrite when a new address is added. The table will store each new address per customer per row with their street address, city, province, country, postal code, customerID, dateadded (to track when this address was entered), and activeaddress(a YES/NO or any boolean data type that marks if this is their current address to be used)
```

***
Expand Down Expand Up @@ -184,4 +187,11 @@ Consider, for example, concepts of labour, bias, LLM proliferation, moderating c

```
Your thoughts...
The ethical issues important to this story are:
Labour exploitation: the first part of the article touches on the forgotten contributions
of human labour and skill in the industrialized world, where we in developed countries
do not consider the human need in the product of our everyday fast products that we always
assume as been automated by technology. In the same way humans are at the root of clothing manufacturing,
humans are also at the root of machine learning, neural networks and AI, being paid very little for their irreplaceable work

```
89 changes: 68 additions & 21 deletions 02_activities/assignments/DC_Cohort/assignment1.sql
Original file line number Diff line number Diff line change
Expand Up @@ -4,18 +4,21 @@

--SELECT
/* 1. Write a query that returns everything in the customer table. */


SELECT *
FROM customer

/* 2. Write a query that displays all of the columns and 10 rows from the cus- tomer table,
sorted by customer_last_name, then customer_first_ name. */


SELECT *
FROM customer
ORDER BY customer_last_name, customer_first_name
LIMIT 10

--WHERE
/* 1. Write a query that returns all customer purchases of product IDs 4 and 9. */


SELECT *
FROM customer_purchases
WHERE product_id = 4 OR product_id= 9

/*2. Write a query that returns all customer purchases and a new calculated column 'price' (quantity * cost_to_customer_per_qty),
filtered by customer IDs between 8 and 10 (inclusive) using either:
Expand All @@ -24,47 +27,85 @@ filtered by customer IDs between 8 and 10 (inclusive) using either:
*/
-- option 1


-- option 2


SELECT*,
(quantity*cost_to_customer_per_qty )AS price
FROM customer_purchases
WHERE customer_id BETWEEN 8 AND 10
ORDER BY customer_id

--CASE
/* 1. Products can be sold by the individual unit or by bulk measures like lbs. or oz.
Using the product table, write a query that outputs the product_id and product_name
columns and add a column called prod_qty_type_condensed that displays the word “unit”
if the product_qty_type is “unit,” and otherwise displays the word “bulk.” */


SELECT product_id,
product_name,
CASE WHEN product_qty_type = 'unit' THEN 'unit'
ELSE 'bulk'
END as prod_qty_type_condensed
FROM product

/* 2. We want to flag all of the different types of pepper products that are sold at the market.
add a column to the previous query called pepper_flag that outputs a 1 if the product_name
contains the word “pepper” (regardless of capitalization), and otherwise outputs 0. */


SELECT product_id,
product_name,
CASE WHEN product_qty_type = 'unit' THEN 'unit'
ELSE 'bulk'
END as prod_qty_type_condensed,
CASE WHEN product_name LIKE '%pepper%' THEN '1'
ELSE '0'
END as pepper_flag
FROM product

--JOIN
/* 1. Write a query that INNER JOINs the vendor table to the vendor_booth_assignments table on the
vendor_id field they both have in common, and sorts the result by vendor_name, then market_date. */



SELECT
vendor_name,
vendor_type,
vendor_owner_first_name,
vendor_owner_last_name,
booth_number,
market_date
FROM vendor as v
INNER JOIN vendor_booth_assignments as vba
ON v.vendor_id = vba.vendor_id
ORDER BY vendor_name, market_date

/* SECTION 3 */

-- AGGREGATE
/* 1. Write a query that determines how many times each vendor has rented a booth
at the farmer’s market by counting the vendor booth assignments per vendor_id. */


SELECT vendor_id,
COUNT(booth_number) as num_rented
FROM vendor_booth_assignments
GROUP BY vendor_id

/* 2. The Farmer’s Market Customer Appreciation Committee wants to give a bumper
sticker to everyone who has ever spent more than $2000 at the market. Write a query that generates a list
of customers for them to give stickers to, sorted by last name, then first name.

HINT: This query requires you to join two tables, use an aggregate function, and use the HAVING keyword. */


SELECT
customer_first_name, --from customer
customer_last_name, -- from customer
SUM(quantity*cost_to_customer_per_qty) as total_spend -- from customer_purchases
FROM customer as c
INNER JOIN customer_purchases as cp
ON c.customer_id = cp.customer_id
GROUP BY customer_last_name, customer_first_name
HAVING total_spend >2000


/*checking to see that all purchases are included for each person
SELECT customer_id,
SUM(quantity*cost_to_customer_per_qty) as total
FROM customer_purchases
WHERE customer_id = 4
*/

--Temp Table
/* 1. Insert the original vendor table into a temp.new_vendor and then add a 10th vendor:
Expand All @@ -77,10 +118,16 @@ When inserting the new vendor, you need to appropriately align the columns to be
-> To insert the new row use VALUES, specifying the value you want for each column:
VALUES(col1,col2,col3,col4,col5)
*/
CREATE TABLE temp.new_vendor AS

SELECT*
FROM vendor

INSERT INTO temp.new_vendor VALUES
(10,'Thomass Superfood Store','Fresh Focused','Thomas','Rosenthal')


-- Date
-- Date: DO NOT DO
/*1. Get the customer_id, month, and year (in separate columns) of every purchase in the customer_purchases table.

HINT: you might need to search for strfrtime modifers sqlite on the web to know what the modifers for month
Expand Down
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