<p>What does ::Base part mean in Person &lt; ActiveRecord::Base class declaration?
I'm new to ruby and from what I've gathered so far, Person &lt; ActiveRecord should be used.
Thank you.</p>

in Ruby,
```
::
```
accesses static class or module constants.
```
ActiveRecord::Base
```
indicates that the
```
ActiveRecord
```
class or module has a static inner class called
```
Base
```
that you're extending.
Edit:
as Mike points out, in this case
```
ActiveRecord
```
is a module...