Question
In a simple database, there are six (6) tables. The database keeps track of restaurants, their owners, customers and their favorite foods. In particular, an
In a simple database, there are six (6) tables. The database keeps track of restaurants, their owners, customers and their favorite foods. In particular, an owner can own several restaurants. In each restaurant different types of foods are served. Different customers of the restaurant like different types of foods. The database schema is as follows:
Provide a relational algebra for the following queries:
a) List the SSN and name of customers who like their favorite food.
b) List the name and phone number of all owners who do not serve Bread Pudding in their restaurants.
c) Customers should like their favorite food. List the SSN and name of all customers who DO NOT like their favorite food.
DATABASE: RESTAURANT (Restaurant_name[pk], City, Phone, Owner_SSN [fk]) FOOD (Food_name[pk], Type, Country) CUST (SSN(pk], Name, Birth_year, Fav_food[fk], Gender) LIKES (SSN [fk], Food[fk]). SERVES (Restaurant[fk], Food[fk]) OWNER (SSN [pk], Name, City, Address, Phone)Step by Step Solution
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