Which of the following is not part of new controls added to WPF in .NET 4.0?

can we prevent overriding

C# has multiple inheritance

web page inherits which class

which is for data retieval

which is not a constraint in sql

SELECT ROUND(TRUNC(MOD(1600,10),-1),2) FROM dual;

select CEILING(-10.4)

select ROUND(1234.1962, 2)

select stuff('abcdef',3,2,'YZ')

select str('123.45',8,4)

select RTRIM('fasdfsadf ')

What is the Result of the Following two Queries SELECT CEIL(-123.50) FROM DUAL; SELECT CEIL(123.50) FROM DUAL;