Wednesday, December 12

Using PL/Java in Greenplum

In this article we are going to show you how to write PL/Java functions in Greenplum. I assume that you have a working Greenplum (or Greenplum Community Edition) at your disposal. In this example we will use version **4.0.4**, installed in /usr/local/greenplum-db- (which is the default location). (more…)

Association rules with MADlib in Greenplum

Data Mining, Greenplum
[*MADlib*]( is an open-source library for scalable in-database analytics which targets the PostgreSQL and the Greenplum databases. MADlib version 0.2beta needs to be installed properly to follow this article, so we encourage you to read the [official documentation]( to install it in a Greenplum database. I'm going to show you how to perform Association Rules using MADlib and Greenplum. (more…)

Soon! 4-Days Admin Training in German

International News
Because of PostgreSQL Conference Europe I had to reschedule the German trainings.The next upcoming training will be the 4-Days Administration, Performance, Streaming Replication Training.There are still a few seats left.Schedule: 2011 October 7 - 10Location: BielefeldCome to the nice East-Westphalia town and join our training.Register now!Detailed informations in German you will find in our flyer: free to contact us and ask for more details:[email protected] (more…)

How to test Greenplum Community Edition on VirtualBox

Greenplum Community Edition is available in different flavours, including a VMWare virtual machine based on CentOS with all the fancy tools and the documentation already installed. This allows you to easily try and evaluate this powerful platform for data warehousing. [Greg Smith from our 2ndQuadrant team, recently explained how to install this image on Linux]( This article will guide you through the installation of this image - specifically prepared for VMWare - on VirtualBox, by giving those users the opportunity to easily test and evaluate Greenplum on VirtualBox. (more…)

Planetary alignment

Greg's PlanetPostgreSQL, PostgreSQL
Picking back up this week's theme of where you can publicize your PostgreSQL related project at, you're probably reading this blog entry because it appeared on the Planet PostgreSQL blog aggregator. There are "Planet" feeds around many open-source projects. The Debian and GNOME ones spawned off the Planet software, which now powers a ton of other blogs such as the the well regarded Planet Python. Occasionally you'll find general open-source database news posted both here and on Planet MySQL. And I used to read Planet CentOS back when I used to care if they'd ever release CentOS 6. Planet PostgreSQL has been around since about seven years ago, when Devrim Gündüz first made the service available on one of his servers. Like many good open-source projects, it has some history (more…)

Performing parallel ETL with Greenplum’s gpfdist and external tables

One of the coolest features that Greenplum offers to Data warehousing and Business Intelligence operators as far as ETL is concerned, is the combination of read only external tables with gpfdist, Greenplum's parallel file distribution server. The typical use case for this solution is parallel data loading of text files (coming from etherogeneous sources - databases or applications) into a Greenplum data warehouse. For those of you who want to know more about Greenplum, I suggest that you visit the Greenplum website, download the Community Edition, install it and start testing it. (more…)