Answer and Explanation:
a) Key for the relation courses is HS.
b) FD's are already minimal basis, as no attributes can be removed from the left side, right side is having only single attributes and none of the FD can be removed as given in the question.
c) By using the 3NF synthesis algorithm, the final set of relations obtained will be CT, HRC, HTR, HSR, CSG (FD'S are already proved to be minimal basis in part (b)). All the relations are in BCNF.
The correct answer that would best complete the given statement above would be the term addWindowListener. <span>The method needed to arrange for an object to be notified when a window's close-window button has been clicked is addWindowListener. Hope this is the answer that you are looking for. </span>
Answer:
Instead of using a key or entering a code to open a door, a user can use an object, such as an ID badge, to identify themselves in order to gain access to a secure area. What term describes this type of object?
Explanation:
The <u>subject </u>line for any e-mail messages you write should clearly state the intention of the e-mail.
Electronic mail (e-mail) is a method of digital communications in which messages are exchanged through the internet. The messages are sent from a sender to one or more receivers. Depending on user’s perspective, every user uses e-mail differently. Communicating via e-mail requires e-mail platforms such as G*mail, Ya*hoo! Mail, Hot*mail, and Out*look etc. In the every e-mail, there is a subject line that clearly state the intention of the e-mail.
Subject line is an important element of an e-mail. Through the subject line, the message written in the e-mail is briefly summarized in six to eight words. A clearly written subject line provides the recipient a clear understanding that why the email has been sent. When recipient replies back to the e-mail, the subject line is changed accordingly.
This is the subject line of the e-mail that convince the receiver whether to open and read the e-mail. So, it should be written in the way that gives clear intention of the e-mail. We can say that the subject line of the e-mail is the most significant few words in the whole e-mail to convey the main purpose of the e-mail.
You can learn more about subject line at
brainly.com/question/14572730
#SPJ4
