diff -urpN drupal/includes/common.inc drupal-6.x-dev-drupal_drop_record-0.3/includes/common.inc
--- drupal/includes/common.inc	2007-10-12 22:10:17.000000000 +0800
+++ drupal-6.x-dev-drupal_drop_record-0.3/includes/common.inc	2007-10-17 00:12:07.000000000 +0800
@@ -3093,7 +3093,7 @@ function drupal_schema_fields_sql($table
  *   The object to write. This is a reference, as defaults according to
  *   the schema may be filled in on the object, as well as ID on the serial
  *   type(s). Both array an object types may be passed.
- * @param update
+ * @param primary_keys
  *   If this is an update, specify the primary keys' field names. It is the
  *   caller's responsibility to know if a record for this object already
  *   exists in the database. If there is only 1 key, you may pass a simple string.
@@ -3102,38 +3102,31 @@ function drupal_schema_fields_sql($table
  *   fields defined by the $table. For example, $object->nid will be populated
  *   after inserting a new node.
  */
-function drupal_write_record($table, &$object, $update = array()) {
-  // Standardize $update to an array.
-  if (is_string($update)) {
-    $update = array($update);
-  }
+function drupal_write_record($table, &$object, $primary_keys = array()) {
+  // Standardize $primary_keys to an array.
+  $primary_keys = (is_array($primary_keys)) ? $primary_keys : array($primary_keys);
 
   // Convert to an object if needed.
-  if (is_array($object)) {
-    $object = (object) $object;
-    $array = TRUE;
-  }
-  else {
-    $array = FALSE;
-  }
+  $object = ($array = is_array($object)) ? (object) $object : $object;
 
   $schema = drupal_get_schema($table);
   if (empty($schema)) {
     return FALSE;
   }
 
-  $fields = $defs = $values = $serials = array();
-
+  $fields = array();
+  $values = array();
+  $serials = array();
   // Go through our schema, build SQL, and when inserting, fill in defaults for
   // fields that are not set.
   foreach ($schema['fields'] as $field => $info) {
     // Special case -- skip serial types if we are updating.
-    if ($info['type'] == 'serial' && count($update)) {
+    if ($info['type'] == 'serial' && count($primary_keys)) {
       continue;
     }
 
     // For inserts, populate defaults from Schema if not already provided
-    if (!isset($object->$field)  && !count($update) && isset($info['default'])) {
+    if (!isset($object->$field) && !count($primary_keys) && isset($info['default'])) {
       $object->$field = $info['default'];
     }
 
@@ -3160,7 +3153,7 @@ function drupal_write_record($table, &$o
 
   // Build the SQL.
   $query = '';
-  if (!count($update)) {
+  if (!count($primary_keys)) {
     $query = "INSERT INTO {". $table ."} (" . implode(', ', $fields) . ') VALUES (' . implode(', ', $placeholders) . ')';
     $return = SAVED_NEW;
   }
@@ -3173,7 +3166,7 @@ function drupal_write_record($table, &$o
       $query .= $field . ' = ' . $placeholders[$id];
     }
 
-    foreach ($update as $key){
+    foreach ($primary_keys as $key){
       $conditions[] = "$key = ". db_type_placeholder($schema['fields'][$key]['type']);
       $values[] = $object->$key;
     }
@@ -3191,14 +3184,49 @@ function drupal_write_record($table, &$o
   }
 
   // If we began with an array, convert back so we don't surprise the caller.
-  if ($array) {
-    $object = (array)$object;
-  }
+  $object = ($array) ? (array) $object : $object;
 
   return $return;
 }
 
 /**
+ * Drop a record from the database based upon the schema.
+ *
+ * @param $table
+ *   The name of the table; this must exist in schema API.
+ * @param $object
+ *   The object to drop. This is a reference, as defaults according to
+ *   the schema may be filled in on the object, as well as ID on the serial
+ *   type(s). Both array an object types may be passed.
+ * @param primary_keys
+ *   Specify the primary keys' field names. If there is only 1 key, you may
+ *   pass a simple string.
+ * @return (boolean) Failure to write a record will return FALSE. Otherwise,
+ *   TRUE is returned.
+ */
+function drupal_drop_record($table, $object, $primary_keys = array()) {
+  // Standardize $primary_keys to an array.
+  $primary_keys = (is_array($primary_keys)) ? $primary_keys : array($primary_keys);
+
+  // Convert to an object if needed.
+  $object = (is_array($object)) ? (object) $object : $object;
+
+  $schema = drupal_get_schema($table);
+  if (empty($schema)) {
+    return FALSE;
+  }
+
+  // Execute the request.
+  foreach ($primary_keys as $key){
+    $conditions[] = "$key = ". db_type_placeholder($schema['fields'][$key]['type']);
+    $args[] = $object->$key;
+  }
+  $query = "DELETE FROM {". $table ."} WHERE ". implode(' AND ', $conditions);
+  db_query($query, $args);
+  return SAVED_DELETED;
+}
+
+/**
  * @} End of "ingroup schemaapi".
  */
 
diff -urpN drupal/modules/node/node.module drupal-6.x-dev-drupal_drop_record-0.3/modules/node/node.module
--- drupal/modules/node/node.module	2007-10-12 22:10:18.000000000 +0800
+++ drupal-6.x-dev-drupal_drop_record-0.3/modules/node/node.module	2007-10-16 23:43:43.000000000 +0800
@@ -845,8 +845,8 @@ function node_delete($nid) {
   $node = node_load($nid);
 
   if (node_access('delete', $node)) {
-    db_query('DELETE FROM {node} WHERE nid = %d', $node->nid);
-    db_query('DELETE FROM {node_revisions} WHERE nid = %d', $node->nid);
+    drupal_drop_record('{node}', $node, 'nid');
+    drupal_drop_record('{node_revisions}', $node, 'nid');
 
     // Call the node-specific callback (if any):
     node_invoke($node, 'delete');