Answer:
mobile calculator
Explanation:
The mobile calculator application is a mobile software on phones and other computer devices that returns the answer to a calculation given the operands and opcode specified by the user.
Standard Tree Protocol (STP) is a networking protocol that was made by Radia Perlman. It makes a single path over a network, averting any loops from happening. Even if there are multiple paths to the same destinations. It has two never versions which is 802.1s and 802.1w.
The statement people often delete or read email based upon the subject line alone select one is TRUE. Based on the subject or topic of the email, they will judge if it is worthy to be read or deleted.
One of the founders of Foursquare is Dennis Crowley. The other is Naveen Selvadurai. I know you didn't ask for both but I wanted to give them to you just in case. I hope this helps! (:
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);
