Given the following database schema: Customer(cid. , cname , rating, salary) Item(iid, iname , type ) Ooder(cid , iid , day , gty ) what is the relational algebra that retrieve the names of customers who have ordered item with id 100

Given the following database schema: Customer(cid. , cname , rating, salary) Item(iid, iname , type ) Ooder(cid , iid , day , gty ) what is the relational algebra that retrieve the names of customers who have ordered item with id 100

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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Question

Quiz 1
العودة
< >
00: all cö
Given the following database schema:
Customer(cid., cname , rating, salary)
Item(iid, iname , type )
Ooder(cid, iid , day , gty )
what is the relational algebra that retrieve the
names of customers who have ordered item with id
100
.a
.All choices are correct
.b
1ramelo iid=100
'iid=100
(OrderCustomer))
.C
iid=100
1-100Order)aCustomer)
.d
(Order)
templ<-o
temp2<-templdCustomer
Ocname(temp2)
iid=100

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