Add plugin in WP with DB

<?php
/*
  Plugin Name: Samrat Test
  Plugin URI: http://samratparida.blogspot.in/
  Description: This plugin provides custom login and managing people and private profiles
  Version: 1.0
  Author: Samrat
  Author URI: http://samratparida.blogspot.in/
 */
 global $jal_db_version;
$jal_db_version = '1.0';
function jal_install() {
 global $wpdb;
 global $jal_db_version;
 $table_name = $wpdb->prefix . 'Samrat';

 $charset_collate = $wpdb->get_charset_collate();
 $sql = "CREATE TABLE $table_name (
  id mediumint(9) NOT NULL AUTO_INCREMENT,
  time datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
  name tinytext NOT NULL,
  text text NOT NULL,
  url varchar(55) DEFAULT '' NOT NULL,
  UNIQUE KEY id (id)
 ) $charset_collate;";
 require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
 dbDelta( $sql );
 add_option( 'jal_db_version', $jal_db_version );
}
function jal_install_data() {
 global $wpdb;

 $welcome_name = 'Mr. WordPress';
 $welcome_text = 'Congratulations, you just completed the installation!';

 $table_name = $wpdb->prefix . 'Samrat';

 $wpdb->insert(
  $table_name,
  array(
   'time' => current_time( 'mysql' ),
   'name' => $welcome_name,
   'text' => $welcome_text,
  )
 );
}

register_activation_hook( __FILE__, 'jal_install' );
register_activation_hook( __FILE__, 'jal_install_data' );
//Add extra data on title

 ?>