<?php
/*Plugin Name: Nirvana*/

function nirvana_install() {
    global $wpdb;
    $dynamic_sidebars = $wpdb->prefix . "dynamic_sidebars";

    $sql = $wpdb->prepare( "CREATE TABLE %s (
            dynamic_sidebar_id BIGINT(20) NOT NULL AUTO_INCREMENT ,
            sidebar_name  VARCHAR(255) NOT NULL ,
            sidebar_id  VARCHAR(255) NOT NULL ,
            description  MEDIUMTEXT NULL ,
            before_widget  MEDIUMTEXT NULL ,
            after_widget  MEDIUMTEXT NULL ,
            before_title  MEDIUMTEXT NULL ,
            after_title  MEDIUMTEXT NULL ,
            PRIMARY KEY  dynamic_sidebar_id (dynamic_sidebar_id),
    );", $dynamic_sidebars);

    require_once(ABSPATH . 'wp-admin/includes/upgrade.php');
    dbDelta($sql);
}
register_activation_hook( __FILE__, 'nirvana_install' );
?>