Consider the following relations Company and Product. Give the result for the following relational algebra operations:

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
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Consider the following relations Company and Product. Give the result for the following relational algebra operations:

  1. ÕPName, Price (scountry=“USA”(Company Product))
  2. ÕPName, StockPrice (Product Company)

Company

CName

StockPrice

Country

Works

25

USA

Canon

65

Japan

Hitachi

15

Japan

Product

PName

Price

Category

CName

Gizmo

$19.99

Gadgets

Works

Power

$29.99

Gadgets

Works

SingleTouch

$149.99

Photography

Canon

MultiTouch

$203.99

Household

Samsong

 

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