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
Answer:
Look in your recently deleted album and if it is not there try checking your iCloud, if its not there then it's sadly probably gone forever.
Explanation:
Answer:
they can be removed safely if they're immersed in water first.
Explanation:
When sending an echo request message, a router will use the IP address of the exit interface as the source IP address.
<h3>What is traceroute IP address?</h3>
Traceroute, also called tracepath or tracert, is a network tool used to determine the “path” packets take from one IP address to another.
It provides the hostname, IP address, and the response time to a ping. Enter the IP address that you want to lookup.
Traceroute ensures each hop on the way to a destination device drops a packet and sends back an ICMP error message.
This means traceroute can measure the duration of time between when the data is sent and when the ICMP message is received back for each hop—giving you the RTT value for each hop.
To learn more about IP address, refer
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