<span>One emerging type of Trojan horse is called a remote-access Trojan (RAT).
</span> RAT is a malware program. With this Trojan horse an intruder is given administrative control over a target computer. The RAT controls the system via a remote network connection as if by physical access. It is typically installed<span> invisibly with a user-requested program.</span>
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The letter “E” in Dell logo is slightly turned towards D. It represents that the company founder Michael Dell's wish to “turn the world on its ear.” Others believe that the slanted 'E' represents a floppy disk.
Explanation:
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Answer:
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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.
ASCI is the standard that is commonly used on the Internet to represent non-numeric data. ASCI stands for American Standard Code fro Information Interchange. This character encoding standard represents text in computers, telecommunications equipment, and other devices. It assigns letters, numbers, and other characters within the 256 slots available in the 8-bit code
