Open Source Persistence Frameworks in Groovy

This project provides utilities for groovy to access db4o databases. It includes a builder and db4o aware extensions of the groovy shell. The builder takes over opening and closing of the database, executing queries. Custom code is injected using closures.

GORM is Grails' object relational mapping (ORM) implementation. Under the hood it uses Hibernate 3 (an extremely popular and flexible open source ORM solution) but because of the dynamic nature of Groovy, the fact that it supports both static and dynamic typing, and the convention of Grails there is less configuration involved in creating Grails domain classes.

Groovy supports a few neat ways to work with SQL more easily and to make SQL more Groovy. You can perform queries and SQL statements, passing in variables easily with proper handling of statements, connections and exception handling thanks to closures.

ORMLite is simple and small object-relational mapping tool f for groovy