Answer:
See explaination
Explanation:
An Academic Database deals with the information pertaining to the records of students of an institute. The various fields which can be associated with a student are Name, Unique Identification Number, Marks in various subjects, Grades, Courses Taken and so on. Most of the fields mentioned above have some or other form of validation that is required for the DB to be consistent and follow the basic properties of a database.
One field where range validation can be used is MARKS. In the marks field, the range of marks will be say 0 to 100 and anything below 0 or above 100 must be reported to the database administrator. Another field where we can apply a range validation is AGE in which the range of age allowed could greater than say 10, if it is a college and maximum age could be say 60. Thus, the range check on the AGE field is 10 to 60.
One field where choice validation can be used is GENDER. In the gender field, there could be multiple choices like Male, Female and Others. Thus, out of the available choices we have to select only the available choice and only one choice must be selected where we can apply choice validation. Another field is COURSE, where we can have a list of courses a student can opt for and out of the available courses can select one.
Thus, there are multiple fields where we can apply various types of validation and it is important to explore the area for which the DB has been created understanding all the scenarios and attributes of the problems that are associated with that area.
User inputs email. User inputs password , if password and username match user allowed through.If not password or email address is incorrect notification is shown - and there also may be a limit on the amount of attempts you have to get it right.
It's B.
As you go up, the air thins out, meaning it is less dense. Since there are less molecules that can transfer heat, the temperature is lower.
Answer:
wikipedia
Explanation:
they have like almost everything.
Answer:
MAN IN THE MIDDLE
Explanation:
Man in the middle attack is an attack where the attacker secretly relays and possibly alters the communications between two parties. When data is sent between a computer and a server, a cybercriminal can get in between and spy or eavesdrop.
A man in the middle attack can positions himself in a conversation between a user and an application in other to impersonate one of the parties, making it appear as if a normal exchange of information is underway.
In a man-in-the-middle cyber-attack, the attacker places themselves in between two devices and monitor packets from the network, modifies them, and inserts them back into the network without the other parties knowing.
