1



.

:

()

:

RollBackTransaction

:

­.

:

*

. ­ , , ­ , ­ .

()

= (".");

= ("");

.();

.() = 0

(" !");

;

;

= 1;

();

= 1 .()

= .();

() = 0

;

;

=0;

() > 0

= + 1;

= (, "-");

> 0

> 3

1 = (, 2, -3);

// , .

//

1 = "";

;

=(, + 1);

//

= (, 2);

= (, """");

1 = (, 1, -1);

= "";

;

= 1

= 1;

= 2

= 1;

= 3

= 1;

;

;

.(());

.();

.() > 0

((, "45") + " - ="

+ (, "45") + " " + );

._ = ();

.();

(" !");

= 0;

(" " + ");

(" !");

;

;

(" "++" .");

;

= 1

();

();

;