Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Chapter 5, Problem 3HOA
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The Developers team also wants you to ensure that emails are converted to lowercase
after an update operation. Currently, new insertions are guaranteed to have lowercase
emails, but there is no such guarantee for legacy emails. Therefore, the team wants to
ensure that emails are being retained in a lowercase irrespective of any changes in the
database. Create a new TRIGGER called email_update for the USERS table that runs
before an UPDATE operation.
Task
Create a TRIGGER to run on the USERS table before any UPDATE operation.
Task 5:
The Developers team also wants you to ensure that emails are converted to lowercase after an update operation. Currently, new insertions are guaranteed to have lowercase emails, but there is no such guarantee for legacy emails. Therefore, the team wants to ensure that emails are being retained in a lowercase irrespective of any changes in the database. Create a new TRIGGER called email_update for the USERS table that runs before an UPDATE operation.
Task 5:
The Developers team also wants you to ensure that emails are converted to lowercase after an update operation. Currently, new insertions are guaranteed to have lowercase emails, but there is no such guarantee for legacy emails. Therefore, the team wants to ensure that emails are being retained in a lowercase irrespective of any changes in the database. Create a new TRIGGER called email_update for the USERS table that runs before an UPDATE operation.
Task: Create a TRIGGER to run on the USERS table before any UPDATE operation.
(SQL Database Test): Create a TRIGGER before any UPDATE operations on the USERS table
Chapter 5 Solutions
Oracle 12c: SQL
Ch. 5 - Which command should you use to copy data from one...Ch. 5 - Which command can you use to change the existing...Ch. 5 - Which of the following is a correct statement? a....Ch. 5 - Which of the following is a valid SQL...Ch. 5 - Which of the following statements deletes all rows...Ch. 5 - What is the maximum number of records that can be...Ch. 5 - Add a new row in the ORDERS table with the...Ch. 5 - Prob. 2HOACh. 5 - Save the changes permanently to the database.
Ch. 5 - Add a new row in the ORDERS table with the...
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- Which function can be used to add spaces to a column until it’s a specific width? (refer to the tables in the JustLee Books database.)a. TRIMLb. PADLc. LWIDTHd. none of the abovearrow_forwardCreate a set of lookup tables.arrow_forwardModify the Job_class column of the EMPLOYEES table so that it allows storing a maximum width of two characters.arrow_forward
- The SERVICE_REQUEST table uses the CHAR data type for the DESCRIPTION and STATUS fields. Is there an alternate data type that could be used to store the values in these fields? Justify your reason for choosing an alternate data type or for leaving the data type as CHAR.arrow_forwardDelete the BOOK_PRICING table permanently so that it isnt moved to the recycle bin. Delete the JL_EMPS table so that it can be restored. Restore the JL_EMPS table and verify that its available again.arrow_forwardAdd a new row in the ORDERS table with the following data: Order# = 1023 and Customer# = 1009. Describe the error raised and what caused the error.arrow_forward
- How many NOT NULL constraints can be created at the table level by using the CREATE TABLE command? 0 1 12 30 255arrow_forwardA new table has been requested to support tracking automated emails sent to customers. Create the table and add data as described below. Tablename: email_log Columns: emailid (numeric), emaildate (datetime), customer# (numeric) Primary key: emailid column, define as an Identity Column Add the following data rows and display resulting rows (if any errors occur, explain why the error is expected) Emaildate = current date, customer# = 1007 Emailid = specify to use the column default value, emaildate = current date, customer# = 1008 Emailid = 25, emaildate = current date, customer# = 1009arrow_forwardWhich object in the data dictionary enables you to verify DEFAULT column settings? DEFAULT_COLUMNS DEF_TAB_COLUMNS USER_TAB_COLUMNS None of the abovearrow_forward
- Change the CONTACT view so that no users can accidentally perform DML operations on the view.arrow_forwardAdd a new row in the ORDERS table with the following data: Order# = 1022, Customer# = 2000, and Order date = August 6, 2009. Describe the error raised and what caused the error.arrow_forwardWhich of the following data dictionary objects should be used to view information about the constraints in a database? USER_TABLES USER_RULES USER_COLUMNS USER_CONSTRAINTS None of the above objects should be used.arrow_forward
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