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SQLAlchemy

By Reuven Lerner 

Although it sometimes might seem as if relational databases have gone the way of the dinosaur, making way for non-relational (NoSQL) databases, such as MongoDB and Cassandra, a very large number of systems still depend on a relational database. more>>

Database Integrity and Web Applications

By Reuven M. Lerner 

Want to improve the integrity of your data? Place constraints in the database, as well as in your application. more>>

The Past, Present and Future of GIS: PostGIS 2.0 Is Here!

By Stefano Iacovella 

Extend PostgreSQL's capabilities with PostGIS 2.0 and discover all the magic of spatial databases. more>>

Database

Moving Databases

By Shawn Powers 

I recently moved my personal website from GoDaddy to my home server. I have a business connection at my house, and my site gets little enough traffic that hosting at home on my static IP makes sense. Moving the files wasn't really difficult, I FTP'd them down from the old server, and SFTP'd them up to the new server. Moving the database was a bit more challenging, however. more>>

<h3> Processing </h3>

REDCap: A Tool for Collecting Clinical Trials Data

By Doug.Roberts 

In the course of my day job I tend to get drawn into interesting niche projects because of my Linux expertise. Recall that the Mothership (that corporate entity located somewhere on the East coat which pays me fairly well to work for them) is *shudder* a Windows shop, primarily. more>>

PostgreSQL 9.0 Released

By Mitch Frazier 

PostgreSQL version 9.0 was released yesterday (Sept 20th). The 9.0 version of PostgreSQL includes a number of important new features, more new features in fact than any previous release. more>>

Quick and Dirty with Open Office Base.

By Mike Diehl 

Even with all of the high quality software available, sometimes you just have to break down and write a custom application, and usually you don't have a lot of time to devote to it. This is the situation I found myself in when my wife started a new business and needed a simple means of tracking sales leads. more>>

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How to Build an Optimal Hadoop Cluster to Store and Maintain Unlimited Amounts of Data Using Microservers

Realizing the promise of Apache® Hadoop® requires the effective deployment of compute, memory, storage and networking to achieve optimal results. With its flexibility and multitude of options, it is easy to over or under provision the server infrastructure, resulting in poor performance and high TCO. Join us for an in depth, technical discussion with industry experts from leading Hadoop and server companies who will provide insights into the key considerations for designing and deploying an optimal Hadoop cluster.

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Red Hat White Paper: Using an Open Source Framework to Catch the Bad Guy

Built-in forensics, incident response, and security with Red Hat Enterprise Linux 6

Every security policy provides guidance and requirements for ensuring adequate protection of information and data, as well as high-level technical and administrative security requirements for a system in a given environment. Traditionally, providing security for a system focuses on the confidentiality of the information on it. However, protecting the data integrity and system and data availability is just as important. For example, when processing United States intelligence information, there are three attributes that require protection: confidentiality, integrity, and availability.

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