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Leslie’s Korean Catering DatabaseIEOR 115: Team 1
Anthony Blair, Camille Stuczynski, Jerry Cortez, Liam Campbell, Moses (Yu-chieh) Lee, Rebecca Martin, Stella Bao, Susheel Krishnamurthy, Waverly Runion, Wesley Jin
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PresentationMenu
Client SummaryBackground about project client
Project BenefitsBenefits of database system
EER DiagramEntities & Relationships
Relational SchemaAccess Implementation of database
QueriesApplication of database contents
NormalizationOptimization
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Client Summary
Leslie’s Korean Catering is a meal catering
& delivery service based in Buena Park, CA.
Business is operated by Leslie Jin, who does
all the marketing, cooking, deliveries, &
accounting.
New menu each week that consists of
entree, various side dishes, and soups.
Orders placed through social media.
Outline Client Benefits EER Schema Queries Normalization
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Project BenefitsImprove
WorkflowBest PracticesData Collection
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Outline Client Benefits EER Schema Queries Normalization
EER Diagram
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Relational Tables
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Outline Client Benefits EER Schema Queries Normalization
1. Menu_Item (ItemName, Price, RecipeName2)
a. Retired Menu Item (ItemName1, DateRetired)
b. Seasonal Menu Item(ItemName1, Season)
2. Recipe (RecipeName, type_of_dish, cook_style, directions)
3. Ingredient (IngredientName, SupplierName, ing_category)
4. Food_Inventory_Item (FoodInventoryID, IngredientName3, Quantity, Cost, SupplierName, PurchaseDate)
5. Package_Inventory_Item (PackagingName, Cost, quantity, SupplierName, PurchaseDate)
6. Supplier(SupplierName, Address, PhoneNumber)
7. Sale (SaleName, SaleNotes)
8. Week_Menu_Item(WeekMenuItemID, WeekStartDate, ItemName1)
9. Cooking_Class(CourseID, ClassName, StartDate, EndDate, Price, Capacity)
10. Stop(Address, LocationNotes)
11. Social Platform(SocialPlatformName, UserName, NumFollowers)
12. Order(OrderID, OrderDate, DeliveryPersonID13a, CustomerID15, DeliveryAddress, Delivery Zip, Total,
PaidStatus, SpecialRequests)
a. Pre-Order(OrderID12, PreOrderDate)
b. Recurring(OrderID12, Day, Recurrence)
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Outline Client Benefits EER Schema Queries Normalization
13. Employee(EmployeeID, EmployeeName, Birthdate, PhoneNumber, Address, VacationDays, Salary)
a. Delivery Person(DeliveryPersonID, EmployeeID13, VehicleName, VehicleType, LicensePlate,
hourly_wage)
b. Chef(ChefID, EmployeeID1l3, salary, CulinarySchool, Experience, ChefPosition)
c. Office Staff(OfficeStaffID, EmployeeID13, JobTitle, salary)
14. Feedback(FeedbackID, date, CustomerID15)
d. Review(FeedbackID14, text, stars, OrderID12, SocialPlatform)
e. Survey(FeedbackID14, answers)
15. Customer(CustomerID,CustomerName, PhoneNumber, Address)
f. Person (CustomerID15, birthdate)
i. College Student (PersonID15a, College)
ii. Business Person (CustomerID15a, GroupCustomerID15bii, Place_of_business)
iii. Senior/Elder (CustomerID15a, DietaryRestrictions)
g. Group (CustomerID15, GroupName, GroupSize)
i. Church (CustomerID15b, Church_address)
ii. Business (CustomerID15b, Business_address)
iii. Wedding (CustomerID15b, wedding_date, wedding_address)
iv. Friend_group (CustomerID15b, referred_by)
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Outline Client Benefits EER Schema Queries Normalization
16. Recipe_ingredient(RecipeName2, IngredientName3, Quantity)
17. Menu_item_uses_Food_inventory(ItemName1, FoodInventoryID, IngredientName, quantity)
18. Order_uses_packaging_inventory_item(OrderID12,, PackagingName5, QuantityUsed)
19. Week_menu_item_has_sale(WeekMenuItemID8,SaleName7, sale_percentage)
20. Order_Contents(OrderID12,WeekItemID8, Quantity)
21. Customer_signs_up_for_Cooking_Class(CustomerID15,CourseID9, SignUpDate)
22. Cooking_Class_advertised_on_Social_Platform(CourseID9, SocialPlatformName11, number_views, date_post)
23. Cooking_Class_taught_by_Chef(CourseID9, ChefID13b)
24. Makes_videos_on_Social_Platform(ChefID13b, SocialPlatformName11, NumViews
25. Person_is_related_to_Person(CustomerID15a, CustomerID215a, relationship)
26. Customer_uses_Social_Platform(CustomerID15, SocialPlatformName11, username, followerCount)
27. Delivery_Stop(DeliveryPersonID13a, Address10, Date_delivery, time)
28. Office_staff_reviews_feedback(OfficeStaffID13c, FeedbackID14a)
29. Chef_creates_recipe(ChefID13b, RecipeName2)
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Relational SchemaAs implemented in Access
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Relational Schema
Outline Client Benefits EER Schema Queries Normalization
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Relational Schema
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Query 1: Dish-Review CorrelationWhat Dishes Have the Highest Correlation to Good Reviews?
