Oracle 12c: SQL
3rd Edition
ISBN: 9781305251038
Author: Joan Casteel
Publisher: Cengage Learning
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Textbook Question
Chapter 5, Problem 20MC
What is the maximum number of records that can be modified with a single UPDATE command?
- a. 1
- b. 2
- c. 3
- d. unlimited
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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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- If you're not sure where the update.txt file is on your computer, it's advised that you print one copy.arrow_forward(a) Which command makes updates permanent?(b) Which command reverses updates? (c) Which updates are reversed?arrow_forwardExecute a command that undoes the previous deletion.arrow_forward
- 46. The log is a sequence of _________ recording all the update activities in the database. a. Log records b. Records c. Entries d. Redoarrow_forwardThe 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.arrow_forwardWhich statement is not correct? The goal of batch controls is to endure that during processing a. Transactions are not omitted b. Transactions are processed more than once c. Transactions are not added d. An audit trial is createdarrow_forward
- If you're not sure where the update.txt file is on your machine, you can print a copy.arrow_forwardRace between processes is a condition resulting when locking is not used which causes incorrect final version of data. Select one: O True O Falsearrow_forward5. Fill in the permissions in Table 4-7 with checkmarks, assuming that all four files are in the directory /public, which has a mode of rwxr-xr-x. Table 4-7 Permissions table for Discovery Exercise 5 Filename Mode Read Edit Execute List Delete sample1 User rw-rw-rw- Group Other sample2 r- User Group Other sample3 User rwxr-x--- Group Other sample4 User r-: Group Otherarrow_forward
- It is recommended that you print one copy if you are unsure of the location of the update.txt file on your computer.arrow_forwardUPDATEs and DELETEs can be destructive in nature. What statement might you use to see the rows that will be impacted before executing a DELETE or UPDATE?arrow_forwardcreate a new database (named MyUniversity), the creation (using the CREATE command) shouldbe done once. The database is now created and saved locally on your computer. When you close the workbench and reopen it again, no need to re-run this CREATE command again (the compiler will give you an error, as the database you would like to create was already created) Task Description: consider the following relations for a university: Student (sid: integer, sname: string(100 chars), GPA: real, dateOfBirth: date, Did: integer, FirstYear: integer) Department (did: integer, dname: string(30 chars), capacity: integer) Course (cid: integer, cname: string(50 chars), credit: integer) Enroll (studentID: integer, courseID: integer, departmentID: integer, enrollmentDate: date, finalGrade: real) studentID, courseID, and departmentID in Enroll are foreign keys referencing the primary keys of the student, course, and department relations, respectively. Did in Student is a foreign key referencing the…arrow_forward
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