The PostgreSQL extension for CLIPS Expert System provides access to a PostgreSQL database from the CLIPS environment by exposing a number of CLIPS functions. CLIPS users who are familiar with SQL should not have much difficulty in learning how to use the additional functions to interact with the database from the CLIPS environment.
PHPG is a PostgreSQL database interface class that was specifically designed to confront and resolve the majority of the long-standing issues with PHP's native PostgreSQL driver. Much of the underlying functionality utilizes PHP's native PostgreSQL driver to maintain performance and reliability. Its features include automatic detection and transformation of most PostgreSQL data-types to native PHP data structures, including integers, floats, booleans, NULLs, arrays, Hstores, and geometrical types, transaction-style database cursors with commit and rollback functionality, superglobal database connections that retrieve existing database connections from any scope.
markov.sql implements third order (and lower) model Markov Chains, including training and generation, in pure SQL(ite). The source code archive also contains a pre-trained SQL dump with models based on the 1990 US Census Bureau data sets for first and last names, and an excerpt of the 2012 US tax office corporation names.