Q2) Write a relational algebra expression that returns food items that are sold at "Aldi" and their price.Answer: Try to answer all the questions based on what you were learned.• please write the RA's notations/expression clearly and in sequential order to show all the steps of youranswer.Consider the following database schema and example instance:ingredientrecipenamePasta and MeatballsCheese SoupBurgeritemPastaMeatballsTomato SauceOnionsCheeseBreadGround BeefinventorLe cookThe frenchCowboysfoodItemtypeWheat productMeatSauceVegetablesDiaryWheat productMeatkitchenItalianFrenchAmericancalories204051302545recipePasta and MeatballsPasta and MeatballsPasta and MeatballsPasta and MeatballsCheese SoupCheese SoupCheese SoupBurgerBurgerfoodItemPastaMeatballsTomato SauceTomato SauceCheesefoodItem ouncesPasta50MeatballsTomato SauceOnionsOnionsCheeseBreadBreadGround BeefstockshopAldiAldiAldiWalmartTreasury Islandprice5233510151051415201020Notes:■ Underlined attribute form the primary key of a relation.■ The attribute recipe of relation ingredient is a foreign key to relation recipe. Theattribute foodltem of relation ingredient is a foreign key to relation foodItem-The attribute foodItem of relation stock is a foreign key to relation foodItem.

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Q2) Write a relational algebra expression that returns food items that are sold at "Aldi" and their price. Answer:

Oracle 12c: SQL

3rd Edition

ISBN:9781305251038

Author:Joan Casteel

Publisher:Joan Casteel

Chapter8: Restricting Rows And Sorting Data

Section: Chapter Questions

Problem 5RQ

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