# Looking for a PDF document with relation of ActiveRecord

**URL:** <https://www.ruby-forum.com/t/looking-for-a-pdf-document-with-relation-of-activerecord/105815>\
**Category:** Rails\
**Created:** [June 3, 2007, 9:18am UTC](https://www.ruby-forum.com/t/looking-for-a-pdf-document-with-relation-of-activerecord/105815 "2007-06-03T09:18:23Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![StSSSSphane\_Wirtel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@StSSSSphane\_Wirtel](https://www.ruby-forum.com/u/StSSSSphane_Wirtel)\
**Post date:** [June 3, 2007, 9:18am UTC](https://www.ruby-forum.com/t/looking-for-a-pdf-document-with-relation-of-activerecord/105815/1 "2007-06-03T09:18:23Z")

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Hi all,

There was some months, I found on this mailing list a PDF document,  
explaining the database relations (belong\_to, has\_many, … ) in  
ActiveRecord with pictures. Any idea, where can I find this document ?

Thanks,

Stephane

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**Author:** ![StSSSSphane\_Wirtel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@StSSSSphane\_Wirtel](https://www.ruby-forum.com/u/StSSSSphane_Wirtel)\
**Post date:** [June 5, 2007, 3:05pm UTC](https://www.ruby-forum.com/t/looking-for-a-pdf-document-with-relation-of-activerecord/105815/2 "2007-06-05T15:05:06Z")

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Perhaps you are thinking of this:

> **[activerecord\_cheatsheet.pdf](https://slash7.com/cheats/activerecord_cheatsheet.pdf)**
>
> 51.59 KB

–  
Benjamin C.  
[http://www.bencurtis.com/](http://www.bencurtis.com/) – blog  
[http://agilewebdevelopment.com/rails-ecommerce](http://agilewebdevelopment.com/rails-ecommerce) – build e-commerce  
sites with Rails

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**Author:** ![StSSSSphane\_Wirtel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@StSSSSphane\_Wirtel](https://www.ruby-forum.com/u/StSSSSphane_Wirtel)\
**Post date:** [June 5, 2007, 5:48pm UTC](https://www.ruby-forum.com/t/looking-for-a-pdf-document-with-relation-of-activerecord/105815/3 "2007-06-05T17:48:54Z")

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> > On Jun 3, 2007, at 12:17 AM, Stéphane Wirtel wrote:
> > 
> > Hi all,
> > 
> > There was some months, I found on this mailing list a PDF document,  
> > explaining the database relations (belong\_to, has\_many, … ) in  
> > ActiveRecord with pictures. Any idea, where can I find this document ?

> On Tue, 5 Jun 2007, Benjamin C. wrote:
> 
> Perhaps you are thinking of this:  
> [http://slash7.com/cheats/activerecord\_cheatsheet.pdf](http://slash7.com/cheats/activerecord_cheatsheet.pdf)

Or this…

[http://mboffin.com/stuff/ruby-on-rails-data-relationships.png](http://mboffin.com/stuff/ruby-on-rails-data-relationships.png)

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**Author:** ![StSSSSphane\_Wirtel](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/9fc348/32.png) [@StSSSSphane\_Wirtel](https://www.ruby-forum.com/u/StSSSSphane_Wirtel)\
**Post date:** [June 6, 2007, 6:48am UTC](https://www.ruby-forum.com/t/looking-for-a-pdf-document-with-relation-of-activerecord/105815/4 "2007-06-06T06:48:02Z")

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Thanks, it’s the second file (png) and not a PDF.

Thanks

[http://mboffin.com/stuff/ruby-on-rails-data-relationships.png](http://mboffin.com/stuff/ruby-on-rails-data-relationships.png)