'not' for instance is a unary operator. It is unary in the sense that it operates on a single item. In contrast a binary operator such as addition operates on two items.

There is no unary plus in C, but if there were, it would have only one operand, unlike the binary plus which has two:

x = a + b; /* binary plus */

x = + b; /* unary plus -- not in C*/

x = a - b; /* unary plus */

x = - b; /* unary minus */

different rdbms operations are delete,update easily and other u find on some other site. •Insert : unary operation •Delete : unary operation •Update : unary operation •Select : unary operation •Project : unary operation •Join : binary operation •Union : binary operation •Intersection : binary operation •Difference : binary operation

No. The subtraction operator is a binary operator that returns the result of subtracting the rhs operand from the lhs operand. The unary minus operator simply negates the rhs operand.

int x = -5; // unary minus. x is (-5)

int y = -x; // unary minus. y is (+5)

y -= x; // binary minus/assign operator. y is (+10)

--x; // unary decrement operator. x is (-6)

y -= (-x); // binary minus/assign and unary minus operators. y is(+4)

In programming a unary and binary operator defines how many components make up an expression.