1. Consider the following tables and their structures, which are part of a common database: CUSTOMER (Customer ID, CompanyName) SOFTWARE (SoftwareID, SoftwareName, Operating System, Description) LICENCE (LicenceID, Customer ID, SoftwareID, DateOfPurchase, LicenceType, Cost, Expiry Date) (a) Identify the keys (primary keys, alternate keys, foreign keys) from each of the tables. (b) Write a query to display all software for the operating system "Linux" from the table Software. (c) Write a to list all the licences where cost is more than 35000 Groun the output bu query

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1. Consider the following tables and their structures, which are part of a common database:
CUSTOMER (CustomerID, Company Name)
SOFTWARE (SoftwareID, SoftwareName, Operating System, Description)
LICENCE (LicenceID, Customer ID, SoftwareID, DateOfPurchase, LicenceType,
Cost, Expiry Date)
(a) Identify the keys (primary keys, alternate keys, foreign keys) from each of the tables.
(b) Write a query to display all software for the operating system "Linux" from the table Software.
(c) Write a query to list all the licences where cost is more than 35000. Group the output by
CustomerID, and in ascending order of cost.
Transcribed Image Text:1. Consider the following tables and their structures, which are part of a common database: CUSTOMER (CustomerID, Company Name) SOFTWARE (SoftwareID, SoftwareName, Operating System, Description) LICENCE (LicenceID, Customer ID, SoftwareID, DateOfPurchase, LicenceType, Cost, Expiry Date) (a) Identify the keys (primary keys, alternate keys, foreign keys) from each of the tables. (b) Write a query to display all software for the operating system "Linux" from the table Software. (c) Write a query to list all the licences where cost is more than 35000. Group the output by CustomerID, and in ascending order of cost.
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