Answer:
1. Where,
2. From
Explanation:
In SQL query language when working on a database, a user can use certain clauses to carry out some functions.
Hence, The WHERE clause allows us to select only those rows in the result relation of the FROM clause that satisfy a specified predicate.
This is because the "Where clause" selects the rows on a particular condition. While the "From clause" gives the relation which involves the operation.
Change the selection to include everything on the picture except what was originally selected.
This is because inversion is basically flipping everything you did inside out.
Hope this helps!
D) To determine which posts from a particular user have received the greatest number of comments
<u>Explanation:</u>
Since social media excepting comments from end user website or social media should keep track of end user information such as name with email address and phone extra.
If we do so we can end user information in cans, end user post, wrong post information can be blocked or given end user information for further analysis. Moreover web site can receive positive or negative posts.
For me all four will be my answer. If we don’t track any information about end user it is against to law.
Answer:
d. Click on "add a proctor" link, next to the course
Explanation:
After a student is done registering for a course with a proctored exam, the next step is for the student to click on the “add a proctor” link. This link can be found next to the course that the student has just registered. The aim of this link is to ensure that all the proctor details are inserted by the student. After this is accomplished, the proctor receives an e-mail from Student Services to confirm if they are willing to act as a proctor for the student.