1. Find the names of all red parts. 2. Find all prices for parts that are red or green. (A part may have different prices from different manufacturers. 3. Find the sIDs of all suppliers who supply a part that is red or green. 4. Find the names of all suppliers who supply a part that is red or green.
1. Find the names of all red parts. 2. Find all prices for parts that are red or green. (A part may have different prices from different manufacturers. 3. Find the sIDs of all suppliers who supply a part that is red or green. 4. Find the names of all suppliers who supply a part that is red or green.
Database Systems: Design, Implementation, & Management
11th Edition
ISBN:9781285196145
Author:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Publisher:Steven, Steven Morris, Carlos Coronel, Carlos, Coronel, Carlos; Morris, Carlos Coronel and Steven Morris, Carlos Coronel; Steven Morris, Steven Morris; Carlos Coronel
Chapter11: Database Performance Tuning And Query Optimization
Section: Chapter Questions
Problem 13RQ
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Solve with hand
Transcribed Image Text:Schema
Suppliers (sID, sName, address)
Parts (pID, pName, colour)
Catalog (sID, pID, price)
Solve all queries below twice. First using SQL, then using Relational
Algebra:
1. Find the names of all red parts.
2. Find all prices for parts that are red or green. (A part may have
different prices from different manufacturers.
3. Find the sIDs of all suppliers who supply a part that is red or green.
4. Find the names of all suppliers who supply a part that is red or
green.
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Schema
Suppliers (sID, sName, address)
Parts (pID, pName, colour)
Catalog (sID, pID, price)
Solve all queries using Relational Algebra:
1. Find the names of all red parts.
2. Find all prices for parts that are red or green. (A part may have different prices from different manufacturers.
3. Find the sIDs of all suppliers who supply a part that is red or green.
4. Find the names of all suppliers who supply a part that is red or green.
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