Hello <span>Abigailguzman6347</span><span>
</span>Answer: If you use a surrogate key, you must ensure that the candidate key of the entity in question performs properly through the use of "unique index" and "not null" constraints.
Hope This Helps!
-Chris
A browser is an example of a system application
Explanation:
An application interface or user interface ,is the set of features an application provides so that user may supply input to and recieve output from,the program.
A kernel manages the whole computer including hardware. In Unix, all processes are launched from systemd/launchd.
