//Creating Table for anncoument if not exists
function install_global_announcement()
'CREATE TABLE IF NOT EXISTS '.tbl("global_announcement").' (
`announcement` text NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8;;'
//inserting new announcment
$db->Execute("INSERT INTO ".tbl('global_announcement')." (announcement) VALUES ('')");
//This will first check if plugin is installed or not, if not this function will install the plugin details
install_global_announcement();