Object Data Blocks is a high performance, high productivity object persistence environment for .Net developers. It is a commercially supported open source product hosted at Codeplex.

Object Data Blocks supports an agile development process, supporting constant refactoring of the data abstration layer. Both table and query objects can be refactored, reused and subclassed to enable higher productivity and a more natural development style when in creating data driven applications. Changes can be deployed to a database via the deployment tool or through .net code - without any data loss. Some knowledge of relational databases is an advantage but not essential.

For corporate environments, comparisons can be run between assemblies and underlying database schemas to provide deployment scripts in SQL to meet any Database Administrator's requirements

Version 4.1 addresses any issues found since the release of version 4.0 and adds the following functionality

• Connector improvements. The routing algorithm has been enhanced and the connector should take less bends. The Jump property now instructs a connector to draw a "bridge" over other connectors below it in the zorder.
• Interactive Mode improvements. The event model and the information available when adding elements interactively at runtime has been greatly enhanced following feedback from developers.
• Nested Table Groups. Table Groups can now be added to other table groups to create multiple levels of table rows in a Table.
• Element rotation. Shapes now have support for a Rotation property and Rotate method. The shape is drawn rotated around it's center and all child elements including text are drawn rotated at any angle.
• Animation. An Animation and Animate class have been added to allow you to create animations for you diagram elements which can then be saved along with other properties of the diagram. See the Animation and Animator classes for more details
• Ruler guides. The Ruler class now provides better feedback in relation to the user interaction with the diagram in the form of semi transparent highlights on the ruler.
• Miscellaneous. Models can now be zoomed in/out using the CTRL+PageUp and CTRL+PageDown shortcuts.