Answer Posted / Vashu Rajput

Creating an Entity-Relationship (E-R) diagram for an online aptitude test system requires defining various entities, attributes, and relationships between them. Here's a simple example of such a diagram:
1. TestTaker (UserID, Name, Email, Password, Address)
2. Test (TestID, Name, Description, DifficultyLevel, StartTime, EndTime)
3. Question (QuestionID, TestID, SequenceNo, QuestionText, AnswerA, AnswerB, AnswerC, CorrectAnswer)
4. Result (ResultID, UserID, TestID, Score, Date)
5. Relationships:
a) A user can take multiple tests (TestTaker --many-- Takes_Tests --> Test).
b) A test has multiple questions (Test --one-- Contains_Questions --> Question).
c) A user submits one result for each test they take (TestTaker --one-- Submits_Result --> Result, Test --one-- Has_Result --> Result).

Define escape() function?

977

Program to return the address family of a socket

1446

How to setting a cookie with the contents of a textbox?

1069

How do you know if a set of points is a function?

1004

Write a main method that prompts the user to enter the starting population, birth and death rates, and the number of years. The input birth and death rates cannot be negative, the starting population cannot be less than 2, and the number of years greater than 0. If the user enters an invalid value, this program will prompt user to re-enter the value until a valid value has been read. When all input values are valid, call on the methods above to compute estimated population and print result.

2372

Is it possible to do 301 redirects in javascript ?

942

How to convert a string to a number using javascript?

1149

how to get no of items from from weblist?

1964