Answer:
1) Yes, Publisher relation should have a publisherID primary key.
2) NOT NULL and UNIQUE for the BookID, BranchID, CardNumber and name of the borrower in the Book, Book_Copies, Library_branch, and Borrower relations respectively. The DueDate field of the book_loan relation must be a time constraint. The BookID of the Book relation must be serial number for automatic addition and update of bookid across the database.
Explanation:
The Publisher relation should have primary key publisherID which should replace the publisherName in the Book relation to easily make a join query and attain a third-level database model.
Answer:
I would propose Comodo Firewall to my schoolmate. It is very easy to understand and have an appealing graphical UI. It gives the most significant level of security from dangers. It checks all the traffic going to the framework and leaving the framework. It quickly cautions you when there is any sort of suspicious action. There are no mind boggling design issues. It learns the conduct of the client to convey customized protection. It gives you the usefulness of Spyware filtering and infection checking in a single tick. There are a lot more functionalities that the firewall gives to its clients.
Explanation:
Choose a firewall that is currently on the market and write a technical "sales pitch" to your classmates on why they should choose the firewall you are selling.
I would propose Comodo Firewall to my schoolmate. It is very easy to understand and have an appealing graphical UI. It gives the most significant level of security from dangers. It checks all the traffic going to the framework and leaving the framework. It quickly cautions you when there is any sort of suspicious action. There are no mind boggling design issues. It learns the conduct of the client to convey customized protection. It gives you the usefulness of Spyware filtering and infection checking in a single tick. There are a lot more functionalities that the firewall gives to its clients.
Because there fun and helps boys get together or to get ur mind off of stuff
Answer:
class Foo:
def F(self, n):
if n == 1:
return 1
return self.F(n - 1) + 3 * n - 2
Explanation:
This should cover part a to this question. The thing I'm not sure on is they use the term "method" which in python technically means a class function...but then list one argument with the function call which makes me think it is possibly just supposed to be a regular function. Which would be the following snippet. It would depend on if you are using classes or not yet in your coding class.
def F(n):
if n == 1:
return 1
return F(n - 1) + 3 * n - 2
Play around with it and look into python "lists" and "for loops" for part c. Part b I'm not sure what kind of example they want since I'm not in that class. Good luck!
