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Engineering
Computer Engineering
We will use the CUSTOMER table as an example: Customerld CustomerNumber LastName FirstName AreaCode Address Phone 1 1 1000 Smith John 20 California 11111111 2 1001 Jackson Smith 53 London 2222222 3 1002 Johnsen John 40 London 33333333 We will create a TRIGGER that will check if the Phone number is valid when we insert or update data in the CUSTOMER table. The validation check will be very simple, i.e., we will check if the Phone number is less than 8 digits (which is normal length in Norway). If the Phone number is less than 8 digits, the following message "Phone Number is not valid" be written in place of the wrong number in the Phone column. The TRIGGER becomes something like this: 2.

We will use the CUSTOMER table as an example: Customerld CustomerNumber LastName FirstName AreaCode Address Phone 1 1 1000 Smith John 20 California 11111111 2 1001 Jackson Smith 53 London 2222222 3 1002 Johnsen John 40 London 33333333 We will create a TRIGGER that will check if the Phone number is valid when we insert or update data in the CUSTOMER table. The validation check will be very simple, i.e., we will check if the Phone number is less than 8 digits (which is normal length in Norway). If the Phone number is less than 8 digits, the following message "Phone Number is not valid" be written in place of the wrong number in the Phone column. The TRIGGER becomes something like this: 2.

Computer Networking: A Top-Down Approach (7th Edition)
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
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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We will use the CUSTOMER table as an example: Customerld CustomerNumber LastName FirstName AreaCode Address Phone 1 1000 Smith John 20 California 11111111 2 1001 Jackson Smith 53 London 22222222 3 3 1002 Johnsen John 40 London 33333333 We will create a TRIGGER that will check if the Phone number is valid when we insert or update data in the CUSTOMER table. The validation check will be very simple, i.e., we will check if the Phone number is less than 8 digits (which is normal length in Norway). If the Phone number is less than 8 digits, the following message "Phone Number is not valid" be written in place of the wrong number in the Phone column. The TRIGGER becomes something like this:
Transcribed Image Text:We will use the CUSTOMER table as an example: Customerld CustomerNumber LastName FirstName AreaCode Address Phone 1 1000 Smith John 20 California 11111111 2 1001 Jackson Smith 53 London 22222222 3 3 1002 Johnsen John 40 London 33333333 We will create a TRIGGER that will check if the Phone number is valid when we insert or update data in the CUSTOMER table. The validation check will be very simple, i.e., we will check if the Phone number is less than 8 digits (which is normal length in Norway). If the Phone number is less than 8 digits, the following message "Phone Number is not valid" be written in place of the wrong number in the Phone column. The TRIGGER becomes something like this:
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