diff --git a/sys/db/db_pdo.php b/sys/db/db_pdo.php
index 73eca4f..39eeee8 100644
--- a/sys/db/db_pdo.php
+++ b/sys/db/db_pdo.php
@@ -134,9 +134,6 @@ abstract class DB_PDO extends PDO {
 			$this->statement = $statement;
 		}
 
-		// Execute the query
-		//$this->statement->execute();
-
 		// Return number of rows affected
 		return $this->statement->rowCount();
 	}
@@ -210,74 +207,125 @@ abstract class DB_PDO extends PDO {
 	 * Method to simplify retreiving db results for meta-data queries
 	 *
 	 * @param string $sql
-	 * @param string $filtered_index
+	 * @param bool $filtered_index
+	 * @return mixed
 	 */
-	protected function driver_query($sql, $filtered_index="")
+	protected function driver_query($sql, $filtered_index=TRUE)
 	{
-		$res = $this->query($sql);
-		$all = $res->fetchAll(PDO::FETCH_ASSOC);
-
-		if ( ! empty($filtered_index))
+		if ($sql === FALSE)
 		{
-			return db_filter($all, $filtered_index);
+			return FALSE;
 		}
-
-		return $all;
+	
+		$res = $this->query($sql);
+		
+		$flag = ($filtered_index) ? PDO::FETCH_NUM : PDO::FETCH_ASSOC;
+		$all = $res->fetchAll($flag);
+		
+		return ($filtered_index) ? db_filter($all, 0) : $all;
 	}
-
-
+	
 	// -------------------------------------------------------------------------
-	// ! Abstract public functions to override in child classes
-	// -------------------------------------------------------------------------
-
+	
 	/**
 	 * Return list of tables for the current database
 	 *
 	 * @return array
 	 */
-	abstract public function get_tables();
+	public function get_tables()
+	{
+		return $this->driver_query($this->sql->table_list());
+	}
+	
+	// -------------------------------------------------------------------------
 
 	/**
 	 * Return list of dbs for the current connection, if possible
 	 *
 	 * @return array
 	 */
-	abstract public function get_dbs();
+	public function get_dbs()
+	{
+		return $this->driver_query($this->sql->db_list());
+	}
+	
+	// -------------------------------------------------------------------------
 
 	/**
 	 * Return list of views for the current database
 	 *
 	 * @return array
 	 */
-	abstract public function get_views();
+	public function get_views()
+	{
+		return $this->driver_query($this->sql->view_list());
+	}
+	
+	// -------------------------------------------------------------------------
 
 	/**
 	 * Return list of sequences for the current database, if they exist
 	 *
 	 * @return array
 	 */
-	abstract public function get_sequences();
+	public function get_sequences()
+	{
+		return $this->driver_query($this->sql->sequence_list());
+	}
+	
+	// -------------------------------------------------------------------------
 
 	/**
 	 * Return list of function for the current database
 	 *
 	 * @return array
 	 */
-	abstract public function get_functions();
+	public function get_functions()
+	{
+		return $this->driver_query($this->sql->function_list(), FALSE);
+	}
+	
+	// -------------------------------------------------------------------------
 
 	/**
 	 * Return list of stored procedures for the current database
 	 *
 	 * @return array
 	 */
-	abstract public function get_procedures();
+	public function get_procedures()
+	{
+		return $this->driver_query($this->sql->procedure_list(), FALSE);
+	}
+	
+	// -------------------------------------------------------------------------
 
 	/**
 	 * Return list of triggers for the current database
 	 *
 	 * @return array
 	 */
-	abstract public function get_triggers();
+	public function get_triggers()
+	{
+		return $this->driver_query($this->sql->trigger_list(), FALSE);
+	}
+	
+	// -------------------------------------------------------------------------
+	
+	/**
+	 * Retreives an array of non-user-created tables for
+	 * the connection/database
+	 *
+	 * @return array
+	 */
+	public function get_system_tables()
+	{
+		return $this->driver_query($this->sql->system_table_list());
+	}
+
+
+	// -------------------------------------------------------------------------
+	// ! Abstract public functions to override in child classes
+	// -------------------------------------------------------------------------
 
 	/**
 	 * Empty the passed table
@@ -295,14 +343,6 @@ abstract class DB_PDO extends PDO {
 	 */
 	abstract public function num_rows();
 
