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.
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Your answer: Hordes of surreptitiously infiltrated computers, linked and controlled remotely, also known as zombie networks are known as..?
Your answer: Hordes of surreptitiously infiltrated computers, linked and controlled remotely, also known as zombie networks are known as botnets.
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The text just goes out of the slide and you can't see it until you lower the font size or until you delete some of it.
Answer:
use of vacume tubes to make circuit
use of punch cards as I/O devices
use of high electricity
use of magnetic drums
use of machine language and symbols in instuctons
