..code-block::bash

This command line tool asks Doctrine to introspect the database and generate

the XML metadata files under the ``src/Acme/BlogBundle/Resources/config/doctrine/metadata/orm``

the XML metadata files under the ``src/Acme/BlogBundle/Resources/config/doctrine``

folder of your bundle.

..tip::

It's also possible to generate metadata class in YAML format by changing the

first argument to `yml`.

The generated ``BlogPost.dcm.xml`` metadata file looks as follows:

The generated ``BlogPost.orm.xml`` metadata file looks as follows:

..code-block::xml

Then you should insert proper namespace in ``name`` attribute of ``entity`` element like this:

..code-block::xml

..note::

If you have ``oneToMany`` relationships between your entities,

you will need to edit the generated ``xml`` or ``yml`` files to add

a section on the specific entities for ``oneToMany`` defining the

``inversedBy`` and the ``mappedBy`` pieces.

Once the metadata files are generated, you can ask Doctrine to import the

schema and build related entity classes by executing the following two commands.

Once the metadata files are generated, you can ask Doctrine to build related entity classes by executing the following two commands.

..code-block::bash

The first command generates entity classes with an annotations mapping, but

you can of course change the ``annotation`` argument to ``xml`` or ``yml``.

The first command generates entity classes with an annotations mapping. But if you want to use yml or xml mapping instead of annotations, you should execute the second command only.

The newly created ``BlogComment`` entity class looks as follow:

..code-block::php