E Product ProductID: int Name: string Barcode string ManufacturerID : int E Consumer Email: string sold in sells (E) FoodProduct // Inherits ProductID, Name, Barcode, ManufacturerID from Product Expiry Date date E NonFoodProduct // Inherits ProductID, Name, Barcode, ManufacturerID from Product WarrantyPeriod: string E Manufacturer ManufacturerID : int Name: string Address string PhoneNumber: string Email: string E Store StoreID: int Name: string Address string PhoneNumber: string Email: string StoreLocation: string E Ingredient IngredientID : int Item: string Source: string E NutritionalDetail NutritionalDetailID : int Item: string Amount: string

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Write the SQL code to create the relational schemas from this data base system : 

Entities and Attributes

1. Product

  • Attributes:
    • ProductID (PK): Unique identifier for each product.
    • Name: Name of the product.
    • Barcode: Barcode for the product.
    • ManufacturerID (FK): Foreign key referencing the Manufacturer.
    • Category: Dietary category of the product (e.g., vegan, vegetarian).
  • Assumption: Each product has a unique identifier and is associated with a manufacturer and dietary category.

2. Manufacturer

  • Attributes:
    • ManufacturerID (PK): Unique identifier for each manufacturer.
    • Name: Name of the manufacturer.
    • Address: Address of the manufacturer.
    • PhoneNumber: Contact number.
    • Email: Contact email.
  • Assumption: Manufacturers produce multiple products.

3. Store

  • Attributes:
    • StoreID (PK): Unique identifier for each store.
    • Name: Name of the store.
    • Address: Address of the store.
    • PhoneNumber: Contact number.
    • Email: Contact email.
    • StoreLocation: Location of the store.
  • Assumption: Stores sell multiple products.

4. Ingredient

  • Attributes:
    • IngredientID (PK): Unique identifier for each ingredient.
    • Item: Name of the ingredient.
    • Source: Source of the ingredient.
  • Assumption: Each product consists of multiple ingredients.

5. NutritionalDetail

  • Attributes:
    • NutritionalDetailID (PK): Unique identifier for each nutritional detail.
    • Item: Nutritional item (e.g., calories, protein).
    • Amount: Amount of the nutritional item.
  • Assumption: Each product has multiple nutritional details.

6. Consumer

  • Attributes:
    • Email (PK): Email of the consumer.
  • Assumption: Consumers can suggest products, and only their email is stored.

Relationships

1. Product-Manufacturer: A product is manufactured by one manufacturer, and a manufacturer can produce many products.

  • Type: One-to-Many
  • Explanation: The ManufacturerID in the Product entity references the Manufacturer entity.

2. Product-Store: A product can be sold in many stores, and a store can sell many products.

  • Type: Many-to-Many
  • Explanation: This relationship is represented using an associative entity (e.g., ProductStore), which connects ProductID and StoreID.

3. Product-Ingredient: A product can have many ingredients, and an ingredient can be part of many products.

  • Type: Many-to-Many
  • Explanation: This relationship is represented using an associative entity (e.g., ProductIngredient), which connects ProductID and IngredientID.

4. Product-NutritionalDetail: A product can have many nutritional details, and each nutritional detail is associated with one product.

  • Type: One-to-Many
  • Explanation: The NutritionalDetailID in the Product entity references the NutritionalDetail entity.

5. Consumer-Product: Consumers can request to add products.

  • Type: Optional One-to-Many
  • Explanation: No direct relationship is stored in the database, but consumers can suggest products, and only their email is recorded if they request it.

Subtype/Supertype Hierarchy (EER Specific)

  • Supertype Product: General entity for all products.
  • Subtypes FoodProduct and NonFoodProduct: Specific types of products inheriting from Product.
    • FoodProduct Attributes:
      • ExpiryDate: Expiry date of the food product.
    • NonFoodProduct Attributes:
      • WarrantyPeriod: Warranty period of the non-food product.
E Product
ProductID: int
Name: string
Barcode string
ManufacturerID : int
E Consumer
Email: string
sold in
sells
(E) FoodProduct
// Inherits ProductID, Name, Barcode, ManufacturerID from Product
Expiry Date date
E NonFoodProduct
// Inherits ProductID, Name, Barcode, ManufacturerID from Product
WarrantyPeriod: string
E Manufacturer
ManufacturerID : int
Name: string
Address string
PhoneNumber: string
Email: string
E Store
StoreID: int
Name: string
Address string
PhoneNumber: string
Email: string
StoreLocation: string
E Ingredient
IngredientID : int
Item: string
Source: string
E NutritionalDetail
NutritionalDetailID : int
Item: string
Amount: string
Transcribed Image Text:E Product ProductID: int Name: string Barcode string ManufacturerID : int E Consumer Email: string sold in sells (E) FoodProduct // Inherits ProductID, Name, Barcode, ManufacturerID from Product Expiry Date date E NonFoodProduct // Inherits ProductID, Name, Barcode, ManufacturerID from Product WarrantyPeriod: string E Manufacturer ManufacturerID : int Name: string Address string PhoneNumber: string Email: string E Store StoreID: int Name: string Address string PhoneNumber: string Email: string StoreLocation: string E Ingredient IngredientID : int Item: string Source: string E NutritionalDetail NutritionalDetailID : int Item: string Amount: string
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