9th Edition

ISBN: 9781111527273

Author: Philip J. Pratt

Publisher: Course Technology Ptr

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SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.

Queries

A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prio…

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Textbook Question

Chapter 7, Problem 2SCG

Create a view named CONDO_OWNERS. It consists of the location number, unit number, square footage, bedrooms, baths, condo fee, and owner’s last name for every condo in which the number of bedrooms is three.

a. Write and execute the CREATE VIEW command to create the CONDO_OWNERS view.
b. Write and execute the command to retrieve the location number, unit number, condo fee, square footage, and owner’s last name for every condo in the CONDO_OWNERS view with a condo fee of less than $500.
c. Write and execute the query that the DBMS actually executes.
d. Does updating the database through this view create any problems? If so, what are they? If not, why not?

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Chapter 7 Solutions

A Guide to SQL

Ch. 7 - What is a view?Ch. 7 - Which command creates a view?Ch. 7 - Prob. 3RQ Ch. 7 - What happens when a user retrieves data from a...Ch. 7 - What are three advantages of using views?Ch. 7 - Which command deletes a view?Ch. 7 - Prob. 8RQ Ch. 7 - Which command terminates previously granted...Ch. 7 - Prob. 10RQ Ch. 7 - How do you create an index? How do you create a...

Ch. 7 - Prob. 12RQ Ch. 7 - Does the DBMS or the user make the choice of which...Ch. 7 - Describe the information the DBMS maintains in the...Ch. 7 - The CUSTOMER table contains a foreign key,...Ch. 7 - Prob. 16RQ Ch. 7 - Prob. 17RQ Ch. 7 - Prob. 18RQ Ch. 7 - Prob. 19RQ Ch. 7 - When would you usually specify primary key...Ch. 7 - Prob. 21RQ Ch. 7 - Prob. 22RQ Ch. 7 - Prob. 23RQ Ch. 7 - Use SQL to make the following changes to the TAL...Ch. 7 - Create a view named ITEM_ORDER. It consists of the...Ch. 7 - Create a view named ORDER_TOTAL. It consists of...Ch. 7 - Write, but do not execute, the commands to grant...Ch. 7 - Prob. 5TD Ch. 7 - Perform the following tasks: a. Create an index...Ch. 7 - Delete the index named ITEM_INDEX3.Ch. 7 - Write the commands to obtain the following...Ch. 7 - Prob. 9TD Ch. 7 - Prob. 10TD Ch. 7 - Toys Galore currently has a credit limit of 7,500....Ch. 7 - Use SQL to make the following changes to the...Ch. 7 - Create a view named RESERVATION_CUSTOMER. It...Ch. 7 - Create a view named TRIP_INVENTORY. It consists of...Ch. 7 - Write, but do not execute, the commands to grant...Ch. 7 - Prob. 5CAT Ch. 7 - Create the following indexes: a. Create an index...Ch. 7 - Prob. 7CAT Ch. 7 - Write the commands to obtain the following...Ch. 7 - Prob. 9CAT Ch. 7 - Ensure that the only legal values for the TYPE...Ch. 7 - Prob. 11CAT Ch. 7 - Use SQL to make the following changes to the...Ch. 7 - Create a view named CONDO_OWNERS. It consists of...Ch. 7 - Create a view named CONDO_FEES. It consists of two...Ch. 7 - Write, but do not execute, the commands to grant...Ch. 7 - Prob. 5SCG Ch. 7 - Prob. 6SCG Ch. 7 - Delete the OWNER_INDEX 3 index from the OWNER...Ch. 7 - Write the commands to obtain the following...Ch. 7 - Prob. 9SCG Ch. 7 - Ensure that the only legal values for the BDRMS...Ch. 7 - Prob. 11SCG

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Solution Summary: The author explains that the “VIEW” in the SQL (Structured Query Language) is a virtual table that does not exist physically.

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