Fix documentation errors

lib/DBAccessService.php

@@ -29,7 +29,7 @@ class DBAccessService{
 	
 	/**
 	 * Connection object for PDO access
-	 * @var unknown
+	 * @var \PDO
 	 */
 	private $conn;
 	
@@ -88,7 +88,7 @@ class DBAccessService{
 	 * @param string $sqlStatement the SQL statement to run
 	 * @param array $input_parameters bound parameters in the sqlStatement
 	 * 
-	 * @throws Exception if statement could not be executed
+	 * @throws \Exception if statement could not be executed
 	 */
 	public function sql_select($sqlStatement, $input_parameters = null){
 		$sth = $this->conn->prepare($sqlStatement);