I used these tools/scripts to get the job done:
- MySQL Workbench
I use the Data Modeling part of MySQL Workbench to design my database. - zf-doctrine-integrator script
Janoliver wrote an excellent script which downloads the needed frameworks and generates the needed classes to integrate Doctrine2 into the Zend Framework.
The script is available at Google Code. - mysql-workbench-schema-exporter script
Since I didn't want to code all the needed Doctrine2 annotations into the models myself, I used johmue's mysql-workbench-schema-exporter script to generate the needed models from my Workbench project file.
The source of the script is available on GitHub.
Using above scripts, I ended up with a flexible and fast solution to combine the Doctrine2 ORM Framework into the Zend Framework.