Are you using NHibernate as your object-relational mapper? If so, did you know that WebORB provides an easy integration between Flex clients and NHibernate models? Enterprise Architect Joseph Magley demonstrates how to use WebORB with NHibernate and Flex in a recent technical article he wrote for the Adobe Developer Connection. Here is an excerpt from this article:

“In this tutorial I demonstrate a particularly easy-to-use combination of technologies that do a very good job at allowing you to focus on developing your features rather than maintaining plumbing. Modern development tools coupled with WebORB for .NET and NHibernate make it easier to maintain integration points. Development frameworks for data access such a NHibernate eliminate much of the glue code that developers often need to write and maintain. This decreases complexity and creates a solid environment for rapid development of RIAs.”

The complete article with sample code can be viewed here: http://www.adobe.com/devnet/flex/articles/flex-nhibernate.html