There are several software programs and internet applications that you use to send electronic mail (e-mail) to other people. However, for programs that are part of the Microsoft Suite, only one provides this ability, which is (C) Outlook.
Microsoft Access is used to manage databases, while Microsoft Excel is used to analyze numerical and text data. WordPerfect is a word processor software created by Corel.
Answer:
The answer is "Confidentiality".
Explanation:
Data Security is also known as protection against unauthorized computer access, files, and pages through digital information protection. The protection of data also prevents data from bribery.
- It applies to both the security of data from unwanted entities being obtained.
- It allows accessing sensitive data, which may be able to do so.
A shift Down,I guess......
<span>The following statements are true:
1. Leased lines require little installation and maintenance expertise.
( A high service quality is offered by point-to point system)
2. Leased lines provide highly flexible bandwidth scaling.
(This Allows a Constant availability)</span>
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);
