Database Administration Questions

Because a table can have only one primary key

Class can have a public method for specific data type conversions.
for example:
class B
{
double value;
public  B(int i )
operator double()
{
return value;
}
};
B BObject;
double i = BObject; // assigning object to variable i of type double.
now conversion operator gets called to assign the value.

We know, 

S.I = PTR/100 where P = principal amount, T = time, R = rate of interest

Here in the given data,

Interest for two years S.I = 924 - 812 = Rs. 112

Now, Principal amount P = 812 - 112 = Rs. 700 

Now,

R = S.I x 100/PT

R = 112 x 100/700 x 2

R = 11200/1400

R = 8%

Hence, the rate of interest R = 8%.

In latest generation computers, the instructions are executed both sequencially and parallelly.

Venus is the only planet that rotates in clockwise where all other planets in the solar system rotates in anti - clockwise direction.

The SQL DROP TABLE statement is used to remove a table definition and all data, indexes,...

Component Testing is also called as Module or Unit or Program testing. It is testing of all the components in an application separately.