diff --git a/core/model/Database.php b/core/model/Database.php
index a4ee06694..9bf40e304 100755
--- a/core/model/Database.php
+++ b/core/model/Database.php
@@ -236,8 +236,9 @@ abstract class Database extends Object {
 			$this->checkAndRepairTable($table);
 		}
 
-		$this->requireField($table, "ID", "int(11) not null auto_increment");
-
+		//DB ABSTRACTION: we need to convert this to a db-specific version:
+		$this->requireField($table, 'ID', DB::getConn()->IdColumn());
+		
 		// Create custom fields
 		if($fieldSchema) {
 			foreach($fieldSchema as $fieldName => $fieldSpec) {
diff --git a/core/model/MySQLDatabase.php b/core/model/MySQLDatabase.php
index 756000eb4..912c94b74 100644
--- a/core/model/MySQLDatabase.php
+++ b/core/model/MySQLDatabase.php
@@ -573,6 +573,16 @@ class MySQLDatabase extends Database {
 		return 'varchar(' . $values['precision'] . ') character set utf8 collate utf8_general_ci';
 	}
 	
+	/**
+	 * This returns the column which is the primary key for each table
+	 * In Postgres, it is a SERIAL8, which is the equivalent of an auto_increment
+	 *
+	 * @return string
+	 */
+	function IdColumn(){
+		return 'int(11) not null auto_increment';
+	}
+	
 	/**
 	 * Returns true if the given table is exists in the current database 
 	 * NOTE: Experimental; introduced for db-abstraction and may changed before 2.4 is released.