Benefit: The Restaurant is able to see which of their dishes are most enjoyed by their customers
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Query 1 Methodology: Extract Data
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Query 1 Methodology: R Extension
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Query 1 Methodology: R Output
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Query 1 Findings:
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Best 3 Dishes:● Pickled Radish & Pepper● Eggplant Salad● Marinated Pepper
Worst 3 Dishes:● Vegetable Stew● Garlic Black Beans● Broccoli with Bean
Some of Leslie’s Most Popular Dishes (actual):
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Query 2: Translating Recipe Features to ProfitWhat type of dishes generate profit? What sells, and what can we learn from for future dishes or revisions?
Benefit: The restaurant can increase profit on their dishes by knowing how to edit the recipe
Dish attributes: 1) Type of dish 2) Preparation methodology3) Day of the month dish is ordered4) Complexity of cooking directions
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Query 2 Methodology: Extract Data
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Query 2 Methodology:
Check out the API at: Click here for PCA and here for K-means
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normalization+PCA+K-means clustering
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Query 2: PCA+K-Means CodeCode snippet from Python demonstrating how PCA + K-means were conducted
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Outline Client Benefits EER Schema Queries Normalization
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Query 2: Findings● The blue and purple regions correspond to menu items that yield the
most profit.● We should cater our recipe to 2 specific types of people: people with
heavy taste and light taste. ● We should have more entrees. There aren’t that many served on our
current weekly menu.
Outline Client Benefits EER Schema Queries Normalization
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Query 3: Economic Order Quantities for InventoryWhen should we purchase more ingredients? How many ingredients should be purchased during each shopping trip?
Benefit: The restaurant will be able to make better informed decisions about when to purchase supplies and how many units to purchase.
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Query 3: EOQ
EOQ involves determining the optimal
order quantity Q, and the optimal
reorder point T ( the time between
orders) for inventory
● h = holding cost = decline in
freshness [cost/unit day]
● k = reorder cost = price of
ingredient [cost/order]
● D = deterministic demand
[items/day]
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Query 3: SQL Data Pull for EOQ
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Query 3: SQL Data Pull for EOQ
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Query 3: EOQ Matlab Code
Code snippet from Matlab
demonstrating how the Q and T values
are calculated
DSP = Days since Purchase
NDemand is Daily Demand for each
ingredient
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Query 3: EOQ Results from Matlab
For Bean Sprouts purchased 8 days ago,
we should order about 2 Bean Sprouts in
16 days
Q = 1.5803
T = 15.8035
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Query 3: EOQ Results from Matlab
For Beef purchased 2 days ago, we
should order about 6 pieces of Beef in 5
days
Q = 5.4889
T = 4.8433
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Query 3: EOQ Results from Matlab
For Soy Sauce purchased 11 days ago,
we should order about 4 more Soy
Sauce packets in 4 days
Q = 3.7734
T = 4.1926
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Query 4: Location PlanningWhat is the best location to place the next facility based on historical demand?
Benefit: Strategically place new location(s) that will reduce transportation cost/time.
marketingland.com
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Query 4: Location Planning
Approach: P-Median Location Model
Idea: Minimize the demand-weighted
average distances between demand
nodes & location where facility will be
placed → approximation to delivery cost
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i j hi di,j
= demand nodes= possible facility locations= demand at node i= distance between i & j
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Query 4: Data for Location Planning
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Demand Nodes:
Possible Facility Locations:
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Query 4: Facility Location
Two ways: (1) Use revenue as demand
(2) Use number of orders as demand
Output (using heuristic):
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Query 5: Social Media CampaignsHow many days before a cooking class should you post an advertisement in order to maximize enrollment?
Benefit: The restaurant will be able to use social media to maximize enrollment in cooking classes.
ASHLEY ROWLAND/S&S
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Query 5: Social Media Campaigns
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Query 5: Social Media Campaigns
Exclusivity Score: Output of an equation based off of the Capacity and Price of a class
Idea: Calculate the relationship between exclusivity score and number of days prior to a class than an
advertisement is posted
Graph this information to determine the most relevant relationships and how to utilize those relationships for
future marketing campaigns
Sample Output:
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Query 5: Social Media CampaignsApproach: Quadratic and Linear
Regression
Methodology: We used a
quadratic fit line and linear
regression in MATLAB
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Query 5: Social Media Campaigns
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Query 5: Social Media Campaigns
Predicting Success of future classes:
Results: ● Approximate linear relationship between likes and number of
enrollments
● Quadratic relationship between exclusivity and number of likes
● Optimal time frame to post advertisements is around 45 days
Conclusion: Advertise classes 45 days prior to class start date, and design classes with an
exclusivity score of around 30 to maximize likes and enrollments.
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Normalization
Decomposing our relations to optimize query time
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NormalizationProposals—1NF to 2NF
Rel. 20. Order_Contents(OrderID12,WeekItemID8, Quantity)
OrderID → QuantityWeekItemID -/-> Quantity; partial dependency exists
2NF conversion:Order_Contents(OrderID12,WeekItemID8)Order_Quantity(OrderID12, Quantity)
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NormalizationProposals—2NF to 3NF
Rel. 12. Order(OrderID, OrderDate, DeliveryPersonID13a, CustomerID15, DeliveryAddress, Total, PaidStatus)
OrderID → CustomerIDCustomerID → DeliveryAddress; transitive dependency exists
3NF conversion:Order(OrderID, OrderDate, DeliveryPersonID13a, CustomerID15, Total, PaidStatus)OrderAddress(CustomerID15, DeliveryAddress)
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Thank YouAny Questions?
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