Question: I currently have the following code in my program:

```
struct mystruct
{
    int x;
    struct y *list[10];
}

mystruct *h1=(mystruct *)malloc(sizeof(mystruct));

```

I want to declare the array `list` dynamically (using `malloc()`) when I declare the structure. Could anyone tell me how to go about this?

Answer: 
When you create a new bundle, just use

```
app/console doctrine:schema:update

```

Since your schema exists already.
Suppose you have a Bundle that uses a MySQL database that is inside a folder in the src directory, for example : 

```
src/Folder/BundleFolder/

```

And another Bundle that uses a Postgresql database that is in your src directory, let's say :

```
src/OtherBundle

```

To map doctrine to a certain entity managers use this conf in your app/config/config.yml file :

```
orm:
    #auto_mapping: true 
    #default_entity_manager: default
    entity_managers:
        default:
            connection: mysql
            mappings:
                FolderBundleFolder : ~
        other:
            connection: pgsql
            mappings:
                OtherBundle : ~

```

Then as user3580495 said, use the command :

```
php app/console doctrine:schema:create --em=other --dump-sql

```

to see what is going to happen on the postgresql database.

```
php app/console doctrine:schema:update --em=default --dump-sql

```

will show you the SQL commands that are going to be executed on the MySQL database.

In the conf file file, don't forget the comment like this :

```
#auto_mapping: true 
#default_entity_manager: default

```

That also means that when you use that doctrine update command, you will have to precise your entity manager each time, which gives you more control over what you do on the overall.

Don't forget that the --help parameter is always your friend for symfony commands and also you will find a lot of info in the docs : 

**<http://symfony.com/doc/current/cookbook/doctrine/multiple_entity_managers.html>**