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: Cengage Learning
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Chapter 11, Problem 26P
Problems 25 and 26 are based on the following query:
| SELECT | P_CODE, P_DESCRIPT, P_QOH, P_PRICE, V_CODE |
| FROM | PRODUCT |
| WHERE | V_CODE = '21344' |
| ORDER BY | P_CODE; |
How should you rewrite the query to ensure that it uses the index you created in your solution to Problem 25?
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Task 5:
The Driver Relationship team requested to ensure that there will be no duplicates in the active drivers tables in terms of first name, last name and driving license ID. You need to create a constraint in the ACTIVE_DRIVERS table, called DuplicateCheck, to ensure the first name, last name, and the driving license ID are unique.
ANSWER IN MYSQL PLEASE
Personal Insurance, Inc. is a national company that insures homeowners and renters. It also offers umbrella policies that provide additional coverage. As a regional manager, you need to be able to query the database to help make decisions and to answer questions from other employees. Create a query based on the Customers table in Query Design View with the following options:
Add the CustomerID, FirstName, LastName, and DateOfBirth fields to the design grid in that order.
Sort the records in ascending order by LastName.
Save the query using CustomerLastNameSorted as the name.Open the query in Datasheet View, then close it, saving if necessary.
Open the HomeownersPremium query in Design View and make the following changes to the query:
Delete the CustomerID column from the design grid.
Add criteria to select only those records where the Premium field value is greater than 2,000.
Save the changes to the HomeownersPremiumOpen the query in Datasheet View, then close it, saving if…
Task 2:
The Driver Relationship team wants to ensure that the all driving license IDs in the active drivers table have the length of 7. Alter the ACTIVE_DRIVERS table created in Chapter 8, Activity 1 to check the length of the DRIVER_DRIVING_LICENSE_ID.
Add a CHECK to the ACTIVE_DRIVERS table to enforce a driver license length of 7.
Test Query:
SELECT DISTINCT(constraint_name)
FROM information_schema.check_constraints
WHERE constraint_schema = 'InstantRide'
AND constraint_name = 'ACTIVE_DRIVERS_chk_1'
Expected Results
CONSTRAINT_NAME
ACTIVE_DRIVERS_chk_1
Chapter 11 Solutions
Database Systems: Design, Implementation, & Management
Ch. 11 - Prob. 1RQCh. 11 - What index should you create? Write the required...Ch. 11 - What is the focus of most performance-tuning...Ch. 11 - What are database statistics, and why are they...Ch. 11 - How are database statistics obtained?Ch. 11 - What database statistics measurements are typical...Ch. 11 - How is the processing of SQL DDL statements (such...Ch. 11 - In simple terms, the DBMS processes a query in...Ch. 11 - If indexes are so important, why not index every...Ch. 11 - What is the difference between a rule-based...
Ch. 11 - Prob. 11RQCh. 11 - What are some general guidelines for creating and...Ch. 11 - Prob. 13RQCh. 11 - Prob. 14RQCh. 11 - Prob. 15RQCh. 11 - SELECT SELECT EMP_LNAME, EMP_FNAME, EMP_AREACODE,...Ch. 11 - Problem 1 and 2 are based on the following query:...Ch. 11 - Using Table 11.4 as an example, create two...Ch. 11 - Problems 46 are based on the following query:...Ch. 11 - Problems 46 are based on the following query:...Ch. 11 - Prob. 6PCh. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 732 are based on the ER model shown in...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 1114 are based on the following query:...Ch. 11 - Problems 15 and 16 are based on the following...Ch. 11 - Problems 15 and 16 are based on the following...Ch. 11 - Problems 1721 are based on the following query:...Ch. 11 - Problems 1721 are based on the following query:...Ch. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Problems 1721 are based on the following query:...Ch. 11 - SELECT SELECT P_CODE, P_DESCRIPT, P_PRICE,...Ch. 11 - Problems 2224 are based on the following query:...Ch. 11 - Problems 2224 are based on the following query:...Ch. 11 - Problems 25 and 26 are based on the following...Ch. 11 - Problems 25 and 26 are based on the following...Ch. 11 - Prob. 27PCh. 11 - Problems 27 and 28 are based on the following...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...Ch. 11 - Problems 2932 are based on the following query:...
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- Problems 2932 are based on the following query: SELECT CUS_CODE, MAX(LINE_UNITSLINE_PRICE) FROM CUSTOMER NATURAL JOIN INVOICE NATURAL JOIN LINE WHERE CUS_AREACODE = '615' GROUP BY CUS_CODE; How would you rewrite the query to ensure that the index you created in Problem 31 is used?arrow_forwardProblems 27 and 28 are based on the following query: SELECT P_CODE, P_DESCRIPT, P_QOH, P_PRICE, V_CODE FROM PRODUCT WHERE P_QOH P_MIN AND P_MIN = P_REORDER AND P_REORDER = 50 ORDER BY P_QOH; What indexes would you recommend? Write the commands to create those indexes.arrow_forwardDelete the OWNER_INDEX 3 index from the OWNER table.arrow_forward
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