DAO	general purpose data access object meant to handle all communcations with the database through DataAccess and DataResult objects
Variables
da	DataAccess object
Functions
__construct	creates a connection to the database
close	closes database connection and unsets DataAccess object
retrieve	runs database select query and returns DataResult object
update	runs database insert/update/dete/ query and returns DataResult object

protected $da

DataAccess object

public function __construct( $connStr )

creates a connection to the database

connStr

database connection string

public function close()

closes database connection and unsets DataAccess object

public function retrieve( $sql )

runs database select query and returns DataResult object

sql	sql string

DataResult object

public function update( $sql )

runs database insert/update/dete/ query and returns DataResult object

sql	sql string