Answer:
ask your teacher ok boy☺️☺️☺️
This is called a key attribute!
There are different types of key attributes!
Primary key is the key that is actually chosen, for example a social security number.
There is also a unique key, say our finger prints! they also uniquely identify humans, but usually we prefer to use social security number when we list people (a unique key could be a primary key if we chose so)
We could also identify people by their social security number and a name, but this is unnecessary, as social security number already gives a full identification. Such a reduntant key is called super key.
Answer:
18
Explanation:
lets go step by step.
the function called tryIt has a value, a variable named "a". this "a" variable will be whatever the user enters when the program says, Enter a number.
ok so if we enter "a" as 2, and b in the function will always be 7, and 2 + 7 equals 9,
and the ans variable (short for answer) will take the result of the function (9) and multiply it by 2,
then the answer is 18
Answer:
Depending on the error message which Alice get but what could have gone wrong is perhaps firewall issue.
Explanation:
There are lots of probable reason why Alice could not access her files during the weekend but below are some common reasons:
Firewall issue: Maybe Alice has her firewall turned on unknowingly as it is known that firewall do block such types of connection except it is explicitly allowed from the firewall settings. Another issue might be that, Alice ISP uses firewall.
FTP programs Setting: Perhaps there is a settings which Alice has not activated in the FTP program that she is using.
That would be what is known as Spyware, a common form of this is known as a "Trojan Horse". This type of malware is typically latched on and hidden within files, such as when downloading a pirated version of a song, game, art-work, etc...
