These components have been heavily influenced by Aura PHP and Atlas PHP
The Data Mapper pattern as described by Martin Fowler in Patterns of Enterprise Application Architecture is:
A layer of Mappers that moves data between objects and a database while keeping them independent of each other and the mapper itself.
Phalcon\DataMapper namespace contains components to help with accessing your data source, with the [Data Mapper][pattern].
One of the components required by this implementation is a PDO connector. The Phalcon\DataMapper\Pdo\Connection offers a wrapper to PHP’s PDO implementation, making it easier to maintain connections.
Connecting to a source
Connection - Decorated