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Write the SQL code to change the job code to 501 for the person whose employee number (EMP_NUM) is 107. After you have completed the task, examine the results and then reset the job code to its original value.

Write the SQL code to change the job code to 501 for the person whose employee number (EMP_NUM) is 107. After you have completed the task, examine the results and then reset the job code to its original value.

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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Write the SQL code to change the job code to 501 for the person whose employee number (EMP_NUM) is 107. After you have completed the task, examine the results and then reset the job code to its original value.

 

Expert Solution
Step 1

Since here database is not given. So, we are assuming an emp table with the single column i.e., EMP_NUM.

Consider the below-given emp, table:

Computer Engineering homework question answer, step 1, image 1

Step 2

After that save this state of table by using savepoint as shown below:

savepoint a;

 

Snapshot of query:

 

Computer Engineering homework question answer, step 2, image 1

Step 3

SQL code to change the job code to 501:

 

update emp set emp_num=501 where emp_num=107;

 

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