A Guide to SQL
9th Edition
ISBN: 9781111527273
Author: Philip J. Pratt
Publisher: Course Technology Ptr
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Question
Chapter 7, Problem 7CAT
Program Plan Intro
Index deletion:
The “DROP INDEX” command is used to delete the index from the data base.
Syntax for deleting index is as follows:
DROP INDEX INDEX_NAME;
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Database
Q1:
Which one of the following INSERT statements will successfully insert a single row?
The following table has been created:
CREATE TABLE student_table (
stud_id NUMBER (6),
last_name VARCHAR2 (20),
first_name VARCHAR2 (20),
lunch_num NUMBER (4) ;
a) INSERT VALUES INTO student_table (143354, ‘Roberts’, ‘Cameron’, 6543);
b) INSERT INTO student_table COLMUNS (stud_id, last_name, lunch_num) VALUES (143352,
‘Roberts’, 5543, ‘Cameron’);
c) INSERT TO student_table (stud_id, lunch_num, first_name, last_name) VALUES (143352, 6543,
‘Cameron’, ‘Roberts’);
d) INSERT INTO student_table VALUES (143354, ‘Roberts’, ‘Cameron’, 6543);
Q2:
What does the following SQL statement display:
SELECT EMP_ID, LAST_NAME, SALARY
FROM EMPLOYEES WHERE
SALARY > (SELECT MIN (E. SALARY)
FROM EMPLOYEES E)
ORDER BY SALARY DESC;
a) Employees information who earn less money than the maximum salary
b) Employees information who earn more money than the highest employee salary
c) Employees information who earn…
Chapter 7 Solutions
A Guide to SQL
Ch. 7 - What is a view?Ch. 7 - Which command creates a view?Ch. 7 - Prob. 3RQCh. 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. 8RQCh. 7 - Which command terminates previously granted...Ch. 7 - Prob. 10RQCh. 7 - How do you create an index? How do you create a...
Ch. 7 - Prob. 12RQCh. 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. 16RQCh. 7 - Prob. 17RQCh. 7 - Prob. 18RQCh. 7 - Prob. 19RQCh. 7 - When would you usually specify primary key...Ch. 7 - Prob. 21RQCh. 7 - Prob. 22RQCh. 7 - Prob. 23RQCh. 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. 5TDCh. 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. 9TDCh. 7 - Prob. 10TDCh. 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. 5CATCh. 7 - Create the following indexes: a. Create an index...Ch. 7 - Prob. 7CATCh. 7 - Write the commands to obtain the following...Ch. 7 - Prob. 9CATCh. 7 - Ensure that the only legal values for the TYPE...Ch. 7 - Prob. 11CATCh. 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. 5SCGCh. 7 - Prob. 6SCGCh. 7 - Delete the OWNER_INDEX 3 index from the OWNER...Ch. 7 - Write the commands to obtain the following...Ch. 7 - Prob. 9SCGCh. 7 - Ensure that the only legal values for the BDRMS...Ch. 7 - Prob. 11SCG
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A Guide to SQLComputer ScienceISBN:9781111527273Author:Philip J. PrattPublisher:Course Technology Ptr
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