DBA$-221$Indicate whether the statement is true or false.

$1.$ Parameter Modes in the stored program language can be defined as IN$,$ OUT, or INOUT.

$2.$ Without an ELSE clause, the CASE statement will raise an exception if none of the conditions are met.

$3.$ Single line comments begin with $//$ or #$.$

$4.$ A database stored program, sometimes called a stored module or a stored routine, is a computer program that is stored within, and executes within, the database server.

$5.$ Variables declared within a block are not accessible in the outer block.

$6.$ The default mode for parameters in a stored procedure is OUT.

$7.$ A trigger will only be invoked in response to a DDL operation $($CREATE$,$ ALTER, DROP$)$ against a database table.

$8.$ Most stored programs involve some kind of interaction with database tables.

$9.$ The sequence that variables, cursors, and handlers are defined within a block is unimportant.

$10.$ The stored program language does not offer a full range of control and conditional statements that control which lines of the program actually run under a given set of circumstances.

$11.$ The stored program language supports the C$-$Style unary operators for increment $(++),$ decrement$(--),$ and compound assignments $(+=,-=,*=.=.\%=).$

$12.$ User variables can be accessed by other user sessions.

$13.$ An unbounded SELECT statement, one not associated with an INTO clause or a cursor, returns its result to the calling program.

$14.$ The CONCAT$($string$1,$string$2,$string$3,..])$ function returns a string comprised of all the supplied strings joined together.

$15.$ You must explicitly specifiy the IN Mode in stored functions.

$16.$ Changes made to an overloaded variable in an inner block are visible outside the block.