Develop a java-based tool that manages the life-cycle of the database schema and generates code and documentation artifacts. The tool transforms an XML description of a database schema into an HTML data dictionary, SQL scripts to create the database, and Java data access code. The tool automatically updates the documentation, scripts, and code as the schema is changed and updated. The tool also provides a simple but powerful data access programming model and framework for developing custom data access code. The generated Java code conforms to the Data Access Object (DAO) and Value Object (AKA Data Transfer Object) patterns that are described in the J2EE Java Blueprints.