Answer:
b. foreign key
Explanation:
In the database world, a foreign key is a field on one table and a primary key for another table. The purpose of a foreign key is to provide linkages between two or more tables. Given two tables A and B, and making A the point of reference, a primary key is a field that is unique in A while a foreign key is unique in B.
On another hand, a composite primary key is a combination of two or more fields/columns on database table that can be used to uniquely identify each row in the table.
In the database lingua, what we have is a unique key not a distinct key, though the two words are similar in meaning.
A duplicate key is used when an information may be repeatedly entered on a table.
So the correct option is a foreign key.
Answer:
B
Explanation:
Computer security, cybersecurity or information technology security (IT security) is the protection of computer systems and networks from information disclosure, theft of or damage to their hardware, software, or electronic data, as well as from the disruption or misdirection of the services they provide.[1]
Answer: A) remove()
Explanation:
The remove() function removes an existing file from the server but it does not affect the existing directory and file. We can also ease and remove files in the file handling by using the remove() function. And it is built-in function that removes any type of the data from the function by taking values in the parameter whose values are equal with the passing value in the parameter.
Just decrease the font size and the size of the like will decrease.
Decrease font size by pressing on the part were it says 29 and typing in a smaller number like 14 for example
