Bibliografia

Documentación de PHP: https://www.php.net/docs.php

 

PEAR :: The PHP Extension and Application Repository: https://pear.php.net/

Pear::DB Database Abstraction Layer: https://pear.php.net/package/DB

DBC Technology: https://java.sun.com/products/jdbc/

MySQL Connector/J: https://dev.mysql.com/downloads/connector/j

PostgreSQL JDBC Driver: https://jdbc.postgresql.org/