The statement that Apache web server is the most widely used network operating system used on web servers is true. This server runs on <span>67% of all webservers in the world</span>
The Apache web server is a free and open-source cross-platform HTTP Server,<span> developed and maintained by </span>Apache Software Foundation.
The publisher tab in the application control allows you to manage the various certificates that are used to sign to binaries. Publisher allow executables of a particular vendor, signed by a security certificate issued
to the vendor by a Certificate Authority. Also, all applications and binary files either added
to or modified on an endpoint that are signed by the certificate are automatically added to
the whitelist.
For the view of Exercise 4.18, explain why the database system would not allow a tuple to be inserted into the database through this view.
For reference
For the database of Figure 4.12, write a query to find the ID of each employee with no manager. Note that an employee may simply have no manager listed or may have a null manager. Write your query using an outer join and then write it again using no outer join at all.
OUTER JOIN
select e.ID from employee e left outer join manages m on e.ID = m.ID
where m.manager_id is null;
NO OUTER
select e.ID from employee e where e.ID not in (select m.ID from manages m) or e.ID in (select m.ID from manages m where m.manager_id is null);
Answer:
What programming language is this
Explanation:
