manually deleting a node from the different databases

We are having one master site which works like, if node is added in master site it will be added in different sub-sites too. Want to do the same for deleting a node and have an issue that master site node gets deleted before sub-site node.

I am having an issue in deleting a node of the sub-site from the database i.e database1 while node is deleted from the master database i.e database0.

if ((($op=="delete")) && ($node->type=="page")) {
   
   
 // if(is_array($node->field_checkbox_value)){
      foreach($node->field_checkbox_value as $cbs) {
         if($cbs['value'] > 0) {
           if ($cbs==1) {
            $db='co1';
           }
           if($cbs['value']==2)
           {
            $db='co2';
           }
           if($cbs['value']==3)
           {
            $db='co3';
           }
           
   $node->nid;
            $tempnid=$node->nid;
            //print $tempnid;

         $coid = db_fetch_object(db_query("SELECT field_corporate_news_id_value FROM content_type_page where nid=$tempnid"));
         $coid = $coid->field_corporate_news_id_value;
         print $coid;
           
           
           $k = db_set_active($db);
           if (db_is_active()) {
         

            //db_insert('node');
           $cnid = db_fetch_object(db_query("SELECT nid,field_corporate_news_id_value FROM content_type_page where content_type_page.field_corporate_news_id_value=$coid "));
           $cnid = $cnid->nid;
           print $cnid;
           
           db_query("DELETE FROM node WHERE nid =$cnid ");
           
         
           db_query("DELETE FROM node_revisions WHERE nid=$cnid");
           
           db_query("DELETE FROM url_alias WHERE src='node/$cnid' ");
           
           db_query("DELETE FROM content_type_page WHERE nid=$cnid ");
           
           

            
            
            $x = db_set_active('default');
            
            
           }
         }
      }
   //}
  }