The correct answer is C) ease of use.
The fact that a web app is written to be run within any of the standard browser and on any platform on which that browser operates is called "ease of use."
The ease of use concept indicates that the product is "amicable" or "friendly" to use by most people because it is not required andy technical knowledge to operate the product. In this case, the app is written to be run within any of the standard browser and on any platform on which that browser operates, so it is "friendly" to operate bu most systems. App's companies and software companies created this "ease of use" concept for many of their products so they can sell most of them because people know they are easy to use and functional.
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Answer:
a. select * from R, S where R.C = S.C (+); (R left outer join S)
Explanation:
In SQL, left outer join of two tables R and S joined on a common column C means that all rows of R are included in the result including those rows for which value of R.C is null. On the contrary, right outer join of two tables R and S joined on a common column C means that all rows of S are included in the result including those rows for which value of S.C is null. As per the question our requirement is the former. So option a is correct.
Answer:
the answer is option E ....................a and c
i.e credit card receipt & Place Order button in an application
Explanation:
Reason is because the Text box, credit card receipt and button would be classes and text box to enter credit card number would also be an object of Text box class place order button would be an object of button class.
Answer:
B. string -> (int -> int)
Explanation:
We are going to perform comparison operations '->'. It is important to notice that the comparison operation gives us a bool value (True or False) and the comparison operation is legal if and only if the data types to be compared are the same.
Example:
int(4)->int(5) False
int(4)->int(4) True
int(4)->string(4) Error, data types don't match
For this reason:
- A. Is legal because float -> float evaluates to True, True is a boolean value and bool -> bool is legal because both are the same data type.
- B. Is illegal because int -> int evaluates to True, True is a boolean value and string is not a boolean (string -> bool).
- C. Is legal because int is the same type than int.
- D. Is legal because the list is the same type than list regardless it's content.
Note:
The operations inside parentheses are evaluated first.
List is a type by itself regardless of its content.
