diff --git a/sys/db/db_pdo.php b/sys/db/db_pdo.php
index bb4fc64..027ce04 100644
--- a/sys/db/db_pdo.php
+++ b/sys/db/db_pdo.php
@@ -219,6 +219,13 @@ abstract class DB_PDO extends PDO {
 	 */
 	abstract public function get_views();
 
+	/**
+	 * Return list of sequences for the current database, if they exist
+	 *
+	 * @return array
+	 */
+	abstract public function get_sequences();
+
 	/**
 	 * Empty the passed table
 	 *
diff --git a/sys/db/drivers/firebird.php b/sys/db/drivers/firebird.php
index e1ada08..3070a1a 100644
--- a/sys/db/drivers/firebird.php
+++ b/sys/db/drivers/firebird.php
@@ -164,6 +164,19 @@ SQL;
 
 	// --------------------------------------------------------------------------
 
+	/**
+	 * Get list of sequences for the current database
+	 *
+	 * @return array
+	 */
+	public function get_sequences()
+	{
+		// @todo Implement
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------------
+
 	/**
 	 * Not applicable to firebird
 	 *
@@ -519,7 +532,8 @@ class Firebird_Result {
 	 */
 	public function rowCount($statement="")
 	{
-		return fbird_affected_rows();
+		$statement = $statement OR $this->statement;
+		return fbird_affected_rows($statement);
 	}
 
 	// --------------------------------------------------------------------------
diff --git a/sys/db/drivers/mysql.php b/sys/db/drivers/mysql.php
index bead5e4..4cc5925 100644
--- a/sys/db/drivers/mysql.php
+++ b/sys/db/drivers/mysql.php
@@ -88,6 +88,18 @@ class MySQL extends DB_PDO {
 
 	// --------------------------------------------------------------------------
 
+	/**
+	 * Not applicable to MySQL
+	 *
+	 * @return FALSE
+	 */
+	public function get_sequences()
+	{
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------------
+
 	/**
 	 * Returns system tables for the current database
 	 *
diff --git a/sys/db/drivers/odbc.php b/sys/db/drivers/odbc.php
index 674ac8f..a4a9087 100644
--- a/sys/db/drivers/odbc.php
+++ b/sys/db/drivers/odbc.php
@@ -68,6 +68,18 @@ class ODBC extends DB_PDO {
 
 	// --------------------------------------------------------------------------
 
+	/**
+	 * Not applicable to ODBC
+	 *
+	 * @return FALSE
+	 */
+	public function get_sequences()
+	{
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------------
+
 	/**
 	 * List system tables for the current database/connection
 	 *
diff --git a/sys/db/drivers/pgsql.php b/sys/db/drivers/pgsql.php
index 52e60e9..fc0d0e7 100644
--- a/sys/db/drivers/pgsql.php
+++ b/sys/db/drivers/pgsql.php
@@ -152,7 +152,9 @@ SQL;
 	{
 		$sql = <<<SQL
 		 	SELECT "viewname" FROM "pg_views"
-			WHERE "viewname" NOT LIKE 'pg\_%';
+			WHERE "schemaname" NOT IN
+				('pg_catalog', 'information_schema')
+			AND "viewname" !~ '^pg_'
 SQL;
 
 		$res = $this->query($sql);
@@ -163,6 +165,25 @@ SQL;
 
 	// --------------------------------------------------------------------------
 
+	/**
+	 * Get a list of sequences for the current db
+	 *
+	 * @return array
+	 */
+	public function get_sequences()
+	{
+		$sql = <<<SQL
+			SELECT "c"."relname"
+			FROM "pg_class" "c"
+			WHERE "c"."relkind" = 'S';
+SQL;
+
+		$res = $this->query($sql);
+		return db_filter($res->fetchAll(PDO::FETCH_ASSOC), 'relname');
+	}
+
+	// --------------------------------------------------------------------------
+
 	/**
 	 * Return the number of rows returned for a SELECT query
 	 *
diff --git a/sys/db/drivers/sqlite.php b/sys/db/drivers/sqlite.php
index 11931c1..7c6d3c4 100644
--- a/sys/db/drivers/sqlite.php
+++ b/sys/db/drivers/sqlite.php
@@ -107,6 +107,18 @@ SQL;
 
 	// --------------------------------------------------------------------------
 
+	/**
+	 * Not applicable to SQlite
+	 *
+	 * @return FALSE
+	 */
+	public function get_sequences()
+	{
+		return FALSE;
+	}
+
+	// --------------------------------------------------------------------------
+
 	/**
 	 * List system tables for the current database
 	 *