What are the recommended relationships to define between tables in Laravel/Eloquent for efficient data retrieval?

When defining relationships between tables in Laravel/Eloquent, it is recommended to use Eloquent's built-in relationships such as `belongsTo`, `hasOne`, `hasMany`, `belongsToMany` to establish connections between models. By defining these relationships, you can efficiently retrieve related data without having to write complex SQL queries manually. This not only simplifies your code but also improves performance by utilizing Eloquent's query optimization capabilities.

// Example of defining relationships between tables in Laravel/Eloquent

// User model
class User extends Model
{
    public function posts()
    {
        return $this->hasMany(Post::class);
    }
}

// Post model
class Post extends Model
{
    public function user()
    {
        return $this->belongsTo(User::class);
    }
}