note 100718 deleted from intro.pdo by danbrown

Note Submitter: Erwin Moller ---- [in reply to Peng Zhang and others that wonder about the difference between 'data-access abstraction' and 'database abstraction'] data-access abstraction layer: This will only abstract the interaction with your data (Update, insert, delete, select) Full blown database abstraction: This will offer a lot more, for example table creation, abstraction of certain types of data. For example: If a database doesn't have a SERIAL (autonumber) datatype, a database abstraction layer will emulate this for you. You can use a database abstraction layer to create your tables, AND access to the data. For those interested: A well known (free) database abstraction layer for PHP is ADODB and can be found here: http://www.phplens.com/adodb/ ADODB is dual licenced: BSD-Style and LGPL