http://devel-m6w6.rhcloud.com/mdref/pq/Connection/%3A%20Asynchronous%20Usage
* Extended type support by pg_type:
http:/devel-m6w6.rhcloud.com/mdref/pq/Types/%3A%20Overview
* Fetching simple multi-dimensional array maps:
http:/devel-m6w6.rhcloud.com/mdref/pq/Result/map
* Working Gateway implementation:
http://devel-m6w6.rhcloud.com/mdref/pq/Connection/%3A%20Asynchronous%20Usage
* Extended type support by pg_type:
http:/devel-m6w6.rhcloud.com/mdref/pq/Types/%3A%20Overview
* Fetching simple multi-dimensional array maps:
http:/devel-m6w6.rhcloud.com/mdref/pq/Result/map
* Working Gateway implementation: