Which of the following filenames is acceptable on both Windows and Mac<br> operating systems?

Computer software licensed under exclusive legal right of the copyright holder with the intent that the licensee is given the ri

Shkiper50 [21]

Answer:

The following statement is 'True'.

Explanation:

There is a software named 'Proprietary software' and also called 'closed-source software', it's non-free software and used to describe the software that is not freely licensed such as operating system, file formats, and system programs. this software is licensed for studying, sharing, modification, redistribution and reverse engineering and has the copyright to use the software under only certain conditions and we can also say that it bears limit against these types of uses.

6 0

3 years ago

An access control system that grants users only those rights necessary for them to perform their work is operating on which secu

solmaris [256]

Answer:

B. Least privilege

Explanation:

The principle of least privilege an important principle in computer security.
It limits the access rights for users and only grant them with the rights that are sufficient for them to perform their required task.
For example a user is granted privilege to execute a file or manipulate data or use only the resources that are required for them to perform a particular task.
This principle can be used only to limit and control access rights to system resources and applications.
The least privilege is beneficial as it reduces the risk of unauthorized access.
For example a user whose task is data entry and has nothing to do with controlling access or granting access rights to users, will only be allowed to enter data to the DB by the principle of least privilege.

7 0

3 years ago

[1] Please find all the candidate keys and the primary key (or composite primary key) Candidate Key: _______________________ Pri

AVprozaik [17]

Answer:

Check the explanation

Explanation:

1. The atomic attributes can't be a primary key because the values in the respective attributes should be unique.

So, the size of the primary key should be more than one.

In order to find the candidate key, let the functional dependencies be obtained.

The functional dependencies are :

Emp_ID -> Name, DeptID, Marketing, Salary

Name -> Emp_ID

DeptID -> Emp_ID

Marketing -> Emp_ID

Course_ID -> Course Name

Course_Name -> Course_ID

Date_Completed -> Course_Name

Closure of attribute { Emp_ID, Date_Completed } is { Emp_ID, Date_Completed , Name, DeptID, Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { Name , Date_Completed } is { Name, Date_Completed , Emp_ID , DeptID, Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { DeptID, Date_Completed } is { DeptID, Date_Completed , Emp_ID,, Name, , Marketing, Salary, Course_Name, Course_ID}

Closure of attribute { Marketing, Date_Completed } is { Marketing, Date_Completed , Emp_ID,, Name, DeptID , Salary, Course_Name, Course_ID}.

So, the candidate keys are :

{ Emp_ID, Date_Completed }

{ Name , Date_Completed }

{ DeptID, Date_Completed }

{ Marketing, Date_Completed }

Only one candidate key can be a primary key.

So, the primary key chosen be { Emp_ID, Date_Completed }..

2.

The functional dependencies are :

Emp_ID -> Name, DeptID, Marketing, Salary

Name -> Emp_ID

DeptID -> Emp_ID

Marketing -> Emp_ID

Course_ID -> Course Name

Course_Name -> Course_ID

Date_Completed -> Course_Name

3.

For a relation to be in 2NF, there should be no partial dependencies in the set of functional dependencies.

The first F.D. is

Emp_ID -> Name, DeptID, Marketing, Salary

Here, Emp_ID -> Salary ( decomposition rule ). So, a prime key determining a non-prime key is a partial dependency.

So, a separate table should be made for Emp_ID -> Salary.

The tables are R1(Emp_ID, Name, DeptID, Marketing, Course_ID, Course_Name, Date_Completed)

and R2( Emp_ID , Salary)

The following dependencies violate partial dependency as a prime attribute -> prime attribute :

Name -> Emp_ID

DeptID -> Emp_ID

Marketing -> Emp_ID

The following dependencies violate partial dependency as a non-prime attribute -> non-prime attribute :

Course_ID -> Course Name

Course_Name -> Course_ID

So, no separate tables should be made.

The functional dependency Date_Completed -> Course_Name has a partial dependency as a prime attribute determines a non-prime attribute.

So, a separate table is made.

The final relational schemas that follows 2NF are :

R1(Emp_ID, Name, DeptID, Marketing, Course_ID, Course_Name, Date_Completed)

R2( Emp_ID , Salary)

R3 (Date_Completed, Course_Name, Course_ID)

For a relation to be in 3NF, the functional dependencies should not have any transitive dependencies.

The functional dependencies in R1(Emp_ID, Name, DeptID, Marketing, Date_Completed) is :

Emp_ID -> Name, DeptID, Marketing

This violates the transitive property. So, no table is created.

The functional dependencies in R2 ( Emp_ID , Salary) is :

Emp_ID -> Salary

The functional dependencies in R3 (Date_Completed, Course_Name, Course_ID) are :

Date_Completed -> Course_Name

Course_Name -> Course_ID

Here there is a transitive dependency as a non- prime attribute ( Course_Name ) is determining a non-attribute ( Course_ID ).

So, a separate table is made with the concerned attributes.

The relational schemas which support 3NF re :

R1(Emp_ID, Name, DeptID, Course_ID, Marketing, Date_Completed) with candidate key as Emp_ID.

R2 ( Emp_ID , Salary) with candidate key Emp_ID.

R3 (Date_Completed, Course_Name ) with candidate key Date_Completed.

R4 ( Course_Name, Course_ID ). with candidate keys Course_Name and Course_ID.

6 0

3 years ago

Which of the descriptions listed below best describes the step in the reverse engineering process called functional analysis? A)

Zepler [3.9K]

If multiple choice then d and a if not then the best one would be a!

hope this helps!!

5 0

3 years ago

What are three consequences of a negative digital Trail

Vladimir79 [104]

Answer:

The digital footprint that is had behind can have repercussions in every aspect of your adolescent's life, conceivably bringing about botched occupation chances, public sharing of individual data, destroyed connections

Explanation:

Digital trail what's left behind as you calmly peruse the web, post via web-based media or even sort into a visit administration. Regardless of whether you're mindful, you add to your advanced impression or profile every day when you sign onto the Internet. The sites you visit, the news posts you remark on, the remarks you leave via web-based media stages—every one of these things meet up to make a representation of your online life.

The digital footprint that is had behind can have repercussions in every aspect of your adolescent's life, conceivably bringing about botched occupation chances, public sharing of individual data, destroyed connections — or, in what is likely more pertinent to them at this moment: Their folks discovering what they've been up to and along these lines being rebuffed.

8 0

3 years ago

Which of the following filenames is acceptable on both Windows and Mac operating systems?