Question
A cyclist starts chasing a biker who is 1,200 metres ahead.
The cyclist rides at 24 m/s, and the biker is going at 16 m/s. Find the time taken by the cyclist to catch up.Solution
ATQ,
Relative speed of the cyclist = 24 – 16 = 8 m/s
Required time = 1200 / 8 = 150 seconds
Which of the following is used to eliminate redundancy and anomalies in a database?
Which command is used to remove all records from a table without deleting the table structure?
The result of a Cartesian product of two relations R and S will have:
Which OOP principle allows a single interface to represent different underlying forms or data types?
Which of the following is true about a view in SQL?
A primary key in a table:
Which SQL keyword is used to sort the result set?
The concept of "data hiding" is primarily achieved through which OOP principle?
Which of the following is a valid constraint in SQL?
Which of the following statements about abstract classes is true?
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