Answer:
Connection-oriented is the method which is implemented in the transport and data link layer. It is basically depend upon the physical connection in the network system.
Transmission control protocol (TCP) is the connection oriented and user datagram protocol (UDP) is the connection less network transport layer. The TCP and UDP both are operate in the internet protocol (IP).
It basically require connection and it can be establish before sending data. This is also known as reliable network connection service. The connection oriented service establish connection between the different connection terminal before sending any data or information. It can easily handle traffic efficiently.
Answer:
<script type="text/javascript" src="weather.js"></script>
Explanation:
we have to use above script tag to include weather.js file into our web page.
Here type attribute represents the type of the file which we are trying to include on the web page.src attribute represents the path of the file from where we want to include that into our web page.
Generally we can include our java script functions into web page in 2 ways. one is inline function we can write the code in web page <script> tag itself .another way is to write the code in a separate file as shown above and include it in the webpage
Answer:
a) We know that atleast one or more author writes a book.
Symbol to indicate one or more is (B)
So the correct option is B
b) We know that zero to multiple books are written by any author.
Symbol to indicate zero or more is (A)
So the correct option is A
c) The fourth option is correct if we replace by many to many relationship and generate a new entity.
So the relationship betweem author and contract is one to many. So we know that there is atleast one author that represent in symbol d and books has atleast 0 that represent in symbol c.
So Fourth Option is correct d at blue side and c at red side.
d) There are two forirgn keys in table Contract one is from AuthorId and other is ISBN.
So correcct option is C
