Which object oriented concept is related to the derivation of a class based on another class?

Which of the following statements is NOT true about the UNIQUE constraint of SQL Server 2008?

Which of the following define the rules for .NET Languages?

Suppose there is a List of type Person with a property of LastName(string) and PopulateList is a function which returns a Generic List of type Person: List people = PopulateList(); What does the statement below do? people.Sort((x, y) => string.Compare(x.LastName, y.LastName));

Which of the following will correctly remove duplicates from a List?

Is it possible to define custom Exception classes in C#?

The XML web services of the .NET framework are built on:

Which of the following statements is true for a DataSet?

Which of the following is capable of returning multiple rows and multiple columns from the database?

In the sample code given below, which of the data members are accessible from class Y? class X { private int i; protected float f;public char c;}class Y : X { }

What is an Object in Object Oriented Programming?