-	/**
-	 * Retreives an array of non-user-created tables for
-	 * the connection/database
-	 *
-	 * @return array
-	 */
-	abstract public function get_system_tables();
-
 	/**
 	 * Connect to a different database
 	 *
diff --git a/sys/db/db_sql.php b/sys/db/db_sql.php
index 106404b..43d95cf 100644
--- a/sys/db/db_sql.php
+++ b/sys/db/db_sql.php
@@ -60,6 +60,7 @@ abstract class DB_SQL {
 	/**
 	 * Return an SQL file with the database table structure
 	 *
+	 * @abstract
 	 * @return string
 	 */
 	abstract public function backup_structure();
@@ -67,6 +68,7 @@ abstract class DB_SQL {
 	/**
 	 * Return an SQL file with the database data as insert statements
 	 *
+	 * @abstract
 	 * @return string
 	 */
 	abstract public function backup_data();
diff --git a/sys/db/drivers/firebird/firebird_driver.php b/sys/db/drivers/firebird/firebird_driver.php
index b6f5e56..7a61546 100644
--- a/sys/db/drivers/firebird/firebird_driver.php
+++ b/sys/db/drivers/firebird/firebird_driver.php
@@ -128,166 +128,6 @@ class firebird extends DB_PDO {
 
 	// --------------------------------------------------------------------------
 
-	/**
-	 * List tables for the current database
-	 *
-	 * @return array
-	 */
-	public function get_tables()
-	{
-		$sql = <<<SQL
-			SELECT "RDB\$RELATION_NAME" FROM "RDB\$RELATIONS"
-			WHERE "RDB\$RELATION_NAME" NOT LIKE 'RDB$%'
-			AND "RDB\$RELATION_NAME" NOT LIKE 'MON$%'
-			AND "RDB\$VIEW_BLR" IS NOT NULL
-			ORDER BY "RDB\$RELATION_NAME" ASC
-SQL;
-
-		$this->statement = $this->query($sql);
-
-		$tables = array();
-
-		while($row = $this->statement->fetch(PDO::FETCH_ASSOC))
-		{
-			$tables[] = $row['RDB$RELATION_NAME'];
-		}
-
-		return $tables;
-	}
-
-	// --------------------------------------------------------------------------
-
-	/**
-	 * Get list of views for the current database
-	 *
-	 * @return array
-	 */
-	public function get_views()
-	{
-		$sql = <<<SQL
-			SELECT "RDB\$RELATION_NAME"
-			FROM "RDB\$RELATIONS"
-			WHERE "RDB\$VIEW_BLR" IS NOT NULL
-			AND ("RDB\$SYSTEM_FLAG" IS NULL OR "RDB\$SYSTEM_FLAG" = 0)
-SQL;
-		$res = $this->query($sql);
-
-		return db_filter($res->fetchAll(PDO::FETCH_ASSOC), 'RDB$RELATION_NAME');
-	}
-
-	// --------------------------------------------------------------------------
-
-	/**
-	 * Get list of sequences for the current database
-	 *
-	 * @return array
-	 */
-	public function get_sequences()
-	{
-		$sql = <<<SQL
-			SELECT "RDB\$GENERATOR_NAME"
-			FROM "RDB\$GENERATORS"
-			WHERE "RDB\$SYSTEM_FLAG" = 0
-SQL;
-		$res = $this->query($sql);
-
-		return db_filter($res->fetchAll(PDO::FETCH_ASSOC), 'RDB$GENERATOR_NAME');
-	}
-
-	// --------------------------------------------------------------------------
-
-	/**
-	 * Return list of custom functions for the current database
-	 *
-	 * @return array
-	 */
-	public function get_functions()
-	{
-		$sql = <<<SQL
-			SELECT * FROM "RDB\$TRIGGERS"
-			WHERE "RDB\$SYSTEM_FLAG" = 0
-SQL;
-		$res = $this->query($sql);
-
-		return $res->fetchAll(PDO::FETCH_ASSOC);
-	}
-
-	// --------------------------------------------------------------------------
-
-	/**
-	 * Retrun list of stored procedures for the current database
-	 *
-	 * @return array
-	 */
-	public function get_procedures()
-	{
-		$sql = 'SELECT * FROM "RDB$PROCEDURES"';
-
-		$res = $this->query($sql);
-
-		return $res->fetchAll(PDO::FETCH_ASSOC);
-	}
-
-	// --------------------------------------------------------------------------
-
-	/**
-	 * Return list of triggers for the current database
-	 *
-	 * @return array
-	 */
-	public function get_triggers()
-	{
-		$sql = <<<SQL
-			SELECT * FROM "RDB\$FUNCTIONS"
-			WHERE "RDB\$SYSTEM_FLAG" = 0
-SQL;
-		$res = $this->query($sql);
-
-		return $res->fetchAll(PDO::FETCH_ASSOC);
-	}
-
-	// --------------------------------------------------------------------------
-
-
-	/**
-	 * Not applicable to firebird
-	 *
-	 * @return FALSE
-	 */
-	public function get_dbs()
-	{
-		return FALSE;
-	}
-
-	// --------------------------------------------------------------------------
-
-	/**
-	 * List system tables for the current database
-	 *
-	 * @return array
-	 */
-	public function get_system_tables()
-	{
-		$sql = <<<SQL
-			SELECT "RDB\$RELATION_NAME" FROM "RDB\$RELATIONS"
-			WHERE "RDB\$RELATION_NAME" LIKE 'RDB$%'
-			OR "RDB\$RELATION_NAME" LIKE 'MON$%';
-SQL;
-
-		$this->statement = $this->query($sql);
-
-		$tables = array();
-
-		while($row = $this->statement->fetch(PDO::FETCH_ASSOC))
-		{
-			$tables[] = $row['RDB$RELATION_NAME'];
-		}
-
-		return $tables;
-	}
-
-	// --------------------------------------------------------------------------
-
 	/**
 	 * Return the number of rows returned for a SELECT query
 	 *
diff --git a/sys/db/drivers/firebird/firebird_sql.php b/sys/db/drivers/firebird/firebird_sql.php
index e7502b6..bea8a03 100644
--- a/sys/db/drivers/firebird/firebird_sql.php
+++ b/sys/db/drivers/firebird/firebird_sql.php
@@ -209,5 +209,126 @@ class Firebird_SQL extends DB_SQL {
 
 		return $output_sql;
 	}
+	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Returns sql to list other databases
+	 *
+	 * @return FALSE
+	 */
+	public function db_list()
+	{
+		return FALSE;
+	}
+	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Returns sql to list tables
+	 *
+	 * @return string
+	 */
+	public function table_list()
+	{
+		return <<<SQL
+			SELECT "RDB\$RELATION_NAME" FROM "RDB\$RELATIONS"
+			WHERE "RDB\$RELATION_NAME" NOT LIKE 'RDB$%'
+			AND "RDB\$RELATION_NAME" NOT LIKE 'MON$%'
+			AND "RDB\$VIEW_BLR" IS NOT NULL
+			ORDER BY "RDB\$RELATION_NAME" ASC
+SQL;
+	}
+	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Returns sql to list system tables
+	 *
+	 * @return string
+	 */
+	public function system_table_list()
+	{
+		return <<<SQL
+			SELECT "RDB\$RELATION_NAME" FROM "RDB\$RELATIONS"
+			WHERE "RDB\$RELATION_NAME" LIKE 'RDB$%'
+			OR "RDB\$RELATION_NAME" LIKE 'MON$%';
+SQL;
+	}
+	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Returns sql to list views
+	 *
+	 * @return string
+	 */
+	public function view_list()
+	{
+		return <<<SQL
+			SELECT "RDB\$RELATION_NAME"
+			FROM "RDB\$RELATIONS"
+			WHERE "RDB\$VIEW_BLR" IS NOT NULL
+			AND ("RDB\$SYSTEM_FLAG" IS NULL OR "RDB\$SYSTEM_FLAG" = 0)
+SQL;
+	}
+	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Returns sql to list triggers
+	 *
+	 * @return string
+	 */
+	public function trigger_list()
+	{
+		return <<<SQL
+			SELECT * FROM "RDB\$FUNCTIONS"
+			WHERE "RDB\$SYSTEM_FLAG" = 0
+SQL;
+	}
+	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Return sql to list functions
+	 *
+	 * @return string
+	 */
+	public function function_list()
+	{
+		return <<<SQL
+			SELECT * FROM "RDB\$FUNCTIONS"
+			WHERE "RDB\$SYSTEM_FLAG" = 0
+SQL;
+	}
+	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Return sql to list stored procedures
+	 *
+	 * @return string
+	 */
+	public function procedure_list()
+	{
+		return 'SELECT * FROM "RDB$PROCEDURES"';
+	}
+	
+	// --------------------------------------------------------------------------
+	
+	/**
+	 * Return sql to list sequences
+	 *
+	 * @return string
+	 */
+	public function sequence_list()
+	{
+		return <<<SQL
+			SELECT "RDB\$GENERATOR_NAME"
+			FROM "RDB\$GENERATORS"
+			WHERE "RDB\$SYSTEM_FLAG" = 0
+SQL;
+	}
 }
 //End of firebird_sql.php
\ No newline at end of file
diff --git a/tests/test_dbs/FB_TEST_DB.FDB b/tests/test_dbs/FB_TEST_DB.FDB
index 9e66218..bcf4d29 100755
Binary files a/tests/test_dbs/FB_TEST_DB.FDB and b/tests/test_dbs/FB_TEST_DB.FDB